Audubon® Rosin Weed Tree
Audubon® Rosin Weed Leaf
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Audubon® Rosin Weed Tree
Audubon® Rosin Weed Leaf
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Audubon® Rosin Weed Additional Product Shot 2370
Audubon® Rosin Weed Additional Product Shot 2484
Audubon® Rosin Weed Additional Product Shot 2985

Growth Facts

Audubon® Rosin Weed

Silphium integrifolium
$39.00
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At four to six feet tall, Rosin Weed is the smallest of the Silphiums, a group of Sunflower lookalikes that includes Compass Plant and Prairie Dock. Nevertheless, it is a substantial plant. This sturdy, hardy Spirit captures the rugged beauty of the tallgrass prairie, where it was once native, and it will lend a touch of wildness to your backyard beds and borders as well. Your local wildlife will appreciate Rosin Weed, too! Monarchs, Swallowtails, and Painted Lady Butterflies will love the nectar in the yellow summer Daisy flowers. In fall and winter, Goldfinches will enjoy the seeds.

May Benefit & Attract: Finches

Take Birds Under Your Wing

New! Introducing our bird-friendly collection of Audubon® Native Plants & Trees

  • Better for Birds, 100% Neonic-Free
  • Not Available in non-native regions, states or counties (see Native Regions map)

Bower & Branch is proud to grow Audubon® Native Plants for Birds in partnership with the National Audubon Society to help birds and other wildlife thrive.

  • The National Audubon Society protects birds and the places they need, today and tomorrow
  • This bird-friendly native plant provides food and shelter for local and migrating birds and other wildlife
  • Your purchase and planting of this native flora directly supports Audubon’s conservation mission and impact
  • Learn how you can help birds in your home and community through Audubon’s Plants for Birds program
  • Audubon Native Plants & Trees are free of neonicotinoids and exclusively grown by Bower & Branch

Audubon® is a licensed and registered trademark of the National Audubon Society. All rights reserved.

Growth Facts

Recommended by Our Growers

The Story

Rosin Weed is native to the midsection of our country, from Nebraska to Michigan in the North and Texas to Alabama in the South. An inhabitant of the majestic tallgrass prairie that is mostly gone now, it once stood shoulder-to-shoulder with Big Bluestem and other grasses and prairie wildflowers. Rosin Weed was well-adapted to life on the prairie, with deep roots that could delve down 10 or 12 feet. When fire struck, it would simply regenerate itself from the massive rootstock. Drought was no problem, either, once the plant was established.

The Details

Rosin Weed gets its name from the sticky substance found inside the stems. Native American kids used to scrape off this rosin and use it as chewing gum. You can try it, too—just don’t expect it to taste like Juicy Fruit! (It tastes more like Pine Tree.)

How to Grow

Rosin Weed prefers deep, loamy soil that never gets extremely wet or extremely dry. It wants full sun. This species is stockier and stronger than other Silphiums, so it will not need staking. It is unlikely to flop. It’s also faster-growing than other Silphiums, though it does still take a few years to bulk up. This plant forms several long, deep roots over time and will become difficult to transplant. Choose its position carefully and then leave it be. Maintenance is simple for Rosin Weed. Leave the seeds for winter-resident birds, then cut the whole plant down in early spring.

Size Guide

Size Guide Scale

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Audubon® Rosin Weed Tree
Audubon® Rosin Weed Leaf
Audubon® Rosin Weed Additional Product Shot 2370
Audubon® Rosin Weed Additional Product Shot 2484
Audubon® Rosin Weed Additional Product Shot 2985