Crepe Myrtle Fertilizer

Every 1–2 weeks during spring and summer through the growth and bloom season, and every 4 weeks in fall and winter. Diluting into your regular watering (2 Tbs per gallon) keeps nutrition steady — because crepe myrtles bloom on new growth, consistent feeding through the season directly supports more and longer-lasting flowers.

At 1 tsp per quart, the 8 oz bottle makes about 48 watering cans of feed. For a typical shelf of 10–15 plants fed every 1–2 weeks in season, that's several months of feeding — and the 32 oz bottle four times that.

Crepe myrtles flower on new wood, so anything that supports healthy new growth supports blooming — steady feeding, full sun, and enough water. Feed through spring and summer, give the plant at least six hours of direct sun, and deadhead spent flower clusters, which often triggers a second flush of bloom later in the season.

Prune in late winter or early spring before growth starts — since crepe myrtles bloom on new wood, spring pruning shapes the plant without sacrificing flowers, and avoids the harmful over-pruning known as topping. Begin feeding as new growth emerges in spring and continue through summer to fuel the bloom the new wood produces.

No — at the directed dilution, the formula is designed for regular use. All-nitrate nitrogen and low salt concentration make burn very unlikely, even on young trees. For newly planted crepe myrtles still establishing, start at half strength for the first two feedings.

New growth greens up within the first few weeks of feeding, and because blooms form on that new growth, better flowering follows through the summer season. Consistently fed crepe myrtles tend to bloom more heavily and for longer, and young trees establish and fill out faster.