Sticky Chinese Houses

Collinsia tinctoria

Native to:
United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Plantaginaceae
Genus:
Collinsia
Species:
Collinsia tinctoria
USDA Symbol:
COTI

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
50 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun,jul
Bloom Colors:
white, lavender, purple

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

⚠️Edith's checkerspot (Euphydryas editha)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies

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 environments

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–30 days
Notes:
Seeds germinate best with cool temperatures; light may aid germination.

Pre-treatment: Single-step cold-moist stratification for temperate woodland species. for 60–120 days

Notes: Seeds germinate readily without pretreatment.

Source: Claude AI