Onosma borysthenica

Onosma borysthenica

Native to:
Russia | Ukraine

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Boraginaceae
Genus:
Onosma
Species:
Onosma borysthenica

Growth Characteristics

Height:
60 cm
Drought Tolerance:
High
Bloom Months:
may,jun,jul
Bloom Colors:
yellow

Garden & Ecology Notes

Wildlife Value:
bees
Deer Resistant:
Yes

Source: deepseek-v4-flash

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–30 days
Notes:
Seeds germinate best after cold stratification; sow in spring or fall.

Source: deepseek-v4-flash

ORGHPS Germination Guide: Sow @ 20C 6 wks then 4C 6 wks then slowly raise to 10C 6 wks. Repeat if no germination.

Source: Ontario Rock Garden & Hardy Plant Society