Dryopteris crassirhizomaRef.: DRYOP 469
Origin : Japan, Korea, eastern Siberia.
Family : Dryopteridaceae.
Thick-stemmed wood fern.
Large-scale fern with a stout rhizome. The fronds are pinnate-pinnatifid, dense, glossy, fresh green, in spread wide crowns. The croziers are cloaked with brown scales and their unfurling is stunning. For a cool soil, acidic or chalky, in medium shade. It is drought tolerant. Evergreen. Height : 80cm. Width : 1m. Hardiness : -30°C.
- Foliage : evergreen
- Height : 60 to 90cm
- Soil type : any, deep, humusy, peaty
- Site : streams or ponds banks, cool to moist woods, forest edge, dry to cool woods, mixed borders
- Exposure : shade, half shade
- Shape : spread, flared
- Rhizome : erect
- Hardiness : down to -30°C (-22°F)