Troubleshooting
White Arrow Arum problems — and how to fix them
White Arrow Arum (Peltandra sagittifolia) 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.
Crown rot
If planted in stagnant, anaerobic mud without water movement, crown rot can occur. Improve water circulation or refresh the planting medium annually.
Aphid infestation
New foliage emerging in spring can attract aphids. A strong jet of water or insecticidal soap spray is effective; avoid systemic pesticides near water features.
Failure to flower
Usually caused by insufficient light or soil too low in organic matter. Move to a sunnier position and enrich the growing medium with well-rotted compost.
Prevent white arrow arum problems before they start
Most white arrow arum issues are care-mismatch, not bad luck. Dial in the basics:
White Arrow Arum problems — FAQ
Why is my white arrow arum crown rot?
If planted in stagnant, anaerobic mud without water movement, crown rot can occur. Improve water circulation or refresh the planting medium annually.
Why is my white arrow arum aphid infestation?
New foliage emerging in spring can attract aphids. A strong jet of water or insecticidal soap spray is effective; avoid systemic pesticides near water features.
Why is my white arrow arum failure to flower?
Usually caused by insufficient light or soil too low in organic matter. Move to a sunnier position and enrich the growing medium with well-rotted compost.