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    • Photo of Silphium integrifolium by Arrowhead Alpines

    Photo by Arrowhead Alpines

    Used with permission, all rights reserved

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    Silphium integrifolium

    Also Known As

    • Whole-Leaf Rosinweed

    Plant type

    perennial

    size

    • H: 2'-5'
    • W: 24"-36"

    planting zones

    • 4a-8b

    More Options

    Silphium integrifolium plant details

    Silphium integrifolium is a broadleaf deciduous perennial with green foliage. In summer yellow flowers emerge. Attracts bees making it an excellent addition to pollinator gardens. Grows well with sun and even moisture - regular water. Does well in average, clay and gritty soil.

    CHARACTERISTICS OF Silphium integrifolium

    Plant type: perennial
    Plant family: lamiaceae
    Foliage: deciduous green
    Mature size: 24 IN - 36 IN - wide, 2 FT - 5 FT - tall
    Flowers: yellow blooms in summer

    GROWING CONDITIONS for Silphium integrifolium

    USDA Zones: 4a - 8b
    Sun exposure: sun
    Watering frequency: even moisture - regular
    Soil needs: average, clay and gritty

    Nursery contributed plant descriptions

    At 2-5', this is the shortest of the Silphiums and easier to place in the border, where it makes a fine display of large, bright-yellow daisy-like flowers; an undemanding prairie wildflower for border or naturalizing. S/M

    By: Forestfarm

    Bursting with optimism, this grandiose Midwestern native and Sunflower relative pushes a colony of stout and singular, erect stalks skyward. Coarse textured, rough-hewn lanceolate leaves march up purple-tinged stems, which branch out near their tops to deliver vivacious, 3 in. wide yellow daisies late in the season. Beloved by songbirds and butterflies, long blooming and undaunted by heavy clay, Silphium integrifolium is undeniably tough and well suited for natural areas or borders alongside tall perennials such as Phlox 'David' or Salvia 'Blue Ensign'.

    By: Digging Dog Nursery

    Shortest of the magnificent Silphium genus, Rosinweed displays its bright yellow flowers on two to six foot tall stems in late summer. Grows easily from seed, and is at home on a wide variety of soils, from moderately dry to moist. Excellent for tough clay soils. Birds love the seeds! Hardy to Zones 4 - 8.

    By: Prairie Nursery

    Love siphium, but don't have space for the really GIANT ones? This one is merely 3-5 feet tall, with the same large, dramatic leaves and relatively large yellow sunflower-like blooms in mid to late summer.Interesting fact, while googling about I found reference to silphium producing a fragrant resin while in flower that can be used as chewing gum. Who knew? Zone 5 - Joseph

    By: Arrowhead Alpines

    Gardening facts about Silphium integrifolium plant

    How to Grow Silphium integrifolium

    • Sun Exposure

      • sun

    • Water Needs

      • even moisture - regular

    • Soil Needs

      • clay
      • average
      • gritty

    Features

    • Foliage Color

      • green

    • Flower Color

      • yellow

    • Wildlife

      • bees

    • Flower Season

      • summer

    • Foliage Season

      • deciduous

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