What fertilizer should crape myrtle be put on in March, what medicine should it take and how much water should it be watered?

Lagerstroemia indica should apply shoot-pulling fertilizer in early March, combined with nitrogen, phosphorus and potassium: apply phosphorus and potassium fertilizer once from late May to early June to strengthen branches and promote flowers; Apply a flowering fertilizer at the end of July and the beginning of September. The fertilizer is cake fertilizer and water to make the flowers bloom brightly. If diseases are found, use Bordeaux solution or 600 times carbendazim solution to prevent them.

Jiangxi Green Agricultural Development Co., Ltd. gives it to you.