Troubleshooting
Green Comet Milkweed problems — and how to fix them
Green Comet Milkweed (Asclepias viridiflora) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Monarch caterpillar defoliation
As a host plant for monarch butterflies, plants can be completely stripped by caterpillars in late summer — this is an ecologically desirable outcome; plants typically re-flush or have already set seed by that point.
Crown rot in poorly drained sites
Consistently moist or waterlogged soils cause crown and root rot; always site in raised or sloped positions with gravelly or sandy substrate to ensure water moves away from the crown rapidly.
Prevent green comet milkweed problems before they start
Most green comet milkweed issues are care-mismatch, not bad luck. Dial in the basics:
Green Comet Milkweed problems — FAQ
Why is my green comet milkweed monarch caterpillar defoliation?
As a host plant for monarch butterflies, plants can be completely stripped by caterpillars in late summer — this is an ecologically desirable outcome; plants typically re-flush or have already set seed by that point.
Why is my green comet milkweed crown rot in poorly drained sites?
Consistently moist or waterlogged soils cause crown and root rot; always site in raised or sloped positions with gravelly or sandy substrate to ensure water moves away from the crown rapidly.