Myrtillocactus geometrizans (Blue Myrtle Cactus, Blue Candle, Whortleberry Cactus)

Botanical Information

FamilyCactaceae
GenusMyrtillocactus
Speciesgeometrizans
SynonymsCereus pugioniferus, Cereus geometrizans, Myrtillocactus grandiareolatus
CategoryTropicals
OriginCentral Mexico to Oaxaca.

Details

USDA Hardiness Zone9b - 11
USDA Hardiness Ref.
Canadian Hardiness ZoneRequires cool season protection under glass.
Canada Hardiness Ref.
RHS Hardiness ZoneH3
RHS Hardiness Ref.
Temperature (°C)-4
Temperature (°F)20
Height5 m
Spread1 m
GrowthSlow

Description and Growing Information

ShapeCompact-mounding.
LandscapeIn a potted succulent collection, as a potted outdoor patio plant, a rock garden accent piece or as a specimen.
PropagationBy seed or by cuttings in summer.
CultivationPlant under in sun to partial shade in an extremely well-draining soil, mixed with gravel to ensure adequate drainage.
PestsNo known pests or diseases.
Notable SpecimensMuttart Conservatory, Edmonton, Alberta, Canada.
HabitatArid deserts and plains.
Bark/Stem DescriptionFleshy stems covered in spines.
Flower DescriptionSmall non-showy flowers.
Fruit DescriptionSmall edible berries around 1 inch in diameter.
Colour DescriptionBluish-green flesh with tan to brown spines.
Texture DescriptionSpiny to smooth.

Photographs