Troubleshooting
Potomac Early snapdragon problems — and how to fix them
Potomac Early snapdragon (Antirrhinum majus 'Potomac Early') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Rust (Puccinia antirrhini)
Orange-brown pustules on undersides of leaves are the most common snapdragon disease. Improve air circulation, avoid wetting foliage, remove infected leaves promptly, and apply a copper-based fungicide if severe.
Botrytis grey mould
Grey, fuzzy mould on flowers and stems appears in cool, damp conditions. Remove affected tissue, space plants adequately, and water at the base rather than overhead.
Aphid infestations
Colonies of green or black aphids cluster on soft growing tips, distorting buds and reducing stem quality. Blast off with water, apply insecticidal soap, or introduce lacewing larvae as biological control.
Prevent potomac early snapdragon problems before they start
Most potomac early snapdragon issues are care-mismatch, not bad luck. Dial in the basics:
Potomac Early snapdragon problems — FAQ
Why is my potomac early snapdragon rust (puccinia antirrhini)?
Orange-brown pustules on undersides of leaves are the most common snapdragon disease. Improve air circulation, avoid wetting foliage, remove infected leaves promptly, and apply a copper-based fungicide if severe.
Why is my potomac early snapdragon botrytis grey mould?
Grey, fuzzy mould on flowers and stems appears in cool, damp conditions. Remove affected tissue, space plants adequately, and water at the base rather than overhead.
Why is my potomac early snapdragon aphid infestations?
Colonies of green or black aphids cluster on soft growing tips, distorting buds and reducing stem quality. Blast off with water, apply insecticidal soap, or introduce lacewing larvae as biological control.