UK compost
What compost for peruvian bougainvillea in the UK?
Bougainvillea peruviana
More about peruvian bougainvillea in the UK
Which compost peruvian bougainvillea needs
For peruvian bougainvillea the mix to buy is peat-free ericaceous (lime-free) compost. Plant in a well-draining, slightly acidic to neutral mix (pH 5.5–6.5). A blend of loam, coarse grit, and perlite (2:1:1) works well. Bougainvilleas resent sitting in moisture; raised planting or containers with generous drainage holes are ideal.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 peruvian bougainvillea 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?
Peruvian bougainvillea is a lime-hater: it needs an acidic, lime-free ericaceous compost. In ordinary (limey) multipurpose it slowly yellows between the leaf veins as it locks out iron. Buy a bag labelled "ericaceous", and in a hard-water area water with rainwater where you can, since tap water is slightly alkaline.
For the full recipe, pH and drainage detail (US wording), see the peruvian bougainvillea soil & potting-mix guide.
Compost for Peruvian bougainvillea in the UK — frequently asked questions
What compost should I use for peruvian bougainvillea in the UK?
Use peat-free ericaceous (lime-free) compost. Plant in a well-draining, slightly acidic to neutral mix (pH 5.5–6.5). A blend of loam, coarse grit, and perlite (2:1:1) works well. Bougainvilleas resent sitting in moisture; raised planting or containers with generous drainage holes are ideal. 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 peruvian bougainvillea?
No — peruvian bougainvillea needs an acidic, lime-free (ericaceous) compost. Standard multipurpose is too limey and will slowly cause yellowing between the leaf veins (lime-induced chlorosis). Buy a bag labelled "ericaceous".
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 peruvian bougainvillea perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does peruvian bougainvillea need grit or perlite added?
Not essential, but a couple of handfuls of perlite in the mix improves aeration and guards against overwatering — useful on a cool, damp British windowsill where compost stays wet longer.
What pot and drainage does peruvian bougainvillea need?
Always a pot with drainage holes. Gritty, fast-draining loam or cactus 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 peruvian bougainvillea care
See the full peruvian bougainvillea care guide, its UK watering and UK hardiness.