Cold Tolerant Species with Northern California Climate Data Please Note: Prices may not be current. Cold-Hardy Seedlings PDF File Download Please Note: Prices may not be current. Species List Bowenia serrulata Ceratozamia hildae Ceratozamia latifolia Ceratozamia mexicana Ceratozamia robusta Ceratozamia sp. "Molongo" Cycas debaoensis Cycas guizhouensis Cycas panzhihuaensis Cycas pectinata Cycas petraea Cycas revoluta Dioon angustifolium Dioon califanoi Dioon edule Veracruz Dioon edule Rio Verde Dioon edule Jacala, Hidalgo Dioon edule Queretaro Dioon holmgrenii Dioon merolae Encephalartos aemulans Encephalartos altensteinii Encephalartos friderici guilielmi (1 Gal) Encephalartos horridus Encephalartos lebomboensis Estatuene Encephalartos lebomboensis Piet Retief Encephalartos lehmannii Encephalartos natalensis "Vryheid" Encephalartos natalensis "Highflats" Encephalartos senticosus Encephalartos villosus Lepidozamia peroffskyana Macrozamia communis Macrozamia diplomera Macrozamia frasieri Macrozamia macleyi Macrozamia miquelii Macrozamia moorei Macrozamia mountperriensis Macrozamia riedlei Macrozamia spiralis