Cup Plant (Silphium perfoliatum)
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Deciduous Perennial in the Asteraceae Family | |||||||||||||||
Buy Cup Plant | |||||||||||||||
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Available May 9
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Silphium perfoliatum, commonly known as the Cup Plant, is a striking native perennial closely related to the Compass Plant (Silphium laciniatum). The most distinctive feature of the Cup Plant is its unique leaf arrangement, where the stem appears to pierce through the center of the leaf, creating a cup-like formation that can hold water, giving the plant its common name. Reaching heights of 6-8 feet tall, the Cup Plant has an impressive, architectural presence in the garden with its bold foliage and large, yellow, daisy-like flowers that bloom in summer and attract pollinators. Silphium perfoliatum is a low-maintenance and drought-tolerant plant that requires little care once established. It is tolerant of poor, dry soils and does not need regular fertilization. In addition to its ornamental value, the Cup Plant offers valuable ecosystem benefits, providing nectar and pollen for pollinators and serving as a food source for herbivores. Overall, the Cup Plant is a resilient and visually striking native perennial that can be a beautiful and functional addition to a variety of landscape designs. |
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Why Like | Cup Plant (Silphium perfoliatum) is one of the biggest plants you'll see in Crow Island Woods which isn't a tree. The seeds are enjoyed by a variety of birds. | ||||||||||||||
Plant Data | |||||||||||||||
Mature Size | 6 - 8 feet tall. 24 - 36 inches wide. | ||||||||||||||
Sun Exposure | Full Sun - Full Sun | ||||||||||||||
Moisture Tolerance | Medium | ||||||||||||||
Zones | 3a - 7b (Usually hardy to -40° F) | ||||||||||||||
Tags | Deciduous, Full Sun, Illinois Native, Medium, Native to North America, Perennial | ||||||||||||||
Bloom Period | July to September | ||||||||||||||
Flower Color | Yellow
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Animals That Use It |
Seeds: |
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More Info from Experts |
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Photos of This with...Goat's Beard, Solanna Golden Sphere Tickseed, The Rocket Leopard Plant, Aurea Creeping Jenny, Green Carpet Japanese Pachysandra, Alpine Currant, Periwinkle |
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We try very hard to source exactly what you’d like, but sometimes growers run out of plants! While this variety is a great deal at the price shown, we know that it has limited availability. If you want the plant even if it might be more expensive, or in a different size or quantity -- after you place your order, just send us a quick note at help@northshoreplantclub.com. Then, we’ll try to get you some version of this from one of our growers. And if we can’t get it from anywhere, of course, we’ll send a refund!
Plants which are well-adapted to our local climate are most often field-grown (outside). Field-grown plants are generally cheaper and have the advantage of already somewhat acclimated to our cold winters, but that means they’re not artificially far along in the spring and tend to bloom at the normal time in our area.
Spring annuals and tender perennials are typically grown in Greenhouses so they can be ready and luxurious exactly when customers want them. Some perennials are also “forced” into early bloom in greenhouses. In May, there can be a very big difference between field-grown and greenhouse-grown plants of the same type. The latter typically look good right away (so they’re a great choice where that’s important), but we typically pay a premium for it.
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Membership is free, but — since we rely on delivery and local pick-up — you have to live near one of our hubs (or be willing to drive to a site to pick them up). If you live farther away, and would like to help us bring the club to your neighbors, please email helpusgrow@northshoreplantclub.com.
To secure the best prices for club members and make sure we know the current plants available from each nursery, we take orders only a couple of times a month.
Shoot us an email at help@northshoreplantclub.com, and we'll be happy to talk about plants or let you know when it's time to buy them!
We order from a rotating cast of the best nurseries in the Great Lakes region. It looks like we've offered this plant in the past, but the nurseries we're working with this week don't appear to have it in stock at the moment.
Our goal is to bring as many plants together under "one roof" as possible, so we'll try hard to make it available again in the future!