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A picture of a Cup Plant

Cup Plant

Silphium perfoliatum

Also known as

Indian Cup, Ragged Cup, Carpenter Weed, Cup Rosin Weed, Indian Cup-Plant, Indian-Gum, Squarestem Rosinweed

Full Sun
Light watering
Frost Hardy

H7

RHS hardiness

-20°C

Minimum temperature

Expected size

Height
Spread

2.5m

Max

1m

1.5m

Min

50cm

5 years to reach maturity

Flowering

    • spring
    • summer
    • autumn
    • winter

    Special features of Cup Plant

    Attracts butterflies

    Attracts bees