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Ferns

Polypodium cambricum (Semilacerum Group) 'Falcatum O'Kelly'

Welsh polypody 'Falcatum O'Kelly'

A deciduous terrestrial fern, to 50cm tall, with creeping rhizomes and lance-shaped to oblong, pinnate or very deeply divided mid-green fronds, with sickle-shaped pinnae, appearing in late summer and dying back in spring

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Loam

Sand

Chalk

Moisture

Well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or West–facing or North–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: Polypodiaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Polypodium can be evergreen or deciduous ferns, with creeping rhizomes bearing simple or pinnate fronds at intervals
Name status: Unresolved

How to grow

Cultivation

Easy to grow in moderately fertile, gritty or stony, neutral to alkaline, well-drained soil in sunny or lightly-shaded sites with shelter from cold winds. See how to grow ferns for further advice

Propagation

Propagate by division in spring or early summer. Sow spores at 15-16°C when ripe

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Flower borders and beds
Ground cover
Underplanting of roses and shrubs

Pruning

Dead or damaged fronds may be removed as necessary

Pests

Generally pest-free

Diseases

Generally disease-free

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