Growing giant sunflowers can be a rewarding experience, as they can grow up to a foot each week and produce flowers as big as a dinner plate. However, it is essential to direct sow seeds directly into the garden, as sunflowers have long taproots that can become stunted if not properly cared for. Sow sunflower seeds at the right depth and spacing, ensuring proper moisture and warmth for germination and growth.
To grow the largest sunflowers, choose a spot in your garden that receives plenty of sunlight, as sunflowers love the sun. They need around 6-8 hours of direct sunlight a day. To grow the biggest flower, remove all side shoots so the plant can focus its energy on that main flower. Care: Keep the soil moist by watering regularly until the sunflowers emerge above ground. Remove weeds regularly. Once the plants are growing well, watering once a week is sufficient.
To grow giant sunflowers singly under glass into multipurpose compost from March-April and outdoors from April-June once all risk of frost has passed. Sunflowers can’t handle frost, so wait until at least mid-April (southern UK) or, better, mid-May to sow outside. Start seeds under cover from early March, and the seedlings should appear within 7-14 days. Give them a small amount of water each day. When planting outside, choose a sunny spot where the sun is most effective.
Children can benefit from caring for the plant and practicing early mathematics as they note its growth. By following these tips, you can grow giant sunflowers that grow up to a foot tall and produce beautiful, towering blooms.
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