Kinnikinnick

Arctostaphylos uva-ursi

Native to:
Albania, Aleutian Is., Austria, Baltic States, Belarus, Bulgaria, Canada, Czechia-Slovakia, Denmark, Finland, France, Germany, Greece, Greenland, Iceland, Ireland, Italy, Labrador, Netherlands, Norway, NW. Balkan Pen., Poland, Prince Edward I., Romania, Russia, Spain, Sweden, Switzerland, Ukraine, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Ericaceae
Genus:
Arctostaphylos
Species:
Arctostaphylos uva-ursi
USDA Symbol:
ARUV

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Subshrub
Height:
30 cm
Light Requirements:
Full Sun,Part Shade,Shade
Drought Tolerance:
High
Bloom Months:
apr,may,jun
Bloom Colors:
white, pink
Ground Cover:
Yes
Evergreen Shrub:
Yes
Landscaping Shrub:
Yes

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)
Pollen Specialist Bee Keystone:
★★☆☆☆ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Aethaloida packardaria, black-banded epelis (Epelis truncataria), Cocoa Emerald (Ematurga amitaria), Elegant Sheep Moth (Hemileuca eglanterina), Epinotia arctostaphylana, Mendocino saturnia moth (Saturnia mendocino), Rhopobota finitimana, Brown Elfin (Incisalia augustinus), Freija fritillary (Clossiana freija), Hoary Elfin (Incisalia polia)

Reported Fauna Sightings

Bees: Two-form bumble bee (Bombus bifarius), Yellow-faced bumble bee (Bombus vosnesenskii) Butterflies:Brown Elfin (Callophrys augustinus), Hoary Elfin (Callophrys polios)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals, grouse
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from underground rhizomes after fire. Common in fire-adapted ecosystems but does not require fire for reproduction.

Soil Requirements

Soil Type:
sandy, acidic, nutrient-poor soil
pH:
4.5 - 6.0 (acidic to slightly acidic)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers open, sunny locations with poor soil fertility

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
30–180 days
Notes:
Seeds have hard seed coats and double dormancy requiring both scarification and cold stratification. Germination is often slow and erratic even with treatment.

The above propagation data sourced from Claude AI

Pre-treatment: For seeds: Scarification with boiling water or sulfuric acid, followed by stratification at room temperature for 2-4 months and cold storage for 2-3 months. For cuttings: Trim to 10-15 cm lengths, remove one third leaves from base, treat with 2,000-3,000 ppm liquid IBA, and place in mistbed with bottom heat at 21C.

Establishment: Cuttings have higher germination rates than seeds. For best results, use donor branches that are prostrate to the soil line or slightly buried by duff. These often have pre-formed root initials and enough stored stem tissue reserves to survive overwintering conditions. Time of collection for cuttings reflects poor access to this ground cover in winter months more than anything else.

Source: npn.rngr.net

ORGHPS Germination Guide: Sow immediately, Either the viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience. Sow at 4°C for 3 months, then place @ 20°C for 3 months. 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. * immerse in boiling water for 20 seconds; protect well first winter

Source: Ontario Rock Garden & Hardy Plant Society