Upright herbaceous perennial growing 1-2m high, with yellow flowers. Mid-yellow flowers on a very tall almost glaucous green plant with perfoliate leaves Aug-Oct, smart seed heads, 2-3m. Height 2m (6') Spread 1m (3') Another yellow daisy (we love ’em), tall, self-supporting, with interesting clasping leaves around square stems. Size: 2 Ltr. Return to index in size order The tall stately plants are crowned with yellow daisies in summer for 4-6 weeks. Award of Garden Merit Silphium perfoliatum. Cup plant. CHECK AVAILABILITY. H7. Cup Plant, Silphium perfoliatum This vintage print is from 1954, you will receive the original sixty year old illustration page from a beautiful old book on flowers. Description. In stock for delivery More Info: In stock for collection More Info: Product Details. Silphium perfoliatum L., fam. & J.Pres, known by the common names Sylph or Cap plant, belongs to the genus Silphium L., which includes 23 species. Aug-Sept. 2m. This quirky individual has sturdy square stems and large opposite leaves that are joined at the base. Return to index in alphabetical order. Most perfoliate leaves evolved when a pair of opposite leaves gradually fused together. It is native to North America, East Coast of United States of America and Canada. Bright yellow daisies on tall stems. Find help and information on Silphium 'Maya' Cup plant Indian cup Cup rosin weed 'JS Maya' perfoliatum 'J.S. One of the very best attractors of beneficial insects like hoverflies which will eat your aphid pests. A lovely tall cottage garden plant for a touch of colour during the early autumn months. Asteraceae Bercht. Click here to find out more. Maya' Rosinweed, including varieties and pruning advice. There is printing on the reverse, it wont show if backed in black when Silphium perfoliatum Our Ref No : 14982. £6.99 Stock : 9. datasets have provided data to the NBN Atlas for this species.. 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