Buy Petasites japonicus ssp. giganteus

Also Known As

Petasites japonicus 'giganteus'
Petasites japonicus giganteus
Petasites japonicus var. giganteus
Giant Japanese Butterbur
Giant Sweet Coltsfoot

Plant type

perennial, aquatic

size

H: 2'-5'
W: 4'-20'

planting zones

6a-9b

1 gallon | $25

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Fewer than 1 at Forestfarm

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Petasites japonicus ssp. giganteus plant details

Petasites japonicus ssp. giganteus is a broadleaf deciduous perennial aquatic with green foliage. In spring white flowers emerge. Features fuzzy texture. Grows well with bright shade - shade and standing water - regular water. Does well in average, clay and rich soil.

CHARACTERISTICS OF Petasites japonicus ssp. giganteus

Plant type: perennial aquatic
Plant family: asteraceae
Foliage: deciduous green
Mature size: 4 FT - 20 FT - wide, 2 FT - 5 FT - tall
Flowers: white blooms in spring
Uses: big leaves, cutting garden

GROWING CONDITIONS for Petasites japonicus ssp. giganteus

USDA Zones: 6a - 9b
Sun exposure: bright shade - shade
Watering frequency: standing water - regular

Soil needs: average, clay and rich

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Nursery contributed plant descriptions

The huge rounded leaves of this incredible perennial can be 2-3' across! These 4-6' clumps of 'dinosaur food' plants are perfect for dramatic plantings, but not for the small or dry garden. Baseball-size flower buds erupt in late winter to reveal fragrant white flower clusters on tall stalks. This is cultivated in Japan as a choice edible; the stalks are cooked in soups or preserved in miso. Easily grown in moist to wet soils; this can spread very aggressively, so take care to plant it in containers or use barriers. PSh-Sh/M-W

By: Forestfarm

This imposing spreading perennial has leaves growing up to 5 feet tall and 4 feet wide and will form large colonies in time. The flowers emerge in early spring before the foliage as creamy white rounded clusters at the ground that later elongate. Protect emerging foliage from slugs. This plant is a spreader though I find it easy to control in my garden since the rhizomes are just below the soil surface and easy to pull out where I don't want it.

By: Phoenix Perennials and Specialty Plants Ltd.

Some of the largest leaves from a winter hardy perennial here, looks crazy and out of place in Michigan, which I love. When happy it will run AGGRESSIVELY, and it is often happy, so let it loose in a big bog where it can spread out and be amazing without bothering anyone. Zone 5

By: Arrowhead Alpines

Blooms: spring, white flowers that when emerging look like an ornamental cabbage/ Huge foliage to three feet across. Give lots of room for best foliage effect. Zone 4-9. 6', Japan, part shade-shade, moist, well drained.

By: Keeping it Green Nursery

This is the big guy. Leaves can reach 2 feet across. Likes a damp spot but will grow in average garden spots also. Leaves are slightly fuzzy when young. Flowers open before leaves appear, often in February here.