Labrador Tea

Rhododendron columbianum

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Ericaceae
Genus:
Rhododendron
Species:
Rhododendron columbianum
USDA Symbol:
LECO8

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub
Height:
200 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
may,jun,jul
Bloom Colors:
white, cream, pink
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)

Host Plant for Caterpillars

🛑Phyllonorycter ledella (Phyllonorycter ledella)

Reported Fauna Sightings

Bees: Black-tailed bumble bee (Bombus melanopygus), Fuzzy-horned bumble bee (Bombus mixtus), Indiscriminate cuckoo bumble bee (Bombus insularis), Two-form bumble bee (Bombus bifarius) Moths:🛑Phyllonorycter ledella Butterflies:Brown Elfin (Callophrys augustinus), Canadian Tiger Swallowtail (Pterourus canadensis), Silvery Blue (Glaucopsyche lygdamus)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, hummingbirds
Fragrant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Can resprout from root crown following fire. Typically found in moist habitats that burn infrequently.

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination. Surface sow on moist, acidic medium.

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

ORGHPS Germination Guide: Requires light or the seed is very fine. Surface sow and expose to light. * sprinkle seed on 10 cm damp sphagnum moss; cover with clear plastic pop bottle cut in half; transplant seedling to acidic mix in shade outdoors when 5 cm high; protect from rodents and give protection in cold frame first winter

Source: Ontario Rock Garden & Hardy Plant Society