Asplenium septentrionale
Asplenium septentrionale · Aspleniaceae
The gardener's calendar
Ideal time to plant asplenium septentrionale: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Evergreen
- Adult size
- 15 to 30 cm tall
- Growth
- Slow
- Hardiness
- Very hardy (down to -15°C)
- Origin
- Temperate regions of Eurasia and North America
- Natural habitat
- Rock crevices and limestone cliffs
- Soil type
- Well-drained, rocky, slightly alkaline
Care
Watering
Northern Spleenwort prefers a cool and slightly moist environment, but without excess. Water moderately during the growing period (spring-summer), allowing the soil to dry slightly between waterings. In winter, reduce watering to a minimum. Avoid standing water which causes rot.
Light Exposure
This fern thrives in partial shade or indirect light. It tolerates semi-shaded areas well and benefits from protection against direct afternoon sun. An east or north-facing position is ideal for maintaining healthy foliage.
Soil and Drainage
Prepare a well-draining substrate made of potting soil, perlite, and fine gravel. This species loves neutral to slightly alkaline, well-aerated soils. Excellent drainage is essential to avoid root problems.
Cleaning and Pruning
Regularly remove dead or damaged fronds by cutting them at the base. No formal pruning is necessary; simply eliminate dead wood to maintain a compact and healthy appearance.
Fertilizing
A light application of balanced fertilizer diluted to half-strength will suffice, applied once or twice monthly during the growing period (May to September). Since ferns are not heavy feeders, avoid overfeeding which could weaken the plant.
Diseases and Pests
This fern is generally robust and not very susceptible to diseases. Watch for red spider mites or mealybugs in dry environments. Good watering practices and adequate humidity remain the best preventatives.
Did you know?
Northern Spleenwort is a calcicole fern, meaning it thrives in limestone-rich environments where it often prospers in rock crevices. Its common name 'Spleenwort' evokes the golden tint of its young fronds, while 'Northern' refers to its natural habitat in the cold mountainous regions of the northern hemisphere, where it proves remarkably resistant to frost and extreme conditions.
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
- Maidenhair spleenwortAsplenium trichomanes
- Hart's-tongue fernAsplenium scolopendrium
- Wall rueAsplenium ruta-muraria
- Black spleenwortAsplenium adiantum-nigrum
- Asplenium ceterachAsplenium ceterach
- Green spleenwortAsplenium viride
Tips generated and checked by Viridia — adapt them to your local climate.