Cyrtomium falcatum
Japanese holly fern, Asian holly fern
Also known as Polystichum falcatum, Phanerophlebia falcata
- Height × spread
- 0.6m × 0.5m
- Position
- Part shade
- Hardiness
- Mild winter to -5C (RHS H3)
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
A beautiful rather spiky looking fern which is popular as a house plant. This has long fronds with glossy pinnae that make slim sharply pointed triangles. Their appearance may be likened to the fronds of Mahonia. It is a bold, appealing plant, happy in a partly shaded site in humus rich soil. The fern is on the borderline of hardiness and it is worth trying it out of doors in the warmest parts of Britain and Ireland, giving it a sheltered spot. Protect the crown with a protective mulch during winter. It comes from Japan and the Far East but has become naturalised in both Europe and North America. Give it a soil with some acidity that always has moisture in it. This stands around 60cm (2ft) high with a 50cm (20in) spread.
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Fan
- Height
- 0.6m
- Spread
- 0.5m
- Evergreen
- Evergreen
- Garden style
- Shady court, Indoors, Conservatory
- Sun or shade
- Likes part shade, likes light shade
- Soil type
- Loam (normal)
- Soil pH
- Acid (ericaceous)
- Drainage
- Moisture retentive soil
- Hardiness
- Mild winter to -5C (RHS H3)
- Borders & containers
- Borders and containers
- Indoor light
- A light position not direct sun
- Indoor temperature
- 15C minimum temperature
- Use for
- Deer resistant
- Deer
- May be damaged by deer when very young
- Maintenance
- Easycare – low/no maintenance
- Hazards
- No
Spring
Spring-Summer · Indoors
Water during growth
Water regularly as soon as growth becomes apparent until the middle of the summer.
Adopt a regime whereby plants are thoroughly watered every week so that they do not become dessicated. In hot weather watering may need to be more frequent, but less often in cool or moist conditions.
Spring-Autumn · Indoors
Feed with houseplant food
Using a balanced houseplant fertiliser, feed at alternate waterings.
Where food elements are listed as three numeric values on the label representing in order Nitrogen(N)-Phosphorus(P)-Potassium(K), with percentage values for each, choose one where the values are more or less equal.
Spring · Outdoors
Apply acidic mulch
Where soil is only just acidic, apply mulch with a high acidic content such as leaf mould, or mulch for ericaceous plants. Alternatively the plant can benefit from a feed of iron supplement (iron chelate) such as sequestrol.
Spring - late · Outdoors
Feed with slow release fertiliser
Apply a general purpose slow release fertiliser, spreading it around the root area of the plant as it is coming into growth. (Or apply a liquid feed at regular intervals throughout the growing season.)
This is a simple way to provide a nutrient boost as a single annual procedure.
Spring-Autumn · Outdoors
Water to keep the soil moist
For best results, this plant needs soil that is always moist. Water deeply and regularly as soon as soil appears dry. Even for established plants in the ground, a dry week can cause problems with some soils. Check plants in pots more often, especially in hot weather. Or install an automatic irrigation system which will do the hard work for you, even when you are away on holiday.
Without regular watering some plants never fully regain their beauty.
Winter
Winter · Indoors
Water moderately in winter
Water moderately.
Give a small amount of water so that the plant doesn't become flaccid (leaves lose their firmness and may droop or look lifeless), or dessicated, but do not saturate the compost or leave it standing in water.
Planting & general
Outdoors
Water with rain water
This plant needs rain water or soft water (the minerals in alkaline or "hard" water are harmful). This is especially important for plants in pots.
Compost · Planting
Loam based compost for repotting
Repot using any good quality standard compost.
Alternatively prepare a special compost that is best suited to the plant's needs: mix equal amounts of loam (John Innes no. 2 or 3), leaf mould, bark and grit.
Indoor temperature · Planting
15C minimum temperature
This plant requires a minimum temperature of 15 Centigrade.
Indoor plant · Planting
Position in indirect light indoors
Give the plant a position that is cool and light, and away from direct sunshine.