Cyphostemma juttae
Cyphostemma juttae
Namibian Grape
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Taxonomy
Family Vitaceae · Genus Cyphostemma
Description
Cyphostemma juttae is a sculptural, caudiciform succulent from Namibia prized for its swollen trunk and glossy, leathery leaves. In warm months it puts on dramatic growth, then drops leaves for a dry winter rest. With bright sun, a gritty mix, and careful watering, it becomes a striking, low-care showpiece for collectors and xeric gardens.
Common Names
Namibian GrapeTree GrapeWild GrapeJutta’s Cyphostemma
Context
nativeRegion
Arid regions of Namibia and southern Angola (Namib Desert margins).
usdaZones
10–11 (9b with protection and kept dry)
companionPlants
Aloe spp., Pachypodium spp., Euphorbia (succulent types), Operculicarya decaryi
culturalUses
Ornamental caudiciform for containers, rock gardens, and xeriscaping; valued by succulent collectors for its pachycaul trunk and bonsai-like form.
Care
Care Requirements
LightFull sun to very bright light; indoors, a south or west window. Acclimate to strong sun to avoid leaf scorch.
WateringIn spring–summer, water deeply then let soil dry completely; roughly every 1–2 weeks depending on heat. Keep almost dry in winter when leafless—only small sips to prevent shriveling.
SoilVery fast-draining, gritty cactus/succulent mix with extra pumice/perlite and coarse sand; shallow, wide pot with excellent drainage.
FertilizerDilute balanced or low-nitrogen cactus feed (1/4 strength) monthly during active growth. Do not fertilize in winter dormancy.
HumidityLow to average; prefers dry air with good airflow.
TemperatureIdeal 65–95°F (18–35°C). Protect from frost; minimum ~45°F (7°C). USDA 10–11 outdoors, or 9b if kept very dry.
Growth & Life Cycle
HabitDeciduous caudiciform/pachycaul succulent shrub to small tree.
Mature SizeIn-ground 3–8 ft (0.9–2.5 m) tall with a swollen trunk 8–24 in (20–60 cm) diameter; smaller in containers (1–4 ft).
Growth RateSlow to moderate during warm season when well lit and watered; very slow in cool conditions.
BloomingSmall greenish-yellow flowers in summer; followed by ornamental red to orange berries.
DormancyWinter dormant/deciduous; keep much drier and cool, resume watering as new growth appears in spring.
Propagation
MethodsSeeds, Stem cuttings
DifficultyModerate (seeds most reliable; cuttings slower and less predictable).
Best SeasonLate spring to early summer; warm temps (75–85°F/24–29°C) improve seed germination.
Maintenance & Notes
PruningMinimal. Remove spent inflorescences and dead or crossing branches. Light shaping best when dormant.
RepottingEvery 2–3 years in late spring as growth resumes. Use a wider, heavy pot; never bury the caudex; step up only one size.
Pests & DiseasesSusceptible to mealybugs, scale, and spider mites; root rot if kept cold/wet; sunburn if not acclimated; occasional edema from overwatering.
ToxicityPotentially toxic to pets and humans if ingested (oxalates/sap can irritate). Handle sap with care; berries are not for consumption.
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