Yankee Blackberry
Rubus pensilvanicus
- Native to:
- Canada, United States
Jaxon Lane,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.,U. S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS),Internet Archive Book Images (www.flickr.com),Patrick Alexander (www.flickr.com) from Las Cruces, NM,Patrick Alexander (www.flickr.com) from Las Cruces, NM,Patrick Alexander (www.flickr.com) from Las Cruces, NM,NPS/Boston Photo Imaging,Newberry, J. S. (John Strong), 1822-1892,Meyncke, Oscar Marion, 1849-1936,Josselyn Botanical Society of Maine,Ladd, Niel Morrow Greenwich Bird Protective Society, Inc
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Rubus
- Species:
- Rubus pensilvanicus
- USDA Symbol:
- RUFR4
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)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★★ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Reported Fauna Sightings
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals, bees, butterflies
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from root crown following fire; often increases in density post-disturbance.
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
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI