Propagated from spores, same as other ferns. Many of the tree ferns have spores with very short viability, so gather them and sow immediately if you can, rather than buying them and possibly wasting time on spores that cannot germinate.
Cen/North Royal Crest Nurseries 863-984-3000 Polk City FL -- # 7 $40.00 Gateway Gardens 407-365-3655 Oviedo FL -- # 7 3-4' $27.00 Gateway Gardens 407-365-3655 Oviedo FL -- #15 4-6' $45.00 E.Coast Sunscape East, Inc 813-855-2121 Malabar FL -- # 3 $12.00 Jesse Durko's Nsy 954-873-4563 Ft Lauderdale FL 50 # 7 $20.00 Sunscape East, Inc 813-855-2121 Malabar FL -- # 7 $20.00 Oviedo's probably close to you? I'm in Tampa. ~LCA.
Hi, I planted spores of Cyathea cooperi from the Azores on May 17 and fifteen days after they germinated. You can see the method of propagation of ferns by spores here: http://www.jardin-mundani.es/English/fern-scolopendrium.htm Best Regards from Majorca Island: Juan