Silphium integrifolium (Rosin Weed)
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Silphium integrifolium

Rosin Weed

Tall stems topped with yellow daisy-like flowers that attract bees and parasitic wasps. Foliage varies from narrow to broad and round, toothless or toothed and alternate, opposite or whorled. Prefers dry soils.

Height: 4-6 ft
Width: 24-36 in
Soil Conditions: Moist/Well Drained
Flower Color: Yellow
Bloom Time: July,August,September,October
Hardiness Zone: 4 TO 8
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Characteristics & Attributes for Silphium integrifolium

Attracts Wildlife

Attracts Butterflies
Attracts Pollinators
Attracts Wildlife

Critter Resistance

Rabbit Resistant

Plant Habit

Upright

Light Conditions

Sun

Native Plant Community

Dry Prairie
Mesic Prairie

Bloom Time

July
August
September
October

Flower Color

Yellow

Flower Hue

Medium

Flower Height

4' to 6'

Flower Type

Head

Foliage Color

Green

Leaf Texture

Coarse

Prune Time

Jan/Feb/March

Flower Form

Single

Growth Rate

Fast