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Products > Dioon rzedowskii
 
Dioon rzedowskii - Rzedowsk's Cycad

Note: This plant is not currently for sale. This is an archive page preserved for informational use.  

 
Habit and Cultural Information
Category: Cycad
Family: Cycadaceae (Cycads)
Origin: Mexico (North America)
Evergreen: Yes
Flower Color: NA
Bloomtime: Infrequent
Height: 10-16 feet
Width: 6-8 feet
Exposure: Sun or Shade
Irrigation (H2O Info): Medium Water Needs
Winter Hardiness: 25-30° F
Dioon rzedowskii (Rzedowsk's Cycad) – A large attractive tall growing Mexican cycad that can eventually reach 15 feet tall with beautiful mature 5 feet long by about 1 foot wide arching leafs with Up to 80 pairs of 6 to 7 inch long leaflets that are tomentose when young and become a glossy pale green color and leathery within a few months. Plant in full sun to light shade in a moderately well drained soil and irrigate occasionally. Hardy at least down to the high 20s F. This plant is an attractive plant in the garden and is particularly useful in places like Santa Barbara where other wide leafed Dioon species do not thrive. It also makes a nice large container specimen. This cycad was first described as a new species in 1980. It comes from the valley of the Rio Santa Domingo in Oaxaca, Mexico, where it grows in crevices of limestone cliffs in open forest from 2100 to 2800 feet in elevation. It looks very similar to the more common Dioon spinulosum, though with leaflets that are entire, without teeth. The leaf also have 4 to 6 inch long bare petioles, which distinguishes it from Dioon meijae. Dioon rzedowskii is both hardier and tolerates full sun better than these other wide leafed Dioons and also remains the rarest of these three wide-leaf Dioons. The name honors Jerzy Rzedowski (1926- ) a Polish born botanist who moved to Mexico as a young man and became a prominent taxonomist and authority of Mexican plants. Our thanks to Eric Anderson for providing us with this greeat plant. 

The information about Dioon rzedowskii that is displayed on this web page is based on research conducted in our nursery's horticultural library and from reliable online resources. We will also include observations made about this plant as it grows in our nursery gardens and other gardens that we have visited, as well how the crops have performed in containers in our nursery field. We also incorporate comments that we receive from others and welcome hearing from anyone with additional information, particularly if they share cultural information that aids others growing this plant.

Please note that after 46 years in business, San Marcos Growers will be discontinuing nursery operations by the end of 2025 and the property will be developed for affordable housing.

 
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