Silphium perfoliatum
Full to partial sun
Medium wet soil
6 feet tall
Blooms June to October
Bloom color yellow
Pot Size: 3.5" W x 3.5" L x 5" D
$5.00
Cup Plant
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Our Experience
We recommend planting this in a location where it will be supported by other plants or a fence if you wish for the plants to remain erect when flowering. The plants do get tall so having them droop down is not necessarily a bad thing!
When a flower attracts a lot of butterfly and insect activity we take notice. Cup Plant is a magnet for both large and small butterflies. We noticed that the Grass Skippers love it just as much as the Swallowtails.
All of the action taking place on this plant attracted the attention of a praying mantis who took up residence. I realized it was missing a leg segment after I took the photo and was processing it.
Keystone Species by the Numbers
The numbers provided indicate how many species of Lepidoptera caterpillars use the plant as a host, or how many pollen specialist bees rely on the plant. Information obtained from Garden for Wildlife published by the National Wildlife Federation. Scroll down the page to load more entries.
| Common Name | Genus | Lepidoptera Species | Specialist Bee Species |
|---|---|---|---|
| Aster, Aromatic | Symphyotrichum |
100 |
33 |
| Aster, Calico | Symphyotrichum |
100 |
33 |
| Aster, New England | Symphyotrichum |
100 |
33 |
| Aster, Short’s | Symphyotrichum |
100 |
33 |
| Aster, Sky Blue | Symphyotrichum |
100 |
33 |
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