Island Blackberry
Rubus pensilvanicus
- Native to:
- United States
Douglas Goldman,Douglas Goldman,Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 279. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc.,John B. (Dendroica cerulea) (www.flickr.com),User:SB_Johnny,User:SB_Johnny,Jacob Malcom (www.inaturalist.org),Nate Martineau (www.inaturalist.org),Jacob Malcom (www.inaturalist.org),Nate Martineau (www.inaturalist.org),Nate Martineau (www.inaturalist.org),Nate Martineau (www.inaturalist.org)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Rubus
- Species:
- Rubus pensilvanicus
- USDA Symbol:
- RUIN4
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Subshrub
- Height:
- 200 cm
- Light Requirements:
- Full Sun,Part Shade,Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- may,jun,jul
- Bloom Colors:
- white
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★★ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Tischeria aenea
Reported Fauna Sightings
Moths:Coptotriche aenea
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals, butterflies, bees
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from root crown and rhizomes following fire; often increases in abundance in post-fire environments.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 90–120 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 30–90 days
- Notes:
- Seeds have hard seed coat and embryo dormancy; scarification followed by cold stratification improves germination. Germination can be erratic.
The above propagation data sourced from Claude AI