Troubleshooting
Striped Amaryllis problems — and how to fix them
Striped Amaryllis (Hippeastrum vittatum) 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.
Narcissus bulb fly
Larvae tunnel into bulbs. Inspect purchased bulbs carefully and avoid planting soft or damaged bulbs.
Red blotch (Stagonospora curtisii)
Causes red streaks or lesions on leaves, flower stalk, and bulb scales. Buy from reputable sources, use fresh compost, and remove infected material. A bordeaux mixture drench may help in severe cases.
Failure to reflower
Result of insufficient summer foliage time (needed to rebuild bulb reserves) or skipping dormancy. Follow the full growth–dormancy–cool-rest cycle.
Rotting bulb neck
Caused by overwatering when dormant or planting too deeply. Ensure the top third of the bulb is above compost and reduce watering drastically during dormancy.
Mealybugs
Can colonise the neck and leaf bases. Treat with cotton swabs dipped in 70% isopropyl alcohol or use a neem oil spray.
Prevent striped amaryllis problems before they start
Most striped amaryllis issues are care-mismatch, not bad luck. Dial in the basics:
Striped Amaryllis problems — FAQ
Why is my striped amaryllis narcissus bulb fly?
Larvae tunnel into bulbs. Inspect purchased bulbs carefully and avoid planting soft or damaged bulbs.
Why is my striped amaryllis red blotch (stagonospora curtisii)?
Causes red streaks or lesions on leaves, flower stalk, and bulb scales. Buy from reputable sources, use fresh compost, and remove infected material. A bordeaux mixture drench may help in severe cases.
Why is my striped amaryllis failure to reflower?
Result of insufficient summer foliage time (needed to rebuild bulb reserves) or skipping dormancy. Follow the full growth–dormancy–cool-rest cycle.
Why is my striped amaryllis rotting bulb neck?
Caused by overwatering when dormant or planting too deeply. Ensure the top third of the bulb is above compost and reduce watering drastically during dormancy.
Why is my striped amaryllis mealybugs?
Can colonise the neck and leaf bases. Treat with cotton swabs dipped in 70% isopropyl alcohol or use a neem oil spray.