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Does anyone know about geranium?
There is information about geranium, but geranium ... geranium is a perennial herb flower of Leguminosae, which is native to South Africa. Palm-shaped leaves, long stems, serrated edges and deep ring stripes on the leaves. Corolla usually has five petals, umbels and long straight pedicels. Because the flowers are as dense as balls, it is also called foreign hydrangea. The colors of red, white, pink and purple vary greatly. The flowering period begins in early winter and lasts until early summer of the following year. Indoor and outdoor decoration should use potted plants; It can also be used as a flower bed in spring.

Geranium is strong and has few pests and diseases; Its adaptability is also very strong, all kinds of soil can grow, but sandy loam rich in humus grows best; Like sunshine, so warm, a little drought-tolerant, afraid of water accumulation, not resistant to the exposure of hot summer sun. In summer, plants stop growing, leaves begin to age, and they are half asleep. At this time, you can move them to a cool place outside, stop applying liquid fertilizer, water them on time, and put down the pots in rainy days to prevent the roots from rotting.

Summer in September is very cool. At this time, you can turn over the pot and change the soil. First, cut the branches short, leaving only about 10 cm at the base of each branch, so that the new shoots can be replaced by new branches. Geranium should be watered moderately, and the soil should not be too wet. It is advisable to dry the potted soil for half a day after watering.

The propagation of geranium is mainly cuttage, mostly in spring and autumn, but it can also be cuttage in winter if there is greenhouse equipment. Generally speaking, spring growers can bloom between the New Year and the Spring Festival. Autumn plants can bloom at the end of April. New and old branches are used for cutting, but the shoots at the end of branches grow best after cutting. Cuttings should be about 10 cm long, with two or three upper blades. If you use old strips, you don't need a blade. After the incision is slightly dry in the shade, it should be inserted into clean sand. The sand should be kept slightly wet and not submerged. Put the leaves in a semi-cool place to prevent them from wilting, and then gradually get in touch with the sun after three to five days. It usually takes about two weeks to take root, and when the roots grow to three or four centimeters, they can be cooked.

Winter maintenance of geranium

Geranium likes warm winter and cool summer. In winter, if I 0- 15c is put indoors every day and the temperature is above 8℃ at night, it can bloom normally. But the optimum temperature is 15-20℃. Geranium likes dry and hates wet, so it should not be watered too much in winter, and it should be used both wet and dry. When the soil is wet, the stems are tender, which is not conducive to the germination and opening of flower branches; If the humidity is too high for a long time, the plants will grow white, the flowering branches will move up and the leaves will turn yellow and fall off. Geranium needs plenty of sunshine during its growing period, so it must be placed in a sunny place in winter. Insufficient light, long stems and leaves, soft pedicels and poor inflorescence development; Buds in weak light often fail to bloom and wither ahead of time. Geranium doesn't like big chemical fertilizer, too much chemical fertilizer will make geranium grow too vigorously, which is not conducive to flowering. In order to make the flowers flourish, watering with dilute fat water (bean cake water) once every 1-2 weeks and using potassium dihydrogen phosphate solution 800 times every 7- 10 days can promote normal flowering. Cutting off the broken stems in time after flowering can increase the light between plants, induce new leaves to germinate and extract new stems.

Winter maintenance of geranium

Pelargonium prefers temperature to cold, and measures should be taken to prevent cold in winter. The indoor temperature should be kept at 15℃-20℃ and not lower than 10℃ at night. In low temperature environment, plant growth is weak, which is not conducive to flower bud differentiation, resulting in less flowers or even no flowers. But the environment with temperature higher than 25℃ is not conducive to its growth and development. Usually potted plants should be placed in front of the sunny window to fully accept the light. If the light is insufficient, plants will grow wildly, which will affect the formation of flower buds and even cause the formed flower buds to wither.

Moderate water and fertilizer geranium is afraid of being wet and drought-resistant. Water it properly every day, usually once every 5-7 days, to keep the basin soil dry and slightly wet. Too much watering will cause leaves to turn yellow and fall off, affect flowering, and even lead to root rot and death. Usually, the leaves should be sprayed with clean water frequently to keep them clean, which is beneficial to photosynthesis. In order to keep geranium blooming after winter, it is necessary to supply sufficient nutrients. Dilute liquid fertilizer is applied once every 10 day, and can be mixed with bean cake, hoof slices and fishy water, and then added with water after fermentation.

Pruning and coring In order to promote the flowering of geranium with more branches, plants should be cored many times to promote more branches and buds. After the flowers wither, the residual flowers should be cut off in time, and the branches that are too dense and too thin should be cut off to avoid excessive consumption of nutrients, but it is cold in winter and should not be cut again.

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