While flower-arrangers love the posy-like heads of green and white flowers which burst through bare clay in early spring, this is a plant for landscaping with its huge round leaves and invasive roots, making impenetrable ground-cover in heavy soil, even in solid clay.
Petasites japonicus var. giganteus
Japanese butterbur, giant butterbur
Details
| Aspect | Sun or part shade |
| Flower Colour | White | Cream |
| Flowering Period | Feb | Mar | Apr |
| Foliage | Not evergreen |
| Goes Well With | Angelica, Iris, Lythrum |
| Growth Habit | Spreading |
| Hardiness | Fully hardy |
| Height | 1.2m |
| Soil | Moisture-retentive |
| Spread | Indefinite |
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