|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.|
17 In stock
Originating from China, Korea and Japan
One of the giants of the hosta world with great mounds of immense, thick, puckered, chartreuse coloured leaves up to 60cm long, and pale lilac bell-shaped flowers held on stout stems in July. If you’ve been discouraged from growing hostas because of slugs, ‘Sum and Substance’ is worth trying, being one of the most slug resistant varieties.
Capable of growing enormous given a humus rich moist soil this hosta will also succeed in part sun in a permanently moist soil.
Eventual mature plant size :
|Season of interest|