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Herbaceous Perennial

Hosta 'Sea Grotto'

plantain lily 'Sea Grotto'

A clump-forming, deciduous perennial to around 50cm tall forming a mound of nearly round, puckered, blue-green leaves spreading to 1.2m across; each leaf can reach up to 27cm long and 24cm wide. White flowers are borne on sturdy stems in early summer

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

1–1.5 metres

Clay

Loam

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Partial shade

Aspect

West–facing or North–facing or East–facing

Exposure

Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Asparagaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Hosta are clump-forming herbaceous perennials with simple, ovate or lance-shaped leaves, often attractively coloured or variegated, and erect racemes of nodding, funnel or bell-shaped flowers in early summer
Name status: Accepted

How to grow

Cultivation

Grow in fertile, moist but well-drained soil in part or full shade shelter from cold, dry winds. See hosta cultivation for further information

Propagation

Propagate by division in late summer or early spring

Suggested planting locations and garden types

Coastal
Patio and container plants
City and courtyard gardens
Cottage and informal garden
Flower borders and beds

Pruning

Remove spent foliage as required and clear up dead foliage when it dies back at the end of growing season

Pests

May be susceptible to slugs, snails and vine weevil

Diseases

Generally disease-free

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