Marigolds for Insect Repellent? Myth vs. Reality and Proper Care

Gardener bought 6 marigolds to repel insects, plans to pot separately around yard. Asked for care to prolong life.

Care

• Pot ≥10" diameter; clay pots good (heavy, marigolds get top-heavy).
• Full sun.
• Fertilize every 2 weeks with mild liquid feed.
• Marigolds die at frost.

The Repellent Myth

Marigolds don't repel insects in the garden. The belief came from one study: French marigolds plowed into soil reduced nematodes. Living marigolds don't repel pests.

But they're beautiful, tough, and great for color—enjoy them for that!