Northern Wildflowers Cup Plant Pkg.

Approximately 20 seeds per pack, covers 20 ft²

Cup plant (Silphium perfoliatum) adds a lot of wildlife value to the garden. The plant's leaf bases form cups which provide water to birds and insects, butterflies regularly visit the flowers, and birds feed on their fall seeds. Cup plant is easy to grow from seed, and although it is mostly native to Southern Ontario, it does well in zones 3-8.

Height:  3-6 feet tall
Plant in: Full Sun to Part Shade in Dry to Wet Site
Blooms:  July to September
Zone:  4-8

Wet and cold stratification is required. Mix seeds with moist substrate (vermiculite, perlite or moss) and place in a plastic bag and refrigerate for 6-8 weeks. Sow seed at 1/8 inch depth. Do not let seedlings dry out while they are establishing.

OR

Sow directly outdoors in late fall to overwinter.