Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Caprifoliaceae

Genus:

Triosteum

Species:

Triosteum angustifolium

USDA Symbol:

TRAN3

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb

Height:

90 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

may,jun

Bloom Colors:

yellow, cream, purple

Garden & Ecology Notes

Wildlife Value:

birds

Deer Resistant:

Yes

Soil Requirements

Soil Type:

rich, well-drained loamy soil

pH:

5.5 - 7.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

prefers open woodland and rocky slopes

Propagation & Germination

Stratification:

Warm then cold/moist stratification (double dormancy) — 60–120 days

Germination Time:

30–365 days

Notes:

Double dormancy requires warm stratification followed by cold stratification. Germination can be erratic and may take over a year.

The above propagation data sourced from Claude AI