Encouraging Blooms on Flowering Crabapple

Why It May Not Bloom

“Volunteer” origin does not prevent blooming. Age, nutrition, and light are key. At 6–8 feet tall, it should be mature enough.

Apply bloom booster fertilizer (5-30-5) at 1 lb per inch trunk diameter in fall or early spring.
Avoid lawn “weed-and-feed” products—the herbicide kills trees.
Mulch 3″ deep (keep off trunk) to conserve moisture.

Full sun and proper nutrition should induce flowering.

Trees: Crabapple Sparse Blooms and Bark Craters: Atomic Grow for Insect Cleanup and Vigor; Tulip Tree Not Flowering at 5-6 Years: Normal, But Fertilize; Diagnosing a Non-Flowering Cherry Tree: Is It Dead?; Flowering Crabapple Sucker Propagation: Roots Required; Flowering Plum Died After Sucker Pruning: Regrow from Base; Cleveland Pear Thinning Canopy: Fertilize, Avoid Weed-and-Feed; Transplanting Memorial Crabapples: Ground, Not Pots; Fall or Spring; Tree Fertilizer Spikes vs. Broadcast: Broadcast Wins; Fertilizing a Neglected Avocado Tree for Fruit Production; Jade Plant Fertilizer: Miracle-Gro Monthly, Pause in Deep Winter

Garden Articles

Plants