Butterfly Bush Yellow Lower Leaves: Usually Normal

Butterfly bush (Buddleia) has yellow leaves at bottom. NY state, in ground, no leaf damage. Problem?

Likely Natural Aging

Buddleias are deciduous, fast-growing, and "self-cleaning." Lower leaves yellow and drop as canopy shades them—especially in dense plants. If upper growth is healthy and flowering, no action needed.

When to Worry

• Yellowing spreads upward rapidly.
• Leaf spots, holes, or webbing present.
• Stunted new growth.

Otherwise, enjoy the butterflies.