Cold-Hardy Seedlings Sunset Zone USDA Minim. Species Price Potential Zone Temp. Origin Comments Bowenia serrulata $29 16 17 9b 23°F Australia Fernlike smaller plant, bipinnate. Ceratozamia hildae $29 15 16 17 8b 19 °F Mexico Only clustered leaflet cycad Ceratozamia latifolia $25 15 16 17 8b 19 °F Mexico Broad, flat leaflets Ceratozamia mexicana $25 15 16 17 8b 19 °F Mexico Long dark green leaves Ceratozamia robusta $29 15 16 17 8b 19 °F Mexico Erect vertical stature for species Ceratozamia sp. "Molongo" $25 15 16 17 8b 19 °F Mexico Newly identified species Cycas debaoensis $95 16 17 9b China Very rare split-leafed cycas. Cycas guizhouensis $49 14 15 16 17 8b 17.5°F China Highly endangered, cold-hardy Cycas panzhihuaensis $29 15 16 17 8b 19.2°F China Blue-green cold-hardy plant. Cycas pectinata $25 16 17 9b 26°F Thailand Trunking mountain cycad Cycas petraea $29 16 17 9b 25°F Thailand Cold-hardy, broad leaves Cycas revoluta $7 14 15 16 17 8b 19°F Japan The cold hardy King Sago Dioon angustifolium $19 14 15 16 17 8b 17.5°F Mexico Blue-gray, red emergent leaves. Dioon califanoi $35 16 17 9a 23°F Mexico Rare Oaxacan, keeled leaves Dioon edule Veracruz $12 14 15 16 17 8b 19 °F Mexico Type specimen. Very hardy. Dioon edule Rio Verde $15 14 15 16 17 8b 19 °F Mexico Wider leaflets than other edules Dioon edule Jacala, Hidalgo $15 14 15 16 17 8b 19 °F Mexico Blue-green leaves, upright habit Dioon edule Queretaro $19 14 15 16 17 8b 19 °F Mexico Bluest of the edules. Dioon holmgrenii $19 16 17 9a 23°F Mexico Rare Oaxacan, keeled leaves Dioon merolae $29 16 17 9a 23°F Mexico Overlapping Venetian blind leaflets Encephalartos aemulans $35 16 17 9a S. Africa Ultra-rare, dark green leaves Encephalartos altensteinii $25 16 9b 25.9°F S. Africa Tall Green Eastern Cape Giant Encephalartos friderici guilielmi (1 Gal) $60 14 15 16 17 8b S. Africa Fine-leafed, hardy, full sun Encephalartos horridus $45 16 17 9a 25°F S. Africa The classic S. African blue cycad Encephalartos lebomboensis Estatuene $29 16 9b 24.8°F Mozamb. Dark green glossy leaves Encephalartos lebomboensis Piet Retief $29 16 9b 24.8°F S. Africa Fine-leafed version of above. Encephalartos lehmannii $39 14 15 16 17 8b 21.5°F S. Africa Blue, sun, heat & cold tolerant Encephalartos natalensis "Vryheid" $29 16 17 9a 21.5°F S. Africa Natal Giant. Smoother leaves. Encephalartos natalensis "Highflats" $29 16 17 9a 21.5°F S. Africa Natal Giant. Broad leaflets. Encephalartos senticosus $19 16 17 9a S. Africa Very glossy green leaves Encephalartos villosus $19 16 17 9a S. Africa Very glossy green leaves Lepidozamia peroffskyana $25 16 17 9a Australia Spineless. Arching leaves, shade. Macrozamia fraseri $25 15 16 17 9a 21.5°F Australia Cold hardy, mediterranean habitat Macrozamia communis $19 15 16 17 9a 22°F Australia Cold hardy from SF type climate Macrozamia moorei $25 15 16 17 9a 22°F Australia Cold hardy, grows large trunk Macrozamia riedlei $19 15 16 17 9a 22°F Australia Cold hardy, mediterranean habitat Maurice Levin The Jurassic Garden at A&A Cycads Nursery: (818) 759-0600 Fax: (310) 859-0137 Email: [email protected] Website: http://cycads.com.