Mass Leaf Drop on 20 Roses: Weather Stress, Not Disease

Mass Leaf Drop on 20 Roses: Weather Stress, Not Disease

In Charlotte, NC, 20 roses losing leaves without yellowing/browning indicates weather/water stress, not pests.

Causes

• Sudden heat after mild spring.
• Root disturbance (animals, disease).
• Over-fertilizing in heat (hybrid teas especially).

Why Not to Spray

Systemic fungicides won't help; no insects visible on 20 bushes. Nice blooms confirm plant health.

Warning

Triple phosphate and lime can lock up nutrients—most soils have enough.