UK compost
What compost for moses-in-the-cradle (oyster plant) in the UK?
Tradescantia spathacea (syn. Rhoeo spathacea)
More about moses-in-the-cradle (oyster plant) in the UK
Which compost moses-in-the-cradle (oyster plant) needs
For moses-in-the-cradle (oyster plant) the mix to buy is peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use a loose, free-draining potting mix; adding perlite, coarse sand, or bark improves aeration. It is not fussy about pH and adapts to most general-purpose mixes as long as excess water escapes freely and the pot has drainage holes.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 moses-in-the-cradle (oyster plant) 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?
Moses-in-the-Cradle (Oyster Plant) 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 moses-in-the-cradle (oyster plant) soil & potting-mix guide.
Compost for Moses-in-the-Cradle (Oyster Plant) in the UK — frequently asked questions
What compost should I use for moses-in-the-cradle (oyster plant) in the UK?
Use peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use a loose, free-draining potting mix; adding perlite, coarse sand, or bark improves aeration. It is not fussy about pH and adapts to most general-purpose mixes as long as excess water escapes freely and the pot has drainage holes. 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 moses-in-the-cradle (oyster plant)?
Not on its own — multipurpose compost holds too much water for moses-in-the-cradle (oyster plant) 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 moses-in-the-cradle (oyster plant) perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does moses-in-the-cradle (oyster plant) need grit or perlite added?
Yes — moses-in-the-cradle (oyster plant) 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 moses-in-the-cradle (oyster plant) need?
Always a pot with drainage holes. Well-draining houseplant potting 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 moses-in-the-cradle (oyster plant) care
See the full moses-in-the-cradle (oyster plant) care guide, its UK watering and UK hardiness.