Nested Polypody
Polypodium calirhiza
Care
full sun
moderate
Friendly
Coastal and inland areas of northern and central California in moist riparian and canyon habitats, sea level to 4000 ft elevation.
Care Guide
Planting
Plant your nested polypody in full sun in a location that mimics its natural habitat on rocky cliffs or outcrops - think well-draining soil and good air circulation. This fern can work in containers or as a groundcover, giving you flexibility in placement around your Bay Area garden. Plant in spring for best establishment before summer arrives.
After Planting
Water moderately during the growing season, tapering back as the plant establishes itself. Since this fern naturally grows on rocky terrain and is sometimes epiphytic (living on other plants), avoid overwatering and ensure excellent drainage - soggy soil is your biggest enemy with this species. Once established, it should need little intervention beyond occasional checks to make sure drainage remains good.
Endangered & Threatened Species Supported
Listed under federal ESA and CESA; Critical habitat designated; amphibian chytrid fungus threat
Wildlife Supported
Arachnids
web construction and hunting substrate on fern fronds
Insects
microhabitat foraging and decomposition processes in damp fronds
algae and lichen grazing on frond surfaces
nest construction and protection in frond clusters April-September
Amphibians
moisture retention and shelter in riparian fern patches
Birds
foraging on arthropods in fronds during winter months
insects flushed from fronds during breeding season April-August
Reptiles
shelter and foraging substrate among dense fronds
shelter and arthropod foraging in moist fern base