Bohemian Knotweed

Reynoutria × bohemica

Native to:
Japan

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Polygonaceae
Genus:
Reynoutria
Species:
Reynoutria × bohemica
USDA Symbol:
POBO10

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
400 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
aug,sep
Bloom Colors:
white, greenish-white

Reported Fauna Sightings

Bees: Common eastern (Bombus impatiens)

Garden & Ecology Notes

Deer Resistant:
Yes
Salt Tolerant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
invasive species, adaptable to various conditions

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–30 days
Notes:
Seeds benefit from cold stratification; germination occurs in spring under moist conditions.