Fertilizer for crepe myrtle

Answer 1

[1] A general garden fertilizer works well for crape myrtle. [2] Apply 1 tsp/5 ml monthly, March-August, along the planting hole edges of newly planted crape myrtles. Once established, 1-1/2-2 years later, just broadcast fertilizer in spring. [3] Good NPK ratios to look for are 8-8-8, and 10-10-10. Such equally weighted nitrogen, phosphorus, potassium fertilizers need to be applied at the rate of 1 lb/0.45 kg per 100 sq ft/9.29 sq m. [4] The heavier nitrogen fertilizers, ratioed at 12-4-8 or 16-4-8, also work. But they should be applied at the rate of 0.5 lb/0.22 kg per 100 sq ft/9.29 sq m. For too much nitrogen in the soil causes dense, lush vegetative growth at the expense of bloom.