Japanese Painted Fern

Athyrium niponicum

Care guide

Quick ID

Perennial fern, ~12-18" tall and wide (slow clumping habit) Space ~18" apart for mature clumps Thrives in partial to full shade

Draper Microclimate Notes

Primary local risk is dry soil (frond crisping / early dormancy) rather than sun in a shaded location Heat stress risk if exposed to reflected sun Late spring emergence โ€” may look dead early in season (do not assume dead too early) Alkaline or compacted soil may reduce vigor

Watering & Irrigation

Consistent moisture required; does not tolerate drying out In shaded bed: deep watering 1-2x/week (adjust seasonally) Mulch 2-3" to retain moisture

Feeding & Soil

Prefers rich, well-drained, moisture-retentive soil Amend with compost or leaf mold Mulch to retain moisture and cool roots

Seasonal Care

| Window | Tasks | |---|---| | Spring | Expect late emergence โ€” don't assume dead too early | | Growing season | Maintain consistent moisture, mulch, avoid letting soil dry out | | Late fall or early spring | Cut back old foliage |