Blechnum brasiliense

RHS Plant Profile

dwarf Brazilian tree fern

RHS

Synonyms

Blechnum corcovadense var. crispum

Conservatory Greenhouse Ferns

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An evergreen, frost-tender fern reaching a height and spread of 1.5m by 1m. The erect to arching fronds are slightly crinkled; new fronds emerge an intense pinkish-red colour before maturing to a glossy green. Over time, the erect rhizome will form a thin trunk around 30cm high

Position

Partial shade

Soil Types

Loam

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 10–20 years
Max Spread: 0.5-1 metres
Max Height: 1-1.5 metres

Growing Conditions

Loam

Moisture: Moist but well–drained
pH: Acid or Neutral

Position

Partial shade

Aspect: East–facing or South–facing or North–facing or West–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): H1A

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Blechnaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Columnar upright
Genus: Blechnum are mostly evergreen ferns with erect or creeping rhizomes and simply pinnate, leathery fronds, the fertile ones usually erect, the sterile often spreading
Name Status: Correct
Plant Range: Mexico to South America

How to Grow

Cultivation

Best grown under glass in frost-free conditions in a neutral to acid loam compost with bright filtered or indirect light, a humid atmosphere and good ventilation

Propagation

Propagate by spores in summer or propagate by division but may take some time to re-establish

Suggested planting locations and garden types

Patio and container plants
Sub-tropical

Pruning

Tidy if necessary, removing older fronds

Pests

Generally pest-free

Diseases

Generally disease-free