A complete general-purpose garden fertilizer -- such as 8-8-8, 10-10-10,
12-4-8 or 16-4-8 -- is ideal for crape myrtle. To newly planted small plants
(1-gallon size), apply 1 teaspoon of fertilizer monthly from March to August
along the perimeter of the planting hole. Larger, established plants will
benefit from one broadcast application of fertilizer in spring. Apply 8-8-8
or 10-10-10 at a rate of 1 lb. per 100 sq. ft. or 12-4-8 or 16-4-8 at a rate
of ½ lb. per 100 sq. ft. Avoid over-fertilization because it causes excess
growth and reduced flowering. The best time to fertilize is just before a
rain. Otherwise, water in the fertilizer after application with irrigation.
It is not necessary to remove mulch when fertilizing.
"Apropos" wrote in message
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What should I use?