Overview
Stenocactus obvallatus is a clump forming cactus succulent in the genus Stenocactus, part of the Cactaceae family, with evergreen foliage. Stenocactus obvallatus grows best in full sun, and tolerates loam and sand soils and any pH. Its UK hardiness is rated H2. Suggested uses include houseplants and conservatory and greenhouse.
About
Stenocactus obvallatus is a clump-forming cultivar of the Stenocactus genus, which includes small, globular cacti native to Mexico. This evergreen plant is noted for its prominent ribs and spines, typical of the genus. It thrives in full sun and requires well-drained, gritty soil, preferring loam or sand with a pH that can be acid, alkaline, or neutral. Best suited for sheltered, south- or west-facing positions, it is ideal for cultivation as a houseplant or in conservatories and greenhouses. In summer, it produces tubular flowers, adding seasonal interest.
Growing conditions
Best soil and position for Stenocactus
- Sunlight
- Full sun
- Soil type
- Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H2
Plant details
Stenocactus obvallatus size, habit and characteristics
- Plant type
- Cactus Succulent, Houseplants
- Habit
- Clump forming
- Foliage
- Evergreen
- Suggested uses
- Houseplants, Conservatory and greenhouse
Care notes
Pruning and caring for Stenocactus obvallatus
- Propagation
- Seed
- Pest resistance
- Mealybugs
- Disease resistance
- Root and stem rots
Frequently asked questions
Where is the best place to plant Stenocactus obvallatus?
Stenocactus obvallatus prefers full sun. It suits sheltered positions.
What soil does Stenocactus obvallatus need?
Stenocactus obvallatus grows best in loam and sand soil. It is happy in soil of any pH. Aim for soil that stays well-drained.
Is Stenocactus obvallatus hardy in the UK?
Stenocactus obvallatus has an RHS hardiness rating of H2, meaning it is tender, tolerating 1–5°C, and needs frost-free protection over winter.
How do I propagate Stenocactus obvallatus?
Seed.
From the Fenn Plants journal
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