Denseflower Mullein

Verbascum densiflorum

Native to:
Albania, Austria, Belarus, Belgium, Bulgaria, Czechia-Slovakia, Denmark, France, Germany, Greece, Italy, Krym, Morocco, Netherlands, North Caucasus, NW. Balkan Pen., Poland, Romania, Russia, Sicilia, Spain, Sweden, Switzerland, Türkiye-in-Europe, Ukraine

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Scrophulariaceae
Genus:
Verbascum
Species:
Verbascum densiflorum
USDA Symbol:
VEDE4

Growth Characteristics

Life Cycle:
Biennial
Growth Habit:
Forb/herb
Height:
200 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
jun,jul,aug,sep
Bloom Colors:
yellow

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes

Soil Requirements

Soil Type:
poor, sandy, well-drained soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers open, sunny locations

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–30 days
Notes:
Seeds require light for germination; surface sow and do not cover.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.

Source: Ontario Rock Garden & Hardy Plant Society