About
Blechnum brasiliense Eruption ('Alceru') is a perennial fern characterized by its erect, lanceolate fronds. The young fronds emerge in a vivid red hue, transitioning to a vibrant green as they mature.
About the genus
Blechnum consists primarily of evergreen ferns characterized by upright or spreading rhizomes. The fronds are typically simple and pinnate, with fertile fronds standing upright while the sterile ones tend to spread out.
Growing conditions
- Sunlight
- Partial shade
- Soil type
- Loam
- Soil pH
- Acid
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, North-facing
- Exposure
- Sheltered
- UK hardiness
- H1B
Plant details
- Plant type
- Conservatory Greenhouse, Ferns
- Habit
- Columnar upright
- Foliage
- Evergreen
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Patio and container plants, Sub-tropical
Care notes
- 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. Outdoors, for warmer counties only, grow in a very sheltered position in moist, humus-rich neutral to acid soil in full to part shade
- Pruning
- Tidy if necessary, removing older fronds
- Propagation
- Propagate by spores in summer or propagate by division but may take some time to re-establish
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free