How to raise sunflower flowers (about sunflower varieties and names)

There is a plant whose flowers follow the sun. It is a sunflower, symbolizing firm faith and courage. All kinds of edible sunflowers were planted before. With the rise of sunflower gardening varieties, there are more and more pure ornamental sunflowers, which are more and more loved by flower lovers. Today, Lan Yao will briefly introduce the planting and management methods of potted ornamental sunflowers.

Sunflower potted plant and its management method

Sunflowers are generally propagated by sowing. Sunflower is a common food. Because melon seeds are to be harvested, the sowing time is usually between April and June every spring. Ornamental sunflowers have good cold tolerance and generally do not collect seeds, so the sowing time and requirements are relatively loose, and they can be sown in spring and autumn.

1, sunflower sowing method

Sunflowers should be soaked in warm water for 2-3 hours before sowing. Soaking seeds can accelerate the germination of sunflowers. Of course, it is ok for the seeds not to soak, but the germination will be slower.

When sowing, it is recommended to use loose and breathable soil and plant one seed in a pot, so that there is no need to divide the seedlings. When sowing, first wet the soil with water, fill the flowerpot, then poke a hole in the middle of the soil, put sunflower seeds in it, then dial the soil next to it, cover the seeds, and finally spray water to completely soak the soil.

If it is planted in autumn, it usually takes 3-5 days to put it in a cool and ventilated place and wait for germination. If it is planted in spring, it should be placed in a relatively warm place to keep the soil moist and wait for germination.

2. Sunflower seedling maintenance

After sunflower seeds germinate and break ground, they should be moved to sunny places in time. If the weather is very hot, pay attention to avoid sudden exposure, and gradually increase the light until it reaches full sunshine.

Sunflower seedlings are not drought-tolerant, so it is advisable to keep the soil moist before growing real leaves, and don't over-dry. After the sunflower seedlings grow real leaves, watering can be gradually turned into drying and thorough watering, and at the same time, dilute fertilizer water can be applied, such as irrigating the roots with 2,500-3,000 times of Huaduoduo 1, or sprinkling 3-5 slow-release fertilizers on the edge of the seedling pot.

3. Sunflower growth period management

With the growth of sunflower seedlings, fertilizer and water should also keep up, keep topdressing Huaduoduo 1 or compound fertilizer once a week, and keep sufficient light at the same time.

When the roots of sunflower seedlings are full of seedling pots, you can change to a bigger flowerpot. It is suggested that the potting soil should be mixed with general nutrient soil or peat soil 1 serving, humus soil 1 serving and perlite 1 serving. When put into the pot, rapeseed cake fertilizer can be added to the bottom of the pot as the base fertilizer, or fermented organic fertilizer can be used as the base fertilizer, and the base fertilizer should be separated from the roots of sunflower seedlings.

It is suggested that with the growth of seedlings, a standard pot should be replaced gradually, so as to avoid the pot of seedlings and avoid stuffy roots. Generally speaking, the management of sunflower potted plants is relatively simple. If the natural flowering state is topdressing, you can do this, dry thoroughly, irrigate thoroughly, keep topdressing for 7- 10 days until the flower buds grow out, then continue to maintain with phosphorus and potassium fertilizers and wait for flowering.

4. Pruning of sunflowers

Regarding the pruning of sunflowers, this is an unnecessary operation. If it is a dwarf sunflower, it can grow and bloom naturally. If it is a relatively tall sunflower, or a cut sunflower, then you can trim it appropriately.

(1) topping promotes branching.

For sunflower varieties with tall plants, we can top them at seedling stage, because the natural branches of sunflower are very poor, and there are basically no branches, and branches and buds will grow at the top. When potted for viewing, topping can be carried out during the rapid growth period of seedlings to promote the long branches of sunflowers, and at the same time, the height of plants will be shortened and the flowering volume will increase relatively, but attention should be paid to maintaining sufficient fertilizer and water.

If the autumn sowing is late, it is recommended not to top, so as to avoid the slow growth of sunflower and the delay of flowering time after the temperature drops.

(2), pruning the top flowers

Edible sunflower usually has some small branches and flower buds below the top, but it can't bloom normally. Ornamental sunflower, relatively speaking, most of these branches at the top can bloom, but the quality of flowers will also decline with more flower heads. If we are cultivating high-quality cut sunflower, we can cut off all the small branches below the top flower and concentrate on supplying nutrients, so that the sunflower will bloom bigger and look better. Pay attention to sunflower varieties with small flowers and many heads, and don't cut the side flowers.

Of course, if we are just potted plants, we can keep small buds in order to prolong the flowering period, but we should also pay attention to maintaining sufficient fertilizer and water and applying more phosphorus and potassium fertilizers to avoid small or deformed lateral flowers caused by lack of fertilizer.

Ornamental sunflowers have certain cold tolerance, but they will stop growing when the temperature is too low. The temperature should be kept above 10 degrees in winter night, so that the sunflower can continue to grow and bloom. Cut it out and put it in a vase after the flowers bloom, and change the water every day. The room temperature is about 10 degree, and the flowering period can last 10- 15 days.