Masterwort

Peucedanum ostruthium

Native to:
Austria, Corse, Czechia-Slovakia, France, Germany, Italy, NW. Balkan Pen., Poland, Spain, Switzerland

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Apiaceae
Genus:
Peucedanum
Species:
Peucedanum ostruthium
USDA Symbol:
PEOS2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
100 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
jun,jul,aug
Bloom Colors:
white

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, beneficial insects
Deer Resistant:
Yes
Fragrant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers cool, shaded environments

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–90 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination. Fresh seed germinates best; older seed may have reduced viability.

The above propagation data sourced from Claude AI

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