The secret of sunflower flowering is "accumulated temperature", that is, plants can bloom as long as they accumulate a certain temperature during their growth. Flowers mostly bloom at 4 ~ 6 o'clock in the morning, pollinated and fertilized the next morning, and unfertilized branches can keep 7 ~10 days without wilting.
However, the varieties planted are different, and the flowering time is also different. It is a kind of plant that blooms easily, and it takes a week from tongue-shaped flower to flower opening. Moreover, its growth rate is also very fast, from the beginning of planting to flowering, it only takes about 60 days.
Cultivation and management skills of sunflower;
1. soil
Sunflower is not picky about soil, and it can adapt to ordinary soil quickly, but it is best to give it loose and breathable soil with good drainage as soil.
Step 2 light
The more sunlight, the better the sunflower grows. Be sure to give it enough light, even when the summer light is strong, there is no need to cover it.
3. Temperature
Sunflower is not tolerant to low temperature, and the most suitable temperature for its growth is 26℃~29℃, and its cultivation temperature should not be lower than 15℃. When the ambient temperature is too low, it should be kept warm in time.
Step 4 water it
When watering the sunflower, it should be dry and wet, and it must not be watered too much to produce water in the basin, which will lead to its rotten roots.