UK compost
What compost for peperomia caperata 'luna red' in the UK?
Peperomia caperata 'Luna Red'
More about peperomia caperata 'luna red' in the UK
Which compost peperomia caperata 'luna red' needs
For peperomia caperata 'luna red' the mix to buy is peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use a loose blend of peat/coco coir with plenty of perlite and a little bark or grit. The fine, shallow roots need an open, fast-draining medium; dense, water-holding soil is the main cause of crown and root rot in this cultivar.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 peperomia caperata 'luna red' 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?
Peperomia caperata 'Luna Red' 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 peperomia caperata 'luna red' soil & potting-mix guide.
Compost for Peperomia caperata 'Luna Red' in the UK — frequently asked questions
What compost should I use for peperomia caperata 'luna red' in the UK?
Use peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use a loose blend of peat/coco coir with plenty of perlite and a little bark or grit. The fine, shallow roots need an open, fast-draining medium; dense, water-holding soil is the main cause of crown and root rot in this cultivar. 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 peperomia caperata 'luna red'?
Not on its own — multipurpose compost holds too much water for peperomia caperata 'luna red' 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 peperomia caperata 'luna red' perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does peperomia caperata 'luna red' need grit or perlite added?
Yes — peperomia caperata 'luna red' 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 peperomia caperata 'luna red' need?
Always a pot with drainage holes. Light, airy, well-draining peat or coir 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 peperomia caperata 'luna red' care
See the full peperomia caperata 'luna red' care guide, its UK watering and UK hardiness.