Alphabetical Plant Listing

Dioon edule (Chestnut Dioon)

Cycad, Chestnut Dioon, Edible-Seed Cycas, Virgin's Palm, Mexican Cycad, Mexican Blue Chamal, Mexican Fern Palm, Dioon aculeatum, Dioon imbricatum, Dioon strobilaceum, Dioon strobilosum, Macrozamia littoralis, Macrozamia pectinata, Platyzamia rigida, Zamia maeleni, Zamia friderici-guilielmi, Zamia macleani, Zamia rigida,


Slow-growing, Dioon edule (Chestnut Dioon) is an elegant, palm-like, evergreen cycad with an open rosette of large, stiff and straight, blue-green, pinnate leaves, up to 3-6 ft. long (90-180 cm). Borne atop a short stocky trunk, the leaves are divided into up to 120-160 spine-tipped, narrow leaflets. This plant is dioecious, presenting separate male and female plants. Distinctive cones appear on male and female plants in alternate years. The male pollen cones are pale brown, up to 16 in. across (40 cm), while the female seed cones are more egg-shaped, soft and furry, pale gray, up to 14 in. across (35 cm). Resembling pineapples, the seed cones are very decorative and can contain up to 200 or more edible seeds. Drought and salt tolerant, Dioon edule is also one of the most cold hardy cycads. It can survive temperatures down to 22ºF (-5ºC). Long lived (several hundred years), Chestnut Dioon is easy to grow and an excellent choice for low-maintenance gardens where its lush foliage adds a tropical touch. Spectacular as a specimen, in groupings or in containers (container grown plants are unlikely to produce any seed).

  • Winner of the prestigious Award of Garden Merit of the Royal Horticultural Society
  • Grows up to 6-8 ft. tall (180-240 cm) and 4-6 ft. wide (120-180 cm).
  • Easily grown in moist, humusy, gritty, well-drained soils in full sun to part shade. Best in partial shade, especially in hotter climates. Tolerates poor soils. Drought tolerant once established.
  • No serious disease or pest issues. Keep an eye out for cycad aulacaspis scale and caterpillars
  • Propagate by offsets or seed (it is among the easiest plants to germinate).
  • Native to the eastern coast of Mexico.

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Requirements

Hardiness 9 – 11
Heat Zones 5 – 12
Climate Zones 14, 15, 16, 17
Plant Type Palms - Cycads
Plant Family Palms - Cycads
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 6' – 8' (180cm – 240cm)
Spread 4' – 6' (120cm – 180cm)
Spacing 72" – 84" (180cm – 210cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Plant of Merit, Showy, Evergreen, Fruit & Berries
Tolerance Deer, Drought, Salt
Garden Uses Beds and Borders, Patio and Containers
Garden Styles Coastal Garden, Mediterranean Garden

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(c) Gerhard Bock, SucculentsandMore.com

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 9 – 11
Heat Zones 5 – 12
Climate Zones 14, 15, 16, 17
Plant Type Palms - Cycads
Plant Family Palms - Cycads
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 6' – 8' (180cm – 240cm)
Spread 4' – 6' (120cm – 180cm)
Spacing 72" – 84" (180cm – 210cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Plant of Merit, Showy, Evergreen, Fruit & Berries
Tolerance Deer, Drought, Salt
Garden Uses Beds and Borders, Patio and Containers
Garden Styles Coastal Garden, Mediterranean Garden

Great Plant Combination Ideas with Palms - Cycads

Guides with Palms - Cycads

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