In addition to seedlings need timely watering, in addition, generally not suitable for more watering. But more water is needed to keep the soil moist. Otherwise, it will cause small yellow leaves and flowers, poor color, and the ornamental value will be greatly reduced. In the whole growth and development period, it is usually enough to apply thin fertilizer three times. In the first ten days of September, the compound fertilizer of chlorine, phosphorus and potassium was applied once. If too much fertilizer is applied, the plant will grow in vain and cause lodging.
When the plant is used as cut flower culture, the high type species should be selected, and the flower at the top of the main stem should be used for cut flower. Because the high type plants are relatively tall, the stems and branches are easy to break when the wind blows, so it is necessary to set up a pillar in time. In high temperature season, the growth of zingiberra vulgaris is weak, its flowering is poor, and it does not bear seeds. At this time should often water, at the same time need to timely control spider, autumn can continue to grow and bloom.
It is necessary to cut off the remaining flowers in time after each bloom to reduce the consumption of nutrients and facilitate the flowering again. At the same time, it is necessary to apply 1-2 times of phosphorus and potassium fertilizer. Do not plant continuously in the same land to reduce the occurrence of disease.
Potted hundred day grass should choose short type seed, choose loose and fertile sandy loam with good drainage as culture soil, sow directly; at the same time, not only need reasonable watering and fertilization, but also pick the heart for 2-3 times, so as to make it branch and blossom more, if managed properly, a pot of hundred day grass can open 10-20 flowers at the same time.
