|1||15C+||Indoor||Grow as a houseplant or under heated glass.|
|2||10 to 15C+||Indoor / Outdoor||Grow indoors, or outdoors in summer in a sheltered spot|
|3||5 to 10C||Tender||Grow outdoors in summer, and in a heated glasshouse in winter.|
|4||1 to 5C||Tender||Grow outdoors or under glass without risk of frost.|
|5||-5 to 1C||Half-Hardy||Hardy in coastal/mild/sheltered areas. Will not tolerate hard/sudden frost. May require winter protection in situ. such as fleece or straw mulch.|
|6||-10 to -5C||Hardy||May suffer at altitude, central/northerly locations, harsh winters, cold gardens and when grown in pots.|
|7||-15 to -10C+||Hardy||Will survive most severe winters but may be at risk in central/northerly locations and in pots. Top growth may be destroyed but will usually re-grow.|
|8||-20 to -15C||Hardy||Will survive severe winter, but may need protection when grown in pots.|
|9||-20C & Colder||Very Hardy / Hardy||in the severest European climates.|
2 In stock
Originating from China, Japan and Taiwan
A unique and elegant evergreen fern with long, slender, arching stems bearing unusual, leathery, glaucous/green, pointed, finger-like leaves. Dryopteris sieboldii is quite unlike any other fern, almost un-fern like and very Jurassic. It loves warm summers when growth will be lush and exuberant but in cold summers growth can be slower and a single plant may produce three or four fronds.
Grow in moist, humus rich soil in part shade. Will grow in dry shade once established. Cut back decayed foliage in spring before new fronds begin to emerge.
Height and spread after 3 – 4 years 20cm x 30cm
Mature height and spread after 5 – 6 years 30cm x 60cm