Silphium perfoliatum (Cup Plant)
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Silphium perfoliatum (NGN)

Cup Plant

Yellow flowers that attract bees and parasitic wasps on branches up to 10'. Pairs of coarse-toothed leaves meet at and surround the square stem, forming a cup or reservoir that holds water, attracting birds and insects. Prefers moist to wet soils.
Height: 6-8 ft
Width: 24-36 in
Soil Conditions: Moist/Well Drained
Flower Color: Yellow
Bloom Time: July,August,September
Hardiness Zone: 3 TO 7
ITEM # CROP IMAGE SIZE CURRENT AVAIL
22678.1G #1 249
22678.38 38 Flat 10
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Characteristics & Attributes

Attributes
Fall Color
Attracts Wildlife
Attracts Butterflies
Attracts Wildlife
Plant Habit
Upright
Light Conditions
Sun
Native Plant Community
Mesic Prairie
Flower Color
Yellow
Flower Hue
Light
Flower Height
6' to 8'
Flower Type
Head
Foliage Color
Green
Leaf Texture
Coarse
Prune Time
Jan/Feb/March
Flower Form
Single
Flower Size
2"
Growth Rate
Fast

Possible Substitution Plants

Silphium terebinthinaceum
Silphium laciniatum