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Japanese Butterbur*

Petasites japonicus

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Japanese Butterbur (Petasites japonicus) at Squak Mountain Nursery

Japanese Butterbur

Japanese Butterbur

(Photo courtesy of NetPS Plant Finder)

* This is a "special order" plant - contact store for details

Plant Height:  3 feet

Flower Height:  4 feet

Spacing:  4 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  4

Other Names:  Fuki, Bog Rhubarb

Description:

Truly exotic in character with large leaves making this Asian import an interesting addition to the bog or moist shade garden; large leaves give it an almost prehistoric appeal

Ornamental Features

Japanese Butterbur's attractive large tomentose round leaves remain green in color with curious silver undersides throughout the season. It features bold spikes of creamy white flowers rising above the foliage in early spring before the leaves. The fruit is not ornamentally significant.

Landscape Attributes

Japanese Butterbur is a dense herbaceous perennial with a rigidly upright and towering form. Its wonderfully bold, coarse texture can be very effective in a balanced garden composition.

This is a high maintenance plant that will require regular care and upkeep, and should be cut back in late fall in preparation for winter. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Invasive

Japanese Butterbur is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • Groundcover
  • Naturalizing And Woodland Gardens
  • Bog Gardens

Planting & Growing

Japanese Butterbur will grow to be about 3 feet tall at maturity extending to 4 feet tall with the flowers, with a spread of 4 feet. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 4 feet apart. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 20 years.

This plant does best in full sun to partial shade. It prefers to grow in moist to wet soil, and will even tolerate some standing water. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America, and parts of it are known to be toxic to humans and animals, so care should be exercised in planting it around children and pets. It can be propagated by division.

 

* This is a "special order" plant - contact store for details

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Massing  Groundcover  Naturalizing  Bog 
Applications
Flowers  Foliage Color  Texture 
Ornamental Features

Disclaimer - This Plant Finder tool is an online resource representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact the store directly for availability. It does not include our entire inventory of plants, so be sure to visit our store to see varieties that may not be represented on this list.