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Q&A - Will fungicide cause sunburn on a tomato plant?

Question:
Can you spray fungicide on your tomatoes while the sun is shining on them? I would be afraid of sun burn to the plants.

Answer:
If you need to worry about sun burn depends on the kind of fungicide you are using. Master Gardener Tom Mashour uses neem oil which will cause sun burn on tomatoes if applied in the sun. Neem oil should be applied when the sun is low in the sky.  He applies it late in the evening when the sun is setting. The fungicide label should let you know if you need to take precautions.

Related Resources:
Fungicides: Tools for vegetable disease management
Tomato Diseases & Disorders
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  • Home
  • Watch
    • TV Schedule
    • Full Episodes Online
    • How-to and Informational
    • Questions and Answers
    • This Week in the Garden
    • Garden Notes
  • Garden Topic Collections
    • Apple Trees: How-to and Information
    • Peach Trees: How-to and Information
    • Tomatoes: How-to and Information
    • Square Foot Garden Blog
  • Resources
    • Soil Testing
    • Extension Publications
    • Gardening Resources
    • Blogs
    • Organic Gardening
    • Articles
    • Privacy
  • Guests
  • Contact Us
    • Ask a Gardening Gardening Question
  • Search