Many flowers that are intolerant to high temperatures have entered a dormant state in summer, but sunflowers are becoming more and more vigorous, and they are constantly pregnant and blooming, which is very popular.
However, some flower lovers reported that the sunflowers they raised did not grow very well, and the number of blooms was very small, with only a few small flowers. Why are the flowering effects of sunflowers so different when growing the same sunflowers? How should we care for sunflowers so that they can grow vigorously and bloom abundantly?
1. Cultivation soil requirements
Many florists believe that sunflowers are very easy to grow and have strong adaptability to the environment. They can be grown in any soil, so in When planting, dig some roadside soil for use. Although this kind of culture soil can also support sunflowers, it is not easy for the plants to grow vigorously, because the soil is sparse in nutrients, sticky and prone to compaction, which has an impact on plant growth.
To raise sunflowers, it is best to use some leaf mold soil, then add a small amount of garden soil and river sand, mix evenly and use it as culture soil. This kind of culture soil is loose and breathable, and the soil itself is rich in nutrients, which is conducive to plant growth and development.
2. Watering should not be done too frequently
Sunflowers are very drought-tolerant plants, but they are afraid of waterlogging. Do not water them too much during daily maintenance. If the pot soil Too much moisture for a long time can easily cause root rot. Every time you water, wait until the soil on the surface of the pot is dry before watering again, so that you can see both dryness and moisture.
There is a lot of rain in summer. Sunflower pots placed outdoors should pay attention to drainage after the rain and pour out the accumulated water in the pots in time to prevent root rot.
3. Regularly fertilize to supplement nutrients
When potting sunflowers, you can use more nutrient-rich leaf mold soil, so that the seedlings can generally grow vigorously. During the growth period, if you water it frequently with some thin fertilizer and water, the plant will grow branches and leaves quickly.
After entering June, the sunflowers begin to germinate flower buds. At this time, it is necessary to supplement it with phosphorus and potassium fertilizer several times. For example, you can use 1:1000 potassium dihydrogen phosphate aqueous solution to water the sunflowers before they bloom. Applying phosphorus and potassium fertilizer to it several times can make the plant bloom more and bigger, and make the flower color more vivid.
4. There must be sufficient light
Raising sunflowers cannot be separated from sufficient light. If the potted plants are maintained in an environment without sunlight, it will cause the branches and leaves to grow. They grow many and thin, and in the flowering period they bloom very little or even not at all.
Because sunflowers are plants that are highly dependent on sunlight, they must be given sufficient light even in summer. Don't worry about the sun damaging the branches and leaves. Plants can only carry out photosynthesis under sufficient light conditions, promote the differentiation of flower buds, and complete the flowering of buds.
5. Prune branches and leaves to promote branch growth
For sunflowers in the seedling stage, you can top them when they grow to 8-10cm. After topping, the plants will grow from the bottom to More lateral branches will sprout, thereby increasing the number of buds and flowers. If you don't top it, the sunflower will have fewer branches and there will naturally be few flowers during the flowering period.
In addition to topping it during the growth period, it is also necessary to properly prune overly dense and thin branches to reduce nutrient consumption and increase ventilation and light transmittance between branches and leaves to facilitate the growth and development of the plant.
If you want to plant sunflowers in pots at home, if you want them to grow vigorously and bloom in full pots, you must maintain sufficient water and fertilizer during the growth period, prune and topping them appropriately, and let them bask in the sun as much as possible. In this way, the plants will grow with luxuriant branches and leaves, and the flowers will fill the pot.