Also known as Delta Maidenhair Fern · Maidenhair Fern
Delta Maidenhair fern (Adiantum raddianum) is a delicate, clumping fern with graceful, fan-shaped fronds and wiry black stems.
At-a-glance light, water, soil, and growing conditions from plant data
Bright, indirect light
50% intensity
Avoid direct sunlight, which can scorch the fronds and dry out the plant.
Keep consistently moist
75% intensity
Avoid letting the soil dry out completely, but also prevent waterlogging.
Rich, well-draining potting mix, preferably with added organic matter.
50% intensity
Average room temperature
50% intensity
Prefers temperatures between 18-24°C (65-75°F). Avoid drafts and sudden temperature fluctuations.
Light feeding during growing season
25% intensity
Diluted balanced liquid fertilizer every 4-6 weeks from spring to summer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
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. Use filtered or distilled water to prevent mineral buildup, which can harm the delicate fronds.
Allow the top layer of soil to dry slightly between waterings, but never let it become completely dry. Overwatering can lead to root rot.
Remove any brown, yellow, or damaged fronds by snipping them off at the base. This encourages new growth and maintains the plant's attractive appearance.
Pruning also helps prevent fungal diseases by improving air circulation around the plant.
Delta Maidenhair ferns are best propagated by division. Carefully divide the rhizomes during repotting in spring. Each section should have at least one healthy frond and some roots.
Pot the divisions in well-draining soil and keep them consistently moist.
Repot your Delta Maidenhair fern every 1-2 years in spring, or when it becomes root-bound. Choose a pot that is only slightly larger than the current one. Use a well-draining, peat-based potting mix.
Ensure good drainage to prevent waterlogged roots.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Delta Maidenhair (Adiantum raddianum)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Polypodiopsida |
| Order | Polypodiales |
| Family | Pteridaceae |
| Genus | Adiantum |
| Species | Adiantum raddianum |
Similar in genus Adiantum
Answers based on plant encyclopedia data
