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Mulga Fern or Poison Rock Fern (Cheilantes sieberi)
Mulga Fern or Poison Rock Fern (Cheilantes sieberi)
Stock Note: This fern will not be available to ship until April 13th, 2026!
This Xeric fern has blue-green bipinnate to tripinnate fronds with pinnae suspended on black stems. New growth emerges a bright lime green with wide spacing but matures to a dark blue-green color. The way the rounded margins of the pinnae overlap on mature fronds gives them a plume-like, shaggy look.
New fern, extended description coming soon!
Frond Condition: Evergreen
Mature Size: 6-10”
Origin: Australia and New Zealand
Cultural Requirements: Part Sun to Part Shade, Dryish to Lightly Moist to Evenly Moist but avoid water-logging or excessive moisture, especially during winter months.
USDA Zones: 8 (protect from excessive winter moisture), 9, 10



