My lily foliage was damaged by lily beetles. What can be done to prevent or eradicate them?
I suspect because I have very few lilies (like several clumps of martagons only on my several acres) and am in a very rural area without other host lilies in gardens for them to be lured to, I have been spared the lily beetle up till now. We shall see.
But I have done some reading, and it seems that vigilant observation, hand-picking early and often, and perhaps the use of a Neem-oil spray on the larvae are somewhat helpful.
- Blogger Leslie Land addressed this succinctly.
- Gardener’s Supply also had an interesting fact sheet on it.
- A parasitic wasp is apparently providing good control in parts of Europe, where the beetle hails from, but is not yet available here to my knowledge.