Look what’s growing now.

Silphium perfoliatum – CUP PLANT

Quite robust perennial with typical leaf cups, native to Central-eastern Canada to southeastern United States

In average soils reaching 6′ tall x 2-3′ wide, but in moist loam can reach 8′ (in dry soil only 4′). Large yellow flowers (3″) show up from July till September.  This plant grows to 5 foot and is round in appearance. It sends out flower spikes in mid-August. It spreads by seed so if you do not want to spread cut flower spikes after blooming. If you leave spikes, it will be a natural bird feeder, but you will get seedlings in the spring.

Adaptable and tough plant, which will spread some by rhizomes to wide clumps or colonies.

It can grow in any soil – clay, average, with medium, moist, or wet soil. Once established, it tolerates some drought. It can flop when hit by heavy storm or after very heavy rainfall (especially in full bloom with heavy flowers).

Hardy in zones 3 to 9.

Deer resistant plant, very good pollinator plant – attracts Long-tongued bees, butterflies, skippers. But also, some short-tongued bees, wasps, bee flies, and other kinds of flies also visit the flowers for pollen or nectar. Host plant for larvae of two wasps.

Goldfinches and other smaller bird feed on seeds, drink water from cups and hide and rest in colonies of leaves.

We do have seedlings now for those who want to grow this native plant. Just call or email so we arrange that time for pickup. It takes one to two years to bloom. Good in full sun. All vegetation dies back to ground level each year and sprouts each spring with gusto.

If you are interested in receiving seedlings from this plant, please let us know by calling the office at 586.783.6008.