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Perennials > Petasites > Petasites japonicus > Petasites japonicus var. giganteus

Petasites japonicus

var. giganteus


Giant Japanese Butterbur




            Mike's Opinion

this is Mike

"

I admire the texture and form of this plant but have lived to regret its inclusion in the landscape where it has become a garden thug, even growing under concrete walkways to adjoining planting beds; control, nuclear bombs.



Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)

"

Family
Asteraceae
Genus
Petasites
Species
japonicus
Category
Perennials
Variety
giganteus
USDA Hardiness Zone
5 - 9
Canadian Hardiness Zone
4a - Requires cool season protection under glass.
RHS Hardiness Zone
H3 - H7
Temperature (°C)
-29 -(-1)
Temperature (°F)
-20 - 30
Height
120 - 180 cm
Spread
90 - 120 cm
Photographs
Description and Growing Information
Flowering Period
MarchAprilMay
General Description
This plant is a very aggressive spreader and prefers sunny, moist areas.
Landscape
Use with caution since it can travel quite far in the landscape where conditions are ideal and although ornamental use with extreme caution.
Leaf Description
This plant has deep green rounded leaves.
Notable Specimens
The Gardens of Fanshawe College, London, Ontario, Canada.
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