What shrub flowers smell before a thunderstorm. Plants - predictors of the weather - Moving and life in the village. Information without discussion to help for selection and arrangement - LiveJournal. Methodology for assessing the performance of test Olympiad tasks of theoretical

Not only weather forecasters and living creatures (animals, birds, amphibians, crustaceans, fish, insects), but even plants can predict the weather for the next few hours, days and even weeks.

Scientists claim that more than four hundred species can be counted in the post-Soviet space. various plants capable of predicting the weather. They can be found in a flower bed, in a field, in a garden, in a kitchen garden, near a river or pond, in a park or in a forest. True, in order to determine the weather by their behavior, you should look closely.

Plants make most of their movements in accordance with their natural biological clock, but sometimes they react in the same way to changes in the weather. Some flowers close or change their appearance.

A good predictor of the next bad weather is the common mallow, the flowers of which seem to fade before the rain. Ipomoea also signals the imminent rain, folding its purple flowers into a bundle. But the yellow acacia, Tatar and common honeysuckle before the rain release a huge amount of nectar, attracting various insects. The violet is also a reliable barometer - if its flowers cheerfully look at the world purple eye, then it's to steady sunny weather. And when the violet flower is closed, then bad weather should be expected.

On the lawns and flowerbeds of urban megacities, broad-leaved cannes are often found, which, despite their East Indian origin, bloom in our conditions until the first frost. But few people know that these flowers are also called the “rain tree”, because when transparent droplets of moisture are visible on the wide leaves of cannes in the morning, it will definitely rain in the afternoon.

Mimosa trees can also predict the next bad weather, which fold their leaves before the rain, as if they are afraid to soak them.

From indoor plants a good predictor of the weather is the monstera, which, on the eve of rain, begins to “cry”, releasing droplets of moisture at the ends of its leaves.

On the garden plots or in vegetable gardens you can often find nondescript grass, the leaves of which always seem to be wet to the touch. This plant is called wood lice, and many summer residents are trying in every possible way to get rid of this weed. But a few bushes of wood lice on the site should still be left, because by its small white flowers you can determine whether in the near future or not. If the corollas of woodlice flowers are not opened in the morning, and the flowers themselves drooped, then after some time the first drops should be expected. Since the wood lice blooms from April until the first cold weather, you can use such a weather forecaster all summer.

Even an ordinary potato bends its pedicels down before the rain, so when you arrive at the site, the first thing you need to do is take a closer look at it.

The onset of bad weather also portends the common clover, the leaves of which fall and fold like an umbrella covering the heads of flowers.

Also in cloudy, unpleasant weather and before the rain, the yellow dandelion flowers are tightly closed. Even a faded dandelion can predict the coming weather. In dry sunny weather, its white fluffy parachutes easily scatter in all directions even at the slightest touch or from a light breeze. And before bad weather, the fluffy ball folds up like an umbrella, and no winds and rains are afraid of it.

Rainy weather is also foreshadowed by strawberry flowers, which always droop before bad weather, protecting themselves from precipitation.

In the forest, to determine the nearest weather, an excellent barometer is purple stonecrop (this plant can be found in glades and edges). If in the evening the pink flowers of this plant are closed, then the coming day should be dry and sunny. But when the flowers remain open on the eve of the night, the next morning will be rainy.

In many moist forests you can find such a plant as calla, which can be recognized by its inflorescence in the form of an ear wrapped in a white leaf. In anticipation of rain, this plant bends this leaf covering the inflorescence to the side, and before good weather, the end of the leaf looks up.

Before rainy weather, many plants growing near water bodies also “cry”: chastukha, arrowhead, plakun-grass, burr, telorez.

Also, our ancestors once determined the weather for the next minutes and hours with the help of chistyak and oak anemone, the flowers of which close before bad weather. And it is also worth taking a closer look at the meadow core, the stem with flowers of which always bends down before the rain. This plant seems to feel the arrival of rain in advance and wilts prematurely. Melilot officinalis a few hours before the rain, on the contrary, lifts its leaves up and folds them.

You can also determine the weather forecast for the coming months with the help of trees. So one of the most accurate and "outstanding" long-term forecasts of weather "forecasters" is a beautiful birch. According to folk signs, if a birch tree releases a lot of juice before the leaves bloom, then the summer will be rainy and rainy. If the leaves on the birch appear earlier than the green foliage on the alder, then the summer will be dry and warm. Otherwise, the cold is provided.

On alder, aspen, bird cherry and various types of willows, moisture forms on the leaves before bad weather. Sometimes, even in good weather, this moisture falls from the leaves so abundantly that the ground under the trees becomes wet.

Even beautiful spruces have synoptic abilities. Before rain, they lower heavy branches down, and before clear weather, they raise them back up.

But the biggest "crybaby" among the trees is maple. on this tree, droplets of moisture appear where the leaf cuttings are attached to the branches. Attentive and observant people's weather forecasters say that maple predicts the next rains three to four days before they arrive!

In any case, these signs should not be forgotten even after visiting the most “true” meteorological sites, because meteorologists from all over the world can make mistakes, and barometer plants almost never!

Where do we usually look when we are going for a walk or on business? Correctly! On a thermometer or an Internet site that shows the weather. It turns out that many indoor plants are excellent weather forecasters and can tell whether it will rain or heat is expected. You just need to learn to understand their "language".

So, who are they, green predictors?

MONSTERA DELICIOUS. This spreading liana will tell you unmistakably whether it will be damp outside. If it is expected that the sky will be covered with clouds and it will rain or drizzle, droplets will collect on its leaves.

BANANA ROOM (Muza). Whenever increased air humidity is expected, a dew drop forms on the tip of its young, unopened leaves.

INDOOR ROSE. Before a downpour gathers, her flowers become more fragrant.

MARANTA. All species of this magnificent tropical plant respond to an increase in air humidity by forming moisture on the leaves.

HOYA FEATHER. If droplets gather on her flowers, an unmistakable warning: it will rain. By the way, it tastes like sweet nectar. Whether it is edible is unknown.

BALSAM. If "tears" form on its leaves, this is for sunny, clear weather.

CYPARIS. It starts to smell stronger when it's damp outside.

MIMOSA SHAME. Shows not so much the weather as the time. By evening, its leaves are folded, and by morning they open.

OXIS (oxalis). This representative of the flora with butterfly leaves behaves in the same way as bashful mimosa. It is not only a green (or purple!) clock, but also a phyto-barometer: its petals also fold when rain approaches.

ALOCASIA speaks not only of the weather, but also of poor care. Water forms on its leaves even before rain, and may indicate excessive watering.

THELOCACTUS (telocactus bicolor). On hot days, droplets of liquid form on its modified stem - usually at the base of the spines, at the top.

They say that at home this flower can predict rain: if it “cries” - wait for bad weather ...

Alocasia flowers - rarely grown indoors tropical plant. It comes from the aroid family. There are more than fifty various kinds, differing in plant height, size, shape and color. General feature all varieties - dense shield-shaped large leaves, oval, with a pointed end and clearly visible veins. On the surface of the leaf there are stomata, through which Alokaziya dump excess moisture.

The plant was brought from Malaysia and Ceylon, where it grows wild. How Alocasia is considered one of the most decorative deciduous plants, and well deserved. Its magnificent foliage looks very picturesque in almost any interior, especially near artificial reservoirs of winter gardens. The plant is quite large, reaches a height of 1 m.

Alocasia blooms very rarely, its small ones are collected on the cob, partially wrapped in a leaf, like in a bedspread. If the cob-inflorescence is pollinated, then berries with seeds are formed over time. It is better to remove inflorescences, since during their appearance the growth of magnificent leaves stops, because of which Alocasia flowers, in fact, are grown.

You should know that the whole plant is completely poisonous, the juice irritates the mucous membranes and skin, so the tropical beauty must be kept away from children and animals.

It is simply amazing how unpretentious the overseas flower of Alocasia is. Caring for him, despite his tropical origin, is simple, you just need to provide the conditions to which he is accustomed to. wild nature. It grows quietly in a moist, warm microclimate, spreading its exotic leaves. Periodically, some of them turn yellow and fall off, but new ones immediately grow in their place. Alocasia flowers are very fond of light, however, they need to be shaded from the direct rays of the sun.

Heat and humidity are indispensable conditions for good health for plants, it is advisable not to allow sudden changes temperature. It is convenient to put the pots on a pallet with small wet pebbles to maintain constant humidity. The plant in the summer should be watered abundantly with settled soft water, and make sure that the earth in the pot is always wet. In winter, on the contrary, watering should be moderate and careful so that the roots do not rot.

In the spring and summer, Alocasia flowers need to be fed once every 2-3 weeks CMU for indoor plants. The soil should be easily permeable to moisture and air, with good drainage. Transplantation is done in the spring - for young plants as needed, and for adults - once every two to three years. Pots for plants should be tall.

It should be borne in mind that in dry air, plants can be affected by pests, these are most often aphids, scale insects, and spider mites. If the infestation is small, the leaves and stems can be rubbed with a soapy sponge. If the infestation is severe, you will need to use a suitable insecticide. Keeping in mind the poisonousness of the plant, all work on caring for it must be done with gloves.

Important! The plant is used in folk medicine, but because of its toxicity, it is very dangerous to self-medicate!

Elena Chaus
Abstract of the lesson-conversation "Flowers-forecasters" (using ICT)

Target: introduce children to weather forecast flowers.

The course of the conversation

Educator. Flowers you can not only admire, but also with their help you can determine the weather! So, flowers by which the weather can be determined is called weather forecast flowers. And it's not hard to do, you just have to be careful.

Slide show « Weather forecast flowers» (Teacher's story with elements of conversation)

Slide number 1. Monstera.

Slide number 2. Cannes.

Slide number 3. Daisies.

Slide number 4. Water lilies.

Slide number 5. Pansies.

Slide number 6. Dandelions.

Slide number 7. Calendula.

Slide number 8. Bells.

Slide number 9. Geranium.

Slide number 10. Clover.

Slide number 11. Oxygen.

Slide number 12. Lilies.

Slide number 13. Hyacinths.

Slide number 14. Phloxes.

Slide number 15. Currant.

Slide number 16. Mallow.

Slide number 17. Calendula.

Slide number 18. Mokritsa.

Slide number 19. Coltsfoot.

Slide number 20. Bindweed.

For example, if droplets appear on the tips of monstera or canna leaves, then it will rain soon. Daisies tilt their heads down and close when rain approaches. Before rain, water lilies hermetically close their anthers and go under water. They close their doors before the rain pansy flowers, dandelions, calendula, and bluebells bend and tilt their "gramophones".

Geranium, on the contrary, stretches and straightens the stems. In clover and sour, before bad weather, the leaves change their shape - they fold.

Many flowers before the rain intensely smell. These are lilies, hyacinths, phloxes, red and black currants.

This happens because plants are very sensitive to the slightest changes in the weather, they are able to respond to minor fluctuations in temperature, pressure, and humidity.

You can determine what the weather will be like in the next few hours or the next day by many signs. Let's pay attention to flowers in our yard: the sky is clear, the weather is good, and the mallow and marigolds have already folded their petals tightly and seem to have withered - which means it will rain. After the rain, the petals will open again.

The wood lice, a garden weed, is just as sensitive to weather changes. Her nondescript flowers open early in the morning: if by nine o'clock in the morning they have not opened, it will almost certainly rain.

Plants that predict the weather are found in the meadow and in the forest. So, the clover shrinks, brings its leaves closer and leans - to bad weather. And long before the weather improves, when the sky is still overcast, the leaves straighten.

close up flowers coltsfoot - be rain. Bindweed closes its corolla before the rain, and on the eve sunny day Be sure to reveal it even in cloudy weather.

Finger gymnastics "Scarlet flowers»

Our Reds flowers

Open petals. (spread fingers)

The wind breathes a little

The petals sway. (wiggle fingers)

Our Reds flowers

Close the petals. (Fingers clench into a fist)

shake their heads,

They fall asleep quietly. (Shaking fists)

The fragrant violet hides its violet petals before the rain, as moisture is detrimental to it. Common chicory, meadow core, chickweed, field bindweed, white water lily behave in the same way. Them flowers close before rain and storm.

On the banks of rivers, in other wet places, spring chistyak grows. In clear weather it flower open. But as soon as the sun hides behind the clouds, the bright petals bend towards the middle, covering the stamens.

The oak anemone is considered a real barometer. In clear sunny weather, her white and pink flowers are pleasing to the eye. But if you notice that even in the afternoon, when the sun is shining, its petals begin to fold, then you have to wait for the weather to worsen.

Among the mass of greenery shine brightly "flashlights" celandine. But then they began to fade, became barely noticeable. Plant signals: it will rain soon.

In May-June, the meadows are covered with a yellow carpet of dandelions. This plant also predicts the weather in advance. Imagine that in the morning, passing by a familiar meadow, you do not recognize his: yellow "carpet" almost gone, flowers dandelions shrunk into a tight ball, covered with green wrappers. The sun has already risen, it seems to be warming as before. And the dandelion is in no hurry to open its flower. Secret simple: a storm is approaching.

Dandelion can predict the weather even after will fade when a fluffy ball appears on his slender leg. Tear off such a ball and blow on it. Many fluffs easily break off and rise into the air. It happens in clear good weather. And before the rain, when the humidity of the air rises, the fluffs are not easy to blow off, they seem to be glued.

If the branches of the Christmas tree and juniper, directed upwards in clear and dry weather, begin to fall - expect bad weather.

Some plants warn of an upcoming change in the weather by the release of odorous substances. These include adonis spring, meadow drowse, white and yellow acacia, medicinal sweet clover.

There are also plants that already a few days before the rain begin to "cry"- Discard excess water. So, about three days before the rain starts "cry" maple. Droplets of water appear before the rain on the leaves of reeds, willows. Leaves of blackberry, bird cherry become wet.

Plants that respond to rain (changes in humidity) are called barometer plants.

The main indicators in long-term forecasts are signs of the awakening of wildlife after winter dormancy. So, for example, if a birch is the first to open its leaves in spring, we should expect warm summer, and if the leaves of the alder open before the birch, the summer will be cold and rainy. Friendly and intense (abundant) sap from a birch portends inclement summer weather.

In autumn, along a birch, you can predict the timing of the onset spring: if the leaves begin to turn yellow from the top of the crown - spring will be early, and if from below - late. Abundant harvests of apples, mountain ash, acorns promise a harsh frosty winter.

Onions grown in the garden can be predicted winter weather straight Houses: if the two or three outer dry layers of the bulb skin are thin and easily torn, the weather will be relatively warm, and if the skin is rough and strong, a harsh winter should be expected.

Outcome of the conversation

1. What are weather forecast plants?

2. What forecast plants do you know?

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February 25th, 2011 , 11:55 am

I want to buy a house in the countryside, live in the countryside, move to the countryside for permanent residence
from the city to the countryside choosing a place of residence living in a village, a farm, a village

Maria Komkova

PLANTS - WEATHER FORECASTERS

"People have long noticed that plants are very sensitive to changes external environment and can give Additional information their senses, they can notice what a person cannot feel.

How, then, in ancient times (and even today) were fairly correct long-term weather forecasts made? People, in order to expand the range of their sensations, have made many plants their "meteorologists". In "folk weather science", plants have served people as "oracles" of the weather since time immemorial. After all, plants appeared on planet Earth long before animals. Warmly sun rays, humidity of the earth, movement of the earth's interior, cold ice, touch human hands- all this is felt by plants. They react to many natural phenomena occurring near and far from their leaves, roots, flowers, tendrils, earrings.

Our beautiful birch - a symbol of Russia - occupies an honorable place among plants that "issue" long-term weather forecasts. There are old folk omens that if a birch in the spring, before the foliage blooms, a lot of juice flows - the summer will be rainy, “if in the spring the birch throws out the leaves before the alder, the summer will be windy, and if the alder blooms earlier, the cold and the rains will torment. The leaves of the birch fall cleanly - by the light and fruitful year, if in the fall the birch leaves begin to turn yellow from the top, then the next spring will be early, and if from below, then late.

If there are a lot of nuts and few mushrooms, the winter will be snowy and harsh. The abundance of berries (the so-called berry year) also portends cold winter. Many acorns on oaks - to warm winter. A plentiful harvest of mountain ash "all around is red from mountain ash" - to a harsh fierce winter. Until the leaf from the cherry trees has fallen, no matter how much snow falls, winter will not come. If yellow leaves appear on the trees in summer, early autumn will come.

The appearance among the snow on thawed patches, on steeps and slopes, on railway slopes of the first yellow flowers of the earliest spring plant, popularly known as "mother - and - stepmother" - sure sign the onset of heat in late March - early April. If in the meadows, in forest glades and among the bushes in the first half of April, golden-yellow flowers of primrose bloom, rams (in Western Europe and in some regions of Russia they are called bells), you need to wait for the first warm days. White caps of honey-bearing flowers of song-singing mountain ash are an exact harbinger of a change to warmth.

To establish warm weather also indicates spring sap flow in maple and other trees. The appearance on the surface of the water in ponds, rivers, lakes of a wide green leaf of a white lily, our northern lotus, marks the end of frost.

Copious secretion of droplets of sticky liquid on wide leaf plates. horse chestnut usually heralds the onset of a long rainy period.

“When to sow, when to reap, when to throw stacks”, based on centuries of experience, folk agronomy teaches not to miss the deadlines for agricultural work. At the same time, she uses many signs that connect the timing of sowing or planting certain crops with phenological phenomena. The living calendar of nature is taken as a basis: the beginning of bird cherry blossoms, the time when oak buds burst, catkins near birch. And the choice, I must say, was made correctly, since these indicators, as practice has shown, are very, very reliable.

The appearance of snowdrops, hairy hairy "grass-dream" (lilac bells) signals the villagers about the beginning of spring plowing. The beginning of the growth of catkins in flowering maples indicates the sowing time for beets. Aspen blossom announces early sowing date for carrots. The fragrant flowers of the white beauty of the Russian forest - bird cherry - are the best indicator of the time for planting potatoes.

Some agricultural signs even became axioms, firm rules. “This oats, when the birch leaf begins to bloom. The latest sowing of oats is when the apple trees bloom. Strawberries are red - do not sow oats in vain. This wheat when the bird cherry blossoms. Do not sow the wheat before the oak leaf. This barley, when the rye color appears a little. Rowan blossoms - it's time to sow flax. This buckwheat when the grass is good. When the oak blossoms, peas must be sown. In these and other signs, obtained by the practice of many generations, there is a lot of usefulness for science.

Hundreds of plant species accurately tell people about daily weather changes. On lawns and in front gardens, we have broad-leaved cannes (the birthplace of this flower is East India). Cannes bloom from July until frost, pleasing to the eye with red, yellow or variegated flowers. They are called the "rain tree", if transparent droplets of water are found on the wide leaves of plants in the morning, it will definitely rain in the afternoon. Among indoor plants, monstera predicts the weather. The name of this plant with large, almost rounded leathery leaves with slits comes from the Latin word meaning "extraordinary", "amazing". Before the rain, the monstera begins to "cry". Moisture droplets appear at the ends of its leaves.

"Crying" predict a change in the weather, many aquatic plants- arrowhead, chastuha, burdock, plakun-grass, telorez, woody and shrubby plants - aspen, alder, bird cherry, various willows. Sometimes drops fall from willow leaves so often that the ground under the trees becomes wet. Apparently this is where it happened vernacular name"weeping willow" A few hours before the rain, they “cry” and osokori, getting rid of excess moisture.

How do plants know about the approaching bad weather? The fact is that plants have a lot of water. It evaporates all the time. With high humidity, especially before rain, evaporation is weak. The moisture coming from the ground begins to drip from the leaves, due to it the release of sweet nectar increases, with its participation the position of leaves, petals and branches changes. The physiological process associated with the water exchange of plants is scientific name"guttation", from the Latin "gutta" - a drop.

Of the crybaby trees, maple stands out in particular. By rain, water droplets appear on it in the place where the leaf cuttings are attached to the branches. There is an opinion that among the "weeping" barometers maple is the champion. He predicts bad weather sometimes three, or even four days before the rain!

The "weeping" of plants can be observed at any time of the year - in spring, and in summer, and in autumn, and even in winter. AT northern regions, where harsh winters common occurrence. In the homes of flower growers, you can see calla lilies on the windowsills. Outside the windows of thirty, forty degrees of frost, and large emerald leaves of plants drop transparent drops. This means that in an hour or two the thaw will come. As a rule, callas are not mistaken.

Elegant mimosa trees accurately predict the weather. This plant tropical zone earth. Beautiful trees at night and before the onset of bad weather fold their leaves, as if they are afraid to soak them. Sensitive to bad weather and their bright pink, delicate fluffy flowers.

A true barometer is the yellow and white acacia flowers: before the rain they open and release a lot of nectar. Its aroma can be heard hundreds of meters away. It attracts bees and other insects to acacias. In dry weather, you will not see insects near the acacia, at this time it “does not treat” them with sweet nectar. The same thing happens with currants, honeysuckle, sweet clover.

It is known that if the flowers of these plants suddenly smell strongly - wait for the rain. Well, the insects are right there. At night by strong smell honeysuckle can determine what the weather will be like tomorrow. AT cold weather the smell of its flowers is barely perceptible. Of the plants that secrete nectar before rain, meadow drowsiness is also widely known. During the day, its flowers are covered, as if sleeping, dozing. Hence the name of the plant - drema. Sandman opens its petals only in the evening, they are pollinated by nocturnal insects, mainly butterflies. But they do not attract insects every evening, since their secretion of nectar depends on the weather. If a lot of butterflies have been sitting on the flowers of a dream since the evening, this means that the flowers secrete a lot of nectar, that is, tomorrow you should expect rain. But it also happens differently. In the evening, the drowsiness opens its flowers, butterflies fly up to them, but do not linger for a long time, sit down for a moment and immediately fly away. As if the flowers had become uninteresting, unpleasant for them. Actually it is. Before good weather, nectar flowers do not emit nectar. Naturally, the butterflies immediately leave them.

Regulates the release of nectar according to the weather and adonis. It belongs to the ranunculaceae family, and is distinguished by the fact that its large fragrant flowers open in the evening. But he does not always treat his "guests". If insects, for example large butterflies purple hawk moth, fly past the flower and do not sit on it, which means that the flowers do not emit nectar. This usually happens before clear weather. And vice versa, a butterfly sits on a flower, which means there is nectar in it, which usually happens before the rain. Marigold flowers, mallow, morning glory are very sensitive to weather changes. These are real weather forecasters. The sky is still clear, blue and bottomless, and these flowers have already squeezed their petals tightly, as if withered. So it will rain soon.

Reliable barometer - violet. If a flower cheerfully looks at the world with a violet eye, it means that it rejoices in a long good sunny weather. But it happens that the violet closes its flower and droops, as if saying with all its appearance, expect bad weather. Before cloudy and rainy weather, gramophone flowers, field bindweed close their petals, meadow clover leaves fold, forest grains hang inflorescences, lean down, almost touching the ground with petals, a daisy flower. The white and lilac flowers of the meadow core droop before a bad weather. The flower corollas of celandine growing in the shade among weeds behave in the same way.

The approach of rain is also indicated by the flowers of a small weed plant, the mosquito plant, closed in the morning. The plant, as it were, protects its flowers and their pollen from the destructive blows of raindrops. The reaction of woodlice flowers is quite sensitive. No matter what the weather is like in the morning, closed flowers always indicate rain. Woodlouse blooms from April to late autumn. This barometer can be used all summer.

Help predict the weather for the near future and the flowers of the ubiquitous dandelions. If the sun is in the sky, and the dandelion flowers close, it will rain. And it happens that the sky is frowning, clouds are floating on it, and dandelion flowers are open. So it won't rain. The faded dandelion continues to serve as a barometer. In dry weather, its white fluffs easily scatter from the lightest touch, from the lightest breeze. A flower behaves differently before a bad weather. Catching an increase in air humidity, he folds his fluffy ball like an umbrella, and then neither rain nor wind are afraid of a dandelion.

In the forest about the upcoming weather (in 15-20 hours) can tell the leaves of the stone and the leaves of the bracken fern. Before bad weather they bend up, and before a good one they twist down. Regularly carries the "weather service" from early spring to late autumn, a weather forecast flower growing in shaded spruce forests, well known to forest lovers under the name "hare cabbage". If its pink or red flowers do not curl up as usual, but bloom at night, it is necessary to wait for rain in the morning. But if the flowers of rabbit cabbage normally close at night, this is a sure sign of good weather. And it is no coincidence that many gardeners, gardeners, flower growers plant hare cabbage in a pot and keep it in the apartment on shady windows instead of a barometer.

Spruces have similar, but even more pronounced synoptic abilities. They lower their branches before rain and raise them up before clear weather.

For a long time, hunters-fishers have been quite accurately determining the upcoming weather by the state of the crown of fir trees. Made from spruce branches barometers for use in the winter hut. The ability to react to the weather is preserved in a dry tree, in dried branches.

Home, homemade barometer from a knot of spruce can be easily made. A small part of the trunk of a young Christmas tree is cut out along with a branch, cleaned of bark and the “device” is ready. The branch is attached to some support, to the wall, for example, leaving the branch free. The fixed knot begins to react to the weather, lowering the end of the branch before rain and raising it up before clear weather. The amplitude of the movement of the end of the branch depends on its length. With a branch length of 32 cm, the swing amplitude reaches 11 cm. For convenience, near the end of the branch, a scale drawn on paper with divisions every centimeter is strengthened. After some time, when the branch shows its abilities, marks are made on the scale - “clear”, “variably”, “rain”, as on a conventional aneroid barometer.

For the device of a "living home barometer" it is not necessary to take a stump of a spruce trunk. You can use feather grass, a plant of the steppes. The feather grass stalks woven into a “rope” are placed in a cardboard box. One end is fixed, and the other is attached to the arrow. Moving, she points to one of two inscriptions - “rain” or “clear”. "Barometer" is based on the property of feather grass to curl up before the rain. In arid steppes, this feature of the plant helps it survive.