White Slimy Goo on Sunflowers: Slug Excretion, Iron Phosphate Treatment

Sunflowers have white slimy goo near flower heads and under leaves near flowers.

Cause: Slug Slime

The goo is slug mucus trails. Slugs feed at night, leaving silvery slime trails on plants.

Organic Control

Apply iron phosphate bait (Sluggo, Escar-Go) at plant bases and on flowers. Highly effective, safe for pets/wildlife. Available at:

• Gardens Alive
• Planet Natural
• Local garden centers

Reapply after rain. Mulch with straw or crushed eggshells as additional barrier.