Water
Keep the soil consistently moist but not waterlogged. Water when the top 2-3 cm of soil begins to feel dry. Ensure good drainage to prevent root rot.
Avoid letting the plant dry out completely, especially during warmer months.
Also known as Alpen-Blasenfarn
Alpine bladder-fern (Cystopteris alpina) is a delicate, small fern with finely divided fronds, thriving in cool, moist, shaded environments like rock gardens.
At-a-glance light, water, soil, and growing conditions from plant data
Partial Shade
50% intensity
Thrives in dappled shade or bright, indirect light. Avoid direct sun.
Consistent Moisture
75% intensity
Prefers evenly moist soil; do not allow to dry out.
Humus-rich, moist, well-drained
50% intensity
Cool to Moderate
50% intensity
Prefers temperatures between 10-20°C. Protect from extreme heat.
Light Feeding
25% intensity
Feed sparingly in spring with a diluted balanced liquid fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist but not waterlogged. Water when the top 2-3 cm of soil begins to feel dry. Ensure good drainage to prevent root rot.
Avoid letting the plant dry out completely, especially during warmer months.
Remove any dead, damaged, or yellowing fronds as they appear. This helps maintain the plant's appearance and redirects energy to healthy growth. Trim back any leggy growth to encourage a more compact form.
Alpine bladder-fern is best propagated by dividing established clumps in spring. Gently separate the rhizomes, ensuring each division has healthy roots and a few fronds. Replant immediately into suitable moist soil.
Repot every 2-3 years or when the plant becomes root-bound. Use a well-draining potting mix, preferably with added organic matter. Choose a pot that is slightly larger than the current one.
Repot in early spring before new growth begins.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Alpine Bladder-Fern (Cystopteris alpina)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Polypodiopsida |
| Order | Polypodiales |
| Family | Cystopteridaceae |
| Genus | Cystopteris |
| Species | Cystopteris alpina |
Similar in genus Cystopteris
Answers based on plant encyclopedia data
