Scientific Name
Operculicarya pachypus Eggli
Scientific Classification
Family: Anacardiaceae
Subfamily: Spondiadoideae
Genus: Operculicarya
Description
Operculicarya pachypus is a small, deciduous, pachycaul tree up to 4 feet (1.2 m) tall. It is similar to the much more common Operculicarya decaryi. Compared to O. decaryi, it tends to stay more compact, with the trunk growing in a conical shape and looks like an odd bonsai tree. The branches are glabrous, zig-zagged, and its roots often swell to form unique, contorted, and twisted designs. The green leaves are very tiny, which work proportionally for that "bonsai" look. The flowers are small, yellow-green, and appear in late winter.
Hardiness
USDA hardiness zones 10b to 11b: from 35 °F (+1.7 °C) to 50 °F (+10 °C).

Photo via baobaballey.com
How to Grow and Care
Elephant Tree is quite a strong plant, and because it is grown in rather harsh conditions, it is a relatively adaptable species. This plant is drought tolerant and does well in full sun in most places. It cannot tolerate freezing conditions.
It does not need an enormous amount of water, but during the growing season, it can enjoy quite a lot of water. Water a bit more regularly if in a container. Its roots will swell underneath the soil, and you will only know that is the case when you repot the plant.
In cold winters, plants will be more or less deciduous but will remain evergreen in warmer locations. Avoid watering during periods of dormancy.
Like most caudiciforms, this plant enjoys a fast-draining potting soil. Avoid peat if possible, and amend the soil with drainage material such as pumice, expanded shale, perlite, or a similar product. See more at How to Grow and Care for an Elephant Tree (Operculicarya decaryi).
Origin
Operculicarya pachypus is native to south-western Madagascar.
Links
- Back to genus Operculicarya
- Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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