Vernonia noveboracensis
New York ironweed
Flower Color
Description
A tall, herbaceous perennial to 2m with stiff, upright stems carrying narrow, pointed leaves and topped with open, branched clusters of purple, thistle-like flowers in late summer and early autumn
Mature Height
2.5m
Mature Spread
1m
Plant Characteristics
Foliage
Deciduous
Growth Habit
Upright
Growth Speed
Fast · 0.7 m/yr
Soil Texture
ChalkClayLoam
Soil pH
AcidAlkalineNeutral
Soil Moisture
Moist but well-drainedPoorly-drained
Hardiness (RHS)
H9
Hardiness (USDA)
Zones 5-8
Flowering Season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Key Features
Cottage and informal gardenPrairie plantingFlower borders and beds