Hammock fern
Blechnum occidentale · Blechnaceae
The gardener's calendar
Ideal time to plant hammock fern: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Evergreen
- Adult size
- 1.5 to 5 feet tall
- Growth
- Moderate
- Hardiness
- Tender (mild climate, zones 9-11)
- Origin
- Central and South America
- Soil type
- Rich, well-draining, slightly acidic
- Exposure
- Partial shade to shade
Care
Watering
Keep the substrate constantly moist, without waterlogging. Water regularly during the growing season (spring-summer) and reduce slightly in winter. Since dry air is harmful, mist the foliage several times a week or place the pot on a bed of moist pebbles.
Light and Exposure
Prefer partial shade or bright shade, away from direct sun which scorches the fronds. A shaded conservatory, a corner away from an east-facing window, or a woodland setting are ideal. Avoid areas that are too dark, as they slow growth.
Substrate and Repotting
Use rich, porous potting soil made from heath soil, peat, and perlite or bark to ensure excellent drainage. Repot in spring every 2-3 years. Good root aeration is essential to prevent rot.
Pruning and Maintenance
Regularly remove dead, yellowed, or damaged fronds at the base. This fern doesn't require aesthetic pruning. Gentle cleaning with a damp cloth preserves the shine of the foliage.
Fertilization
Apply balanced fertilizer, diluted to half strength, once a month during the growing season (April to September). Ferns tolerate excessive feeding poorly; under-feeding is better than overdosing.
Common Problems
Watch for mealybugs and spider mites, which thrive in dry air. Excess stagnant moisture causes root rot. Isolate any affected plant and treat with gentle methods (water sprays or natural soap).
Did you know?
Blechnum occidentale is a highly prized fern in tropical and subtropical horticulture for its architectural elegance. Its name 'occidentale' reflects its origins in Central and South America. Unlike ferns that reproduce through microscopic spores, this species fascinates botanists with its ability to create humid microecosystems around itself, attracting flies, spiders, and beneficial insects in its natural habitat.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Hard FernStruthiopteris spicant
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- Parablechnum novae-zelandiaeParablechnum novae-zelandiae
- Cranfillia fluviatilisCranfillia fluviatilis
- Netted chain fernLorinseria areolata
- Oceaniopteris cartilagineaOceaniopteris cartilaginea
Tips generated and checked by Viridia — adapt them to your local climate.