Bluestarnon-native
Amsonia 'Blue Ice' · Apocynaceae
Field guide
'Blue Ice' is a compact bluestar 12–18 in. tall with dark lavender-blue spring flowers and willow-like foliage turning gold in fall. Discovered among seedlings at White Flower Farm, Mt. Cuba Center's 10-year Amsonia trial concluded it is a horticulturally superior form of the non-native A. orientalis rather than a US native, and recorded it as one of the two lowest performers for pollinator visitation—a single insect on a single day. It remains a tough, deer-resistant, long-lived edger.
Gardener's notes
It's a handsome, bulletproof edger—just know it's not the native bluestar despite the labels, and pollinators largely ignore it. If you want the wildlife payoff, plant the ferny native Amsonia hubrichtii instead. Either way, cut the hollow stems back in late winter but leave a hand's-width of stubble for stem-nesting bees.
Ecology
- Pollinators: VERY LOW — Mt. Cuba recorded a single insect on one day across weeks of observation
Care this season
- Standing stems: leave them — insects overwinter inside.
- Toxicity: milky sap is a skin irritant
Meaning
Genus honors Dr. John Amson, a colonial Williamsburg, VA physician. Soft blue spring haze, golden autumn foliage—loved for no-fuss longevity.
Sources
- Amsonia trial report — Mt. Cuba Center
- Amsonia — NC State Extension
Notes: ECOLOGICAL UNDERPERFORMER (reconsider): Mt. Cuba confirmed it synonymous with European A. orientalis, not native; one of the two lowest pollinator performers in trial. Recommend native A. hubrichtii substitute. Identity confident; ecological value flagged in CLAUDE.md.