Can sunflowers be kept indoors?
Sunflowers blooming on the windowsill always bring vitality, but many people are always worried that lack of light will affect growth when trying indoor planting. This plant, known as the "immortal flower", actually has amazing adaptability. As long as you master a few key elements, you can completely create a mini sun garden indoors. Feasibility analysis of indoor planting Safety and decorative value As a non-toxic ornamental plant, the entire plant of Sunflower does not contain allergens. Its fleshy stems and leaves can effectively absorb suspended particles, and its plant height of 60-80cm is particularly suitable for windowsill landscaping. After experimental testing, placing 3 basins in a space of 15㎡ can increase the air humidity by 12%. The new explanation of lighting needs is different from traditional perceptions. Sunflowers are healthier when alternating direct light and scattered light. It is recommended to ensure direct light for more than 4 hours every day, and it can be used with fill light to maintain growth on rainy days. The bay window facing southeast is the best choice. In summer, you need to avoid the strong noon light. The photoperiod adjustment technique of the flowering quantity improvement plan adopts the morning light wake-up method: the curtains are opened at a fixed time every day to stimulate flower bud differentiation through the biological clock. Maintain a light duration of 14 hours/day during the flowering period, and a smart timer can be used to control the light filling system. Nutritional management strategies recommend using a 3:1 compound formula of potassium dihydrogen phosphate and seaweed fertilizer, sprayed on the leaves every 10 days. Adding calcium and magnesium fertilizer during the bud stage can make the petals thicker by 30% and extend the flowering period by 5-7 days. Key points for seasonal adjustment of the year-round maintenance calendar: Maintain the natural growth rhythm in spring and autumn, turn on circulating fans in summer to promote ventilation, and use bottom heating mats to maintain the ground temperature of 18℃ in winter. Turn the flowerpot 90 degrees every month to prevent off-crown growth. The pest and disease control system establishes a preventive spraying system: use tobacco water to prevent aphids in spring, and use garlic juice to prevent red spiders in summer. Scale insects are found immediately and physically removed with alcohol cotton swabs.
Through a systematic maintenance plan, indoor sunflowers can achieve an ornamental effect of blooming for more than 200 days a year. Choose dwarf varieties and creative flower utensils to create three-dimensional flower walls even in small units. Remember the principle that "light is the lifeline and ventilation is the guarantee line", and everyone can become an expert in sunflower maintenance.