Vegetable Crops Hotline A newsletter for commercial vegetable growers prepared by the Purdue University Cooperative Extension Service

Downy mildew of Basil

Downy mildew of basil.

Figure 1. Downy mildew of basil. Upper side of leaf.

Downy mildew of basil.

Figure 2. Downy mildew of basil underside of leaf showing sporulation.

Page last modified: May 8, 2023

Vegetable Crops Hotline - Horticulture & Landscape Architecture, 625 Agriculture Mall, West Lafayette, IN 47907

© 2026 Purdue UniversityAn equal access/equal opportunity universityCopyright ComplaintsMaintained by Vegetable Crops Hotline

If you have trouble accessing this page because of a disability, please contact Vegetable Crops Hotline at plangenh@purdue.eduAccessibility Resources