Troubleshooting
Whorled Solomon's Seal problems — and how to fix them
Whorled Solomon's Seal (Polygonatum verticillatum) 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.
Solomon's Seal Sawfly
The main pest: Phymatocera aterrima larvae devour leaves from late spring to midsummer. Inspect undersides of leaves and remove larvae by hand; repeat applications of pyrethrin insecticide at dusk are effective for heavy infestations.
Slugs and Snails
Emerging shoots are especially susceptible in spring. Iron-phosphate pellets, grit collars, and beer traps all help reduce damage around new growth.
Drought and Heat Stress
Whorled Solomon's Seal is less tolerant of heat and drought than other species. Wilting, brown leaf tips, and premature dormancy indicate dry or sun-stressed conditions. Site in cool shade and mulch generously.
Prevent whorled solomon's seal problems before they start
Most whorled solomon's seal issues are care-mismatch, not bad luck. Dial in the basics:
Whorled Solomon's Seal problems — FAQ
Why is my whorled solomon's seal solomon's seal sawfly?
The main pest: Phymatocera aterrima larvae devour leaves from late spring to midsummer. Inspect undersides of leaves and remove larvae by hand; repeat applications of pyrethrin insecticide at dusk are effective for heavy infestations.
Why is my whorled solomon's seal slugs and snails?
Emerging shoots are especially susceptible in spring. Iron-phosphate pellets, grit collars, and beer traps all help reduce damage around new growth.
Why is my whorled solomon's seal drought and heat stress?
Whorled Solomon's Seal is less tolerant of heat and drought than other species. Wilting, brown leaf tips, and premature dormancy indicate dry or sun-stressed conditions. Site in cool shade and mulch generously.