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The best way to combat boxwood orange/yellow rust fungus (my terminology). #927667

Asked April 06, 2026, 2:55 PM EDT

What are the most effective procedures and products for combating the orange fungus on boxwoods?

Anne Arundel County Maryland

Expert Response

Can you share images of the symptoms you're describing? Boxwood doesn't get a rust fungus, and the main cause of leaf orange coloration is due to feeding damage (often combined with winter injury) from Boxwood Leafminer, an insect. Management for common boxwood ailments are included on the linked page.

Miri

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