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Mason Brock (Masebrock) wikimedia.org |
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| Andrew C wikimedia.org |
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Summary
Physical Characteristics
Silphium trifoliatum is a PERENNIAL growing to 1.8 m (6ft) by 1.8 m (6ft) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 5. The flowers are pollinated by Bees, Insects.
It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
No synonyms are recorded for this name.
Plant Habitats
Edible Uses
Dave Jacke in his book Edible Forest Gardens has noted that this plant is edible although we have been unable to find any confirmation. Other Silphium species are edible for example Silphium integrifolium produces an protein-oil staple Crop and Silphium laciniatum resin is used as a chewing gum to sweeten the breath[4, 61, 105, 257].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
None known
References More on Medicinal Uses
The Bookshop: Edible Plant Books
Our Latest books on Perennial Plants For Food Forests and Permaculture Gardens in paperback or digital formats.
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Food Forest Plants for Hotter Conditions: 250+ Plants For Tropical Food Forests & Permaculture Gardens.
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Plants for Your Food Forest: 500 Plants for Temperate Food Forests & Permaculture Gardens.
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Other Uses
Invertebrates shelter: beneficial for insects and other arthropods. Nectary: provides nectar or pollen for beneficial insects [1-2]. Garden Ornamental. More manageable than most perennial sunflowers as it spreads slowly, and it is not known to be allelopathic. Adapts well to prairies, wildflower/native plant gardens, naturalized areas, meadows or moist, open woodland areas. Attracts birds and butterflies
Special Uses
References More on Other Uses
Cultivation details
A tall perennial forb for full to partial shade. Leaves are attached to the stem in a 'whorled' formation. Sun Exposure: Full, Partial. Soil Moisture: Medium, Medium-Dry. Drought-tolerant; suitable for xeriscaping. Bloom Time: July to September. Bloom Color: Yellow. For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. The plant growth habit is a runner spreading indefinitely by rhizomes or stolons [1-2].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
The PFAF Bookshop
Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees,Edible Shrubs, Woodland Gardening, and Temperate Food Forest Plants. Our new book is Food Forest Plants For Hotter Conditions (Tropical and Sub-Tropical).
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Plant Propagation
Seed. Plants may be slow to establish in the garden, particularly when grown from seed. Plants often self-seed in optimum growing conditions. Division.
Other Names
If available other names are mentioned here
Whorled Rosin Weed
Native Range
NORTHERN AMERICA: United States (Indiana, New York, Ohio, Pennsylvania, West Virginia, Illinois, Alabama, Kentucky, Louisiana, Maryland, North Carolina, South Carolina, Virginia, Mississippi, Tennessee)
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
None Known
Conservation Status
IUCN Red List of Threatened Plants Status : Not Listed.
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
L.
Botanical References
Links / References
For a list of references used on this page please go here
Readers comment
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Subject : Silphium trifoliatum
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