• Silphium integrifolium (Rosinweed) native plant in bloom
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Silphium integrifolium (Rosinweed)

Silphium integrifolium (Rosinweed)

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Rosinweed (Silphium integrifolium) produces yellow, sunflowerlike blooms on sturdy upright stems from summer into fall. Rough leaves occur along the stems rather than forming only a large basal rosette. Its clumping form suits a prairie garden or a larger sunny perennial bed.

Full sun and well-drained soil are the best starting point. Average to dry conditions are suitable, and established plants tolerate drought. It can grow in several soil textures without requiring the rich, consistently moist conditions that produce excessive growth in some tall prairie plants.

A taproot and short rhizomes support the plant, with new growth developing around the clump. It does not have the same strongly spreading habit as every other Silphium, though the mature plant still needs substantial space. Bees and butterflies visit the flowers. Place it among other upright perennials rather than crowding small plants beneath its coarse foliage.

Plant specifications & ecological relationships

Key growing facts

Sunlight Full sun
Soil moisture Mesic to dry
Height 3-5 ft
Bloom season Mid-summer to fall

Native landscape companions

For full sun and dry-mesic soil, consider these native plants alongside Silphium integrifolium:

Companion plant Height
Rattlesnake Master (Eryngium yuccifolium) 2-5 ft
Small Yellow Fox Sedge (Carex annectens) 18 to 40 inches
Button Blazing Star, Rough Blazing Star (Liatris aspera) 2–5 ft
Round-headed Bush Clover (Lespedeza capitata) 2-5 ft

These landscape suggestions combine overlapping growing needs with documented plant associations. Match soil, seasonal wetness and mature spread to your site. Remnant records are described separately under Plant communities & associates.

Show / hide ▾Growing & planting details
Growth habit Clump-forming perennial with short rhizomes
Root form Taproot; Rhizomes
Soil pH Published cultivation guidance lists neutral soil conditions; no optimal numeric interval is established.
Cultivation hardiness zones Zones 4a–8b (general cultivation guidance)
Drought tolerance Drought tolerance reported in cultivation guidance; establishment needs and duration are not specified.

Plant identification & seed reference

Botanical name Silphium integrifolium
Other common names rosinweed; Entire-Leaf Rosinweed; Prairie Rosinweed; Rosinweed; Whole-Leaf Rosinweed
Plant family Asteraceae

Plant characteristics

Silphium integrifolium (Rosinweed) is one of the mainstays of the tallgrass prairie! Rosinweed is named after the plant's sticky rosin once used by Native Americans as chewing gum, but from me, I'm fine "sticking" with my modern-day gum :) Reaching around five feet high, a loose cluster of yellow daisy-like flowers forms on single stems beginning in June that tower over the prairie. It thrives in prairie situations in almost any soil and one establish they are extremely drought tolerant. Silphium integrifolium contains seeds that are very attractive to goldfinches and its flowers are attractive to a wide variety of pollinator species.

  • Flower Color yellow
  • Flower Time July, August, September
    • Show / hide ▾Plant communities & associates

    Illinois community record

    Dry-mesic sand prairie — historical record

    Recorded in 1976 at Short Pioneer Cemetery Prairie, a small sand-prairie remnant in Grundy County. This plant was not relocated during the 2005–2006 survey; its present status is unassessed.

    This is a whole-remnant record; the plant’s exact microsite and neighboring species were not established.

    Chicago-region plant communities

    Sand Ridge Savanna, Will County (2007–2009 study). Recorded in: wet-mesic sand prairie.

    Wet-mesic sand prairie — selected native associates: Carex pensylvanica, Sorghastrum nutans, Parthenium integrifolium.

    These records come from sampled communities within the preserve.

    Illinois plant communities

    Mesic black-soil prairie — central Illinois

    Recorded at Loda Cemetery Prairie (Iroquois County), Prospect Cemetery Prairie (Ford County), Weston Cemetery Prairie (McLean County). INHS identifies these sites as remnants of this community.

    Selected native plants from the same remnant records:

    These inventories include edges and disturbed patches. Shared remnant records do not establish that every plant grows together in one microsite.

    Green River community records

    Wet sand prairie: Lee County, Illinois (2006). Selected catalog plants recorded in this community: Asclepias syriaca; Bolboschoenus fluviatilis; Calamagrostis canadensis; Helianthus grosseserratus; Onoclea sensibilis; Pycnanthemum virginianum.

    The study site includes restoration plantings. Community records do not establish county-native origin or a seed-mix recipe.

    North Eldred — hill prairie

    Native hill-prairie stand surveyed in 1949–1951. These dated records do not establish presence today.

    Other native plants recorded in this surveyed community: Amorpha canescens, Bouteloua curtipendula, Ceanothus americanus, Echinacea pallida, Euphorbia corollata, Liatris aspera, Liatris cylindracea, Lobelia spicata, Monarda fistulosa, Phlox pilosa.

    Evers 1955, Table 14. Selected associates from the same community; records do not show immediate neighbors or prescribe planting ratios.

    Valmeyer — hill prairie

    Native hill-prairie stand surveyed in 1949–1951. These dated records do not establish presence today.

    Other native plants recorded in this surveyed community: Amorpha canescens, Bouteloua curtipendula, Ceanothus americanus, Echinacea pallida, Euphorbia corollata, Heuchera richardsonii, Liatris aspera, Liatris cylindracea, Monarda bradburiana, Phlox pilosa.

    Evers 1955, Table 14. Selected associates from the same community; records do not show immediate neighbors or prescribe planting ratios.

    Chautauqua — hill prairie

    Native hill-prairie stand surveyed in 1949–1951. These dated records do not establish presence today.

    Other native plants recorded in this surveyed community: Amorpha canescens, Bouteloua curtipendula, Camassia scilloides, Echinacea pallida, Euphorbia corollata, Heuchera richardsonii, Juncus dudleyi, Liatris cylindracea, Monarda fistulosa, Ruellia humilis.

    Evers 1955, Table 14. Selected associates from the same community; records do not show immediate neighbors or prescribe planting ratios.

    Show / hide ▾Native range & C-value

    State nativity describes a broad range. Use the Chicago-region assessment for local context; a state listing does not establish county nativity.

    Wetland indicator — NWPL 2022 Midwest FACU
    C-value — Chicago region, Flora 2017 5
    Chicago-region native — Flora 2017 Yes
    Native range — U.S. states Alabama; Arkansas; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Michigan; Mississippi; Missouri; Nebraska; New Mexico; Oklahoma; South Dakota; Tennessee; Texas; Wisconsin; Wyoming
    County nativity Grundy County, Illinois — historical prairie-remnant record (1976); not relocated in the 2005–2006 survey. County coverage is partial.
    Show / hide ▾Pollinators & wildlife

    Caterpillars & other plant-feeding insects

    This plant has published caterpillar host records for the butterflies and moths listed below. These are larval feeding relationships, separate from adult nectar visits. The records span a North American literature compilation and do not establish that every insect occurs locally or uses only this plant.

    Moths

    • Papaipema baptisiae — Wild Indigo Borer, Indigo Stem Borer
    • Tebenna silphiella — Rosinweed Moth
    Show / hide ▾Frequently asked questions

    What are the ideal growing conditions for Rosinweed?
    Light: Full sun. Soil moisture: Mesic to dry.

    Is Rosinweed deer and herbivore resistant?
    Species-specific deer resistance has not been verified here. Even plants described as resistant may be browsed. Use physical protection where deer damage is a concern.

    When should I expect Rosinweed to bloom?
    Typical flowering period: Mid-summer to fall. Timing varies with location and weather.

    Show / hide ▾Sources & ecological notes

    Landscape companion selection: Natural Communities compared the growing requirements shown on these species pages with selected source records: Dry-mesic sand prairie — Short Pioneer historical remnant inventory — Chicago region — Grundy County, Illinois; Mesic black-soil prairie — Loda Cemetery Prairie — Central Illinois; Hill prairie — Illinois. The shortlist is a planting-design inference. A shared record does not establish adjacency, identical soil requirements, local seed origin, or a tested planting combination. Regional synthesis records retain their documented focal-to-associate scope.

    Will County community records: Phillippe, Marcum & Ebinger (2012), Sand Ridge Savanna vegetation, Tables 1–5. Selected species and habitat facts independently organized; no open license is asserted for the article. Sampled communities are kept separate from the preserve’s seeded field.

    Illinois communities & local records: INHS: Loda, Prospect and Weston prairie records; Ebinger et al.: Green River communities (2009).

    Native range & ecological ratings: Flora of the Chicago Region (2017), via Universal FQA; USACE Chicago FQA (2017); Kew WCVP / Plants of the World Online; USACE National Wetland Plant List.

    Growing conditions & other references: Illinois Wildflowers, John Hilty; NC State Extension Plant Toolbox.

    Wildlife records: Shropshire & Tallamy: caterpillar hosts (2025).

    Native range does not identify the origin of the seed or plants offered. Community and wildlife records apply to the locations and conditions described.

    Research notes & credits

    USACE/ERDC fqadata — Chicago Region FQA 2017. Herman, B., Sliwinski, R. & Whitaker, S. (2017), Chicago Region FQA Calculator; distributed by USACE/ERDC in fqadata under CC0. Values may differ from Flora of the Chicago Region (2017). CC0 dedication. Retained for comparison; the displayed C-value follows Flora database 80.

    Range data: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew; 4 June 2026 release, accessed 7 September 2026. © The Trustees of the Royal Botanic Gardens, Kew. CC BY 3.0; selected and reformatted. Kew cannot warrant the quality or accuracy of these data. This use has no Kew endorsement.

    Caterpillar host records: Shropshire, K.J. & Tallamy, D.W. (2025), Lepidoptera of North America, Supplement 1. Contains information from this database made available under the Open Database License (ODbL 1.0). Natural Communities selected species-level records and screened source qualifications. The complete selection and transformation instructions for this page are available below under the same license.

    Community records adapted from Ebinger et al. (2009), Table 3, CC BY 4.0; selected facts reorganized by Natural Communities.

    Flora rating attribution: Kenneth Johnson (2018), Flora of the Chicago Region UFQA Database, following Gerould Wilhelm and Laura Rericha (2017), Flora of the Chicago Region: A Floristic and Ecological Synthesis. Individual rating facts are presented with original commentary; the calculator’s software license is not treated as a license for the underlying Flora publication.

    Caterpillar research records

    Plant: Silphium integrifolium

    Record scope: Host literature synthesis; no county nativity or local insect occurrence inferred.

    Shropshire & Tallamy (2025) · Original research dataset · Reuse license: ODbL-1.0

    Plant names in the source Source insect record IDs
    Silphium integrifolium 209259, 212315

    How these records were selected

    To reproduce this selection, use the “UDELep May 2025” worksheet in the original research dataset.

    1. Match the insect record IDs above to column A (UDLepID). Within each table row, pair every listed insect ID with every listed source plant name.
    2. Use the first two words in column H for the insect’s scientific name, column E for its common name, and column AB for its source category.
    3. Treat the selected pairs as reported caterpillar host records. Keep all other source fields unchanged and outside this selected table. Include no other rows or host pairs.
    4. Group butterflies and skippers together, and the other categories as moths. Retain the source’s exotic-category labels and sort display names by scientific insect name.

    Historical county and community record: Phillippe, Marcum, Busemeyer & Ebinger (2010), p. 8, reporting the 1976 inventory, with IDNR remnant-site context. The original 1976 survey was not examined. Remnant origin is inferred from the historical prairie record; modern seeded areas are not used as evidence. Later restoration history is documented separately. Only selected factual records are reused; no open license is claimed for the paper.

    Growing guidance: Illinois Extension — Keeping deer out of the yard and garden. Selected facts in original wording. General deer advice is not a species resistance rating.

    Additional community records: Evers (1955), Hill Prairies of Illinois. Hill-prairie records adapted from Evers (1955), © University of Illinois Board of Trustees, CC BY 4.0. Selected facts and taxonomic links; source spellings and historical survey dates retained.

    Plant Shipping & Care

    We want to ensure that our customers get what they want, a native backyard oasis. To do that, we need to follow a few simple guidelines and give you some information and pointers to make sure you get your plants delivered in a healthy state.

    As a reminder, you will receive an email to confirm your pickup or shipping window just before the plants are ready. See Order Fulfillment below for seasonal fulfillment windows.

     

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    • Pickup locations and dates are confirmed by email. Please wait for confirmation before traveling to a pickup site. Our offices are not retail stores or nursery pickup locations.

     

    Order Fulfilment - When Your Plants or Other Items Will Be Ready

    We take orders all year long and seed is shipped all year, but we only provide the plants to you in certain fulfillment windows to ensure healthy plants.

    Wholesale Orders

    • Shipped or are Ready For Pick Up As Requested.

     

    Retail & Website Orders

    • Seed Typically Ships Out Within One Week Of Order All Year Long
    • Typically, single species flats ship when ready, sometimes as soon as early to mid-April (depends on weather) through early-October.
    • Mixed species kits are batched and shipped as indicated on the product page.
    • If a plant order is placed while outside of the plant fulfillment window your plants will be reserved through your payment, however, the order will not be fulfilled and shipped until the following spring. We don't want to provide you plants when they won't be happy during the cold winter months. 
    • Early in the spring and later in the fall certain species may be dormant or partially dormant with brown leaves, however they will return to grow healthy next growing season.
    • Your order may arrive in several different shipments.
    • If certain plants within an order will not be available until a later date, we may choose to hold the full order until all are ready.  In certain circumstances, we may choose to send them in two separate shipments 
    • Fulfillment is always dependent upon plant availability.  We try our best but sometimes plants do not overwinter well and perish.  If a plant is on back order you will receive an email indicating the estimated shipping date.  If we can not provide the plant we will first notify you and give you an option of substitution or a refund of that individual species.
    • Plants are typically only packaged and shipped on Mondays to ensure they do not sit in the harsh delivery facility for extended periods of time over the weekend. You will receive a confirmation email once your delivery has been shipped and to estimate your delivery date.
    • Apparel & accessories are ready typically within one to two weeks. See product page for holiday shipping.

    Where We Ship

     

     

          What to Expect When Receiving Your Delivery

          • Your plants will be packaged with the utmost care
          • We will need to cut back certain plants prior to shipping. This seems counter-intuitive, however, the fewer leaves the less water the plants can lose during shipping, resulting in healthier plants for you. This also enables the plants to fit within the protective packaging and shipped safely.

           

             Shipments

            • Larger plant shipments will look similar to the picture below with a tray of your plants and a cardboard box to protect them during shipping.

             

             

            What to Do With Your Plants After  Receiving Your Delivery

            • Unpack your order IMMEDIATELY
            • Inspect for damage and report any issues immediately to Natives@NaturalCommunities.net
            • Water your plants
            • Install your plants as quickly as possible and water the entire garden area thoroughly
            • If you cannot install your plants immediately
              • Some plants may not be in a container, put them into some kind of a container such as a paper cup with loose soil until installation
              • Make sure each plant is receiving the appropriate amount of light.
              • Continue to water daily each morning and possibly again in the afternoon
              • No additional fertilizer is needed
            How to install native plugs
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