UK compost
What compost for stapelia hirsuta var. vetula in the UK?
Stapelia hirsuta var. vetula
More about stapelia hirsuta var. vetula in the UK
Which compost stapelia hirsuta var. vetula needs
For stapelia hirsuta var. vetula the mix to buy is peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use a gritty blend of cactus compost with added pumice, perlite or coarse sand. Good aeration around the shallow roots is critical, as the genus is highly prone to basal stem rot in dense, wet soil.In British garden centres the bagged growing medium is sold simply as “compost” (multipurpose, ericaceous, or loam-based John Innes), which is a different thing from the rotted garden “compost” you make in a heap — for a pot you want the bagged kind.
Peat-free compost
Buy peat-free. The sale of peat compost to home gardeners is being phased out across the UK, and the RHS recommends peat-free on environmental grounds. A good peat-free multipurpose grows stapelia hirsuta var. vetula perfectly well; the one habit to change is watering — peat-free dries faster at the surface while still moist below, so check by feel a knuckle deep rather than trusting the look of the top.
Ericaceous or multipurpose?
Stapelia hirsuta var. vetula does not want a rich, water-holding compost — it wants sharp drainage. Cut peat-free multipurpose roughly half-and-half with horticultural grit, sharp sand or perlite, and always pot into a container with drainage holes. A "cactus and succulent" bagged mix is a ready-made shortcut.
For the full recipe, pH and drainage detail (US wording), see the stapelia hirsuta var. vetula soil & potting-mix guide.
Compost for Stapelia hirsuta var. vetula in the UK — frequently asked questions
What compost should I use for stapelia hirsuta var. vetula in the UK?
Use peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use a gritty blend of cactus compost with added pumice, perlite or coarse sand. Good aeration around the shallow roots is critical, as the genus is highly prone to basal stem rot in dense, wet soil. In UK garden centres this is sold simply as "compost" — the bagged growing medium, not garden-made leaf-mould — so match the description above rather than a brand.
Can I use ordinary multipurpose compost for stapelia hirsuta var. vetula?
Not on its own — multipurpose compost holds too much water for stapelia hirsuta var. vetula and will rot the roots. Cut it roughly 50:50 with horticultural grit, sharp sand or perlite so it drains fast.
Should the compost be peat-free?
Yes. Sales of peat compost to home gardeners are being phased out in the UK, and the RHS recommends peat-free for environmental reasons. Modern peat-free multipurpose composts grow stapelia hirsuta var. vetula perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does stapelia hirsuta var. vetula need grit or perlite added?
Yes — stapelia hirsuta var. vetula must have sharp drainage. Add about one part horticultural grit or perlite to one part compost, and always use a pot with drainage holes.
What pot and drainage does stapelia hirsuta var. vetula need?
Always a pot with drainage holes. Free-draining cactus and succulent mix. Stand it on a saucer, empty any water that collects after watering, and never leave the pot sitting in a full outer cover — waterlogged compost in a cool UK room is the commonest cause of root rot.
More stapelia hirsuta var. vetula care
See the full stapelia hirsuta var. vetula care guide, its UK watering and UK hardiness.