Overview
Blechnum brasiliense 'Volcano' is a columnar upright conservatory greenhouse in the genus Blechnum, part of the Blechnaceae family, with evergreen foliage. It typically grows around 1-1.5 metres tall and 0.5-1 metres wide, reaching full size in around 5-10 years. Blechnum brasiliense 'Volcano' grows best in full shade and partial shade, and tolerates loam soils and acid pH. Its UK hardiness is rated H1a. Suggested uses include patio and container plants and sub-tropical.
About
Neoblechnum is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, with a single species Neoblechnum brasiliense, according to the Pteridophyte Phylogeny Group classification of 2016. The genus is accepted in a 2016 classification of the family Blechnaceae, but other sources sink it into a very broadly defined Blechnum, equivalent to the whole of the PPG I subfamily; the species is then known as Blechnum brasiliense.
Wikipedia contributors, CC BY-SA 4.0 — Neoblechnum
About the genus
Blechnum, known as hard fern, is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, according to the Pteridophyte Phylogeny Group classification of 2016. Two very different circumscriptions of the genus are used by different authors. In the PPG I system, based on Gasper et al.
Wikipedia contributors, "Blechnum", CC BY-SA 4.0 — Blechnum
Growing conditions
Best soil and position for Blechnum
- Sunlight
- Full shade, Partial shade
- Soil type
- Loam
- Soil pH
- Acid
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, North-facing
- Exposure
- Sheltered
- UK hardiness
- H1a
Plant details
Blechnum brasiliense 'Volcano' size, habit and characteristics
- Plant type
- Conservatory Greenhouse, Ferns
- Habit
- Columnar upright
- Foliage
- Evergreen
- Height
- 1-1.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 5-10 years
- Suggested uses
- Patio and container plants, Sub-tropical
Care notes
Pruning and caring for Blechnum brasiliense 'Volcano'
- Propagation
- Spores in summer, division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Blechnum brasiliense 'Volcano'?
Blechnum brasiliense 'Volcano' prefers full shade and partial shade. It suits sheltered positions.
What soil does Blechnum brasiliense 'Volcano' need?
Blechnum brasiliense 'Volcano' grows best in loam soil. It prefers acid soil. Aim for soil that stays moist but well-drained.
How big does Blechnum brasiliense 'Volcano' grow?
Blechnum brasiliense 'Volcano' reaches a height of 1-1.5 metres and a spread of 0.5-1 metres. It takes around 5-10 years to reach full size.
Is Blechnum brasiliense 'Volcano' hardy in the UK?
Blechnum brasiliense 'Volcano' has an RHS hardiness rating of H1a, meaning it needs tropical warmth above 15°C and must be grown under glass in the UK.
How do I propagate Blechnum brasiliense 'Volcano'?
Spores in summer, division in spring.