Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Apocynaceae

Genus:

Amsonia

Species:

Amsonia grandiflora

USDA Symbol:

AMGR4

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb

Height:

90 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

apr,may,jun

Bloom Colors:

blue, lavender

Wildlife Benefits

Bees:

★☆☆☆☆ Documented bee visitation (GBIF)

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:

bees, butterflies

Deer Resistant:

Yes

Fall Color:

yellow, golden

Soil Requirements

Soil Type:

well-drained, sandy or loamy soil

pH:

6.0 - 7.5 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to rocky, open woodlands

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

14–30 days

Notes:

Seeds benefit from cold stratification. Fresh seed germinates more readily than stored seed.

The above propagation data sourced from Claude AI