Black heart chrysanthemum is fond of light, the potted plant that just bought nevertheless, had better be put in astigmatism and ventilated place to get used to 2 days first, add light to arrive again after 2 days full day is illuminated.If it is a half-day maintenance environment, black heart chrysanthemum can also grow as usual, but poor light will affect the flowering of plants.
The most suitable temperature for the growth of Rudbeckia hirta is 15-28 . In winter, the potted plants should be moved indoors to live through the winter, and in winter, the ground plants should be earthed up and covered with hay to prevent cold and live through the winter.
For potted Rudbeckia hirta, the soil should be kept moist during the growing period, but no water should be accumulated.At ordinary times, we can observe the whitening of the soil surface, and the feeling of carrying the pot soil is obviously lighter and watered thoroughly until water flows out from the bottom of the pot.
Just bought the black heart chrysanthemum, often are already flowering potted plants, we have to wait for the flower failure, the residual flowers and flowers under the 2 pairs of leaves cut off.By the way, cut the dead branches and leaves to promote the germination of new branches, and then open a crop of flowers.
In the flowering period of black heart chrysanthemum without fertilization, such as plant flower failure after pruning, half a month topdressing a phosphorus and potassium fertilizer.If you buy seedlings, apply nitrogen, phosphorus and potassium balanced fertilizer and water during the growth period to promote growth, and switch to phosphorus and potassium fertilizer before flowering to promote flowering.
