How to plant sunflowers
The sunflower (scientific name: Helianthus annuus) is a vibrant flower known for its bright yellow petals and tall stems. It is not only beautiful, but it also adds vitality to the garden. Here is a detailed guide on sunflower planting, combining hot topics and hot content for the past 10 days to help you successfully grow sunflowers.
1. The planting time of sunflower
Sunflowers prefer warm climates and are best grown in spring or early summer. The specific time varies by region:
| area | Best time to plant |
|---|---|
| Northern Region | Late April to mid-May |
| Southern Region | Late March to mid-April |
2. Planting steps for sunflower
1.Select seeds: The sunflower seeds should be selected for full and pest-free varieties. Popular varieties in the past 10 days include "Big Mac" and "Dwarf Sunflower".
2.Prepare the soil: Sunflowers like loose and well-drained soil. Humi or sand can be added to the soil to improve breathability.
3.sowing: Sprinkle seeds directly on the soil surface and cover about 1-2 cm of thin soil. Keep the soil moist, but not too wet.
4.illumination: The sun flower needs sufficient sunshine, at least 6-8 hours a day. Ensure that the planting site is sunny.
5.Watering: Keep the soil moist during the seedling stage, reduce the watering frequency after maturity, and avoid water accumulation.
3. Maintenance points of sunflower
| Maintenance projects | Things to note |
|---|---|
| Fertilization | Apply low nitrogen, high phosphorus and potassium fertilizer every 2 weeks during the growth period |
| Pest control | Pay attention to the prevention and control of aphids and molds, and use organic insecticides |
| support | Tall varieties need to be supported by bamboo poles to prevent falling down |
4. Frequently Asked Questions about Sunflowers
1.Why don’t my sunflowers bloom?: It may be due to insufficient light or excessive nitrogen fertilizer. It is recommended to increase the light and adjust the fertilizer ratio.
2.What should I do if the leaves of the sunflower turn yellow?: It may be because of excessive watering or poor soil drainage, so soil moisture needs to be checked and drainage conditions need to be improved.
3.How to prolong the flowering period of sunflowers?: Remove residual flowers in time to avoid nutrient consumption and maintain appropriate water and fertilizer management.
5. Harvest and uses of sunflowers
Not only can sunflowers be ornamental, but their seeds can also be eaten or oil-reduced. Here are the nutrients of sunflower seeds:
| Nutritional ingredients | Content (per 100 grams) |
|---|---|
| protein | 20g |
| Fat | 50g |
| carbohydrate | 20g |
| Vitamin E | 35 mg |
6. Conclusion
Sunflower is an easy-to-grow and versatile flower for beginners and gardeners. With reasonable planting and maintenance, you can enjoy its beautiful blooms at home or in the garden. Hope this guide will help you successfully grow sunflowers!
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