How to learn whether plants like light or shade?

Xiyang? Hi, Yin? How to judge the light requirement of plants!

A sign that the light is too strong or too weak.

1, too strong light, plants appear yellowing, wilting and sunburn.

2, the light is too weak, the leaves of the plants are yellow and the weeds are overgrown.

For the light demand, plants can be divided into positive plants, negative plants and neutral plants.

Positive plants: they all like strong light and are not tolerant of shade. Some flowers can grow well even in the long sunshine environment of 14 hours or more. Insufficient sunshine can easily lead to long white branches and leaves, soft and delicate tissues, pale and yellow leaves, difficulty in flowering or poor flowering, and easy occurrence of diseases and insect pests.

Negative plants: Only winter and early spring can receive more light. If exposed to dry and bright light for a long time, the branches and leaves will turn yellow, grow slowly, and even lead to death.

Neutral plants: between positive flowers and negative flowers, they do not need long-term sunshine and grow well in sunny conditions, but they need a little shade when the light intensity is high in summer.

Identification method

Positive plants:

1, most flowers and fruits are positive plants, such as magnolia, rose, pomegranate, plum blossom, crape myrtle and citrus.

2. Most aquatic plants, psammophytes and succulents are positive.

3. There are positive flowers in a few foliage flowers, such as cycads, palms and deciduous trees.

4. Needle-leaf coniferous flowers and trees are mostly positive, such as five-needle pine and cedar.

5, deciduous broad-leaved flowers and trees are mostly positive, such as rose, purple jasmine, lotus, peach blossom, plum blossom, chrysanthemum and so on.

6. Flowers with smaller leaves usually prefer light, such as five-needle pine, succulents, tiger thorns and desert roses.

7. Most large and sparse branches and leaves are masculine, such as a bunch of red and colorful grass and oleander.

Negative plants:

1, most foliage plants, such as asparagus, Hosta, green radish, arrowroot, taro, evergreen, ivy, tortoise shell bamboo, begonia and so on.

2. A few flowering plants are also negative plants, such as camellia and rhododendron.

3. Plants growing in tropical rainforests, shady slopes, valleys and other humid areas should be properly shaded, even if the sunlight is not too strong, such as ferns.

4. Leaves with flat scales are mostly negative, such as Platycladus orientalis and Podocarpus.

5. Evergreen broad-leaved flowers and trees are mostly negative or semi-negative, such as begonia, evergreen, camellia and bamboo.

6. Small and dense branches and leaves are mostly semi-negative, such as asparagus, Gracilaria lemaneiformis, Nandina domestica, Adiantum, Acer truncatum and so on.

7. Flowers with thick leathery leaves are mostly shade-tolerant flowers, such as rubber tree, clivia, green radish, African violet, octagonal gold plate, flower taro and so on. These flowers and plants usually have enough scattered light to meet the growth needs.

8. Flowers with thin leaves prefer semi-shady environment, and can only grow healthily in an environment with strong scattered light, such as Jinshan Brown, Tortoise Shell Bamboo and Drip Guanyin.

Neutral flowers: such as gardenia, hibiscus, osmanthus, jasmine, white orchid, hydrangea, begonia and so on.

To sum up, all kinds of flowers have different requirements for light, even the same flower has different requirements for light at different growth and development stages. The light requirement of seedlings can be gradually increased, but it is required that positive chrysanthemums form buds under short sunshine conditions.