Prickly Rose

Rosa acicularis

Native to:
Canada, China, Japan, Kazakhstan, Korea, Russia, Sweden, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rosaceae
Genus:
Rosa
Species:
Rosa acicularis
USDA Symbol:
ROAC

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Subshrub
Height:
200 cm
Light Requirements:
Full Sun,Part Shade
Drought Tolerance:
Medium
Bloom Months:
jun,jul
Bloom Colors:
pink
Landscaping Shrub:
Yes

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)

Reported Fauna Sightings

Bees: Confusing bumble bee (Bombus perplexus), Tri-colored bumble bee (Bombus ternarius)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Fragrant:
Yes
Fall Color:
red, orange

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers organic matter-rich soils

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
30–90 days
Notes:
Seeds benefit from cold stratification for 60-90 days to break dormancy.

Pre-treatment: Seeds are placed in cold moist stratification for 90 days

Establishment: R. acicularis is found in boreal coniferous forests south to Idaho, Montana through the Rocky mountains to New Mexico

Source: npn.rngr.net

ORGHPS Germination Guide: Requires scarification. Nick or rub between sheets of sandpaper. Requires soaking. Place in warm water until seeds swell, usually 24-48 hours. Discard water and any seeds that remain floating. Pulpy coat inhibits germination. Remove by soaking and rinsing in clean water for approximately 7 days. Discard water. * soak in hot water for 24 hours to scarify; plant at 32°C for 2-3 weeks, then 4°C for 4 months

Source: Ontario Rock Garden & Hardy Plant Society

Where to Buy

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