UK compost
What compost for white princess philodendron in the UK?
Philodendron erubescens 'White Princess'
More about white princess philodendron in the UK
Which compost white princess philodendron needs
For white princess philodendron the mix to buy is peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use potting soil amended with orchid bark, perlite and charcoal for free drainage and air around the roots. This prevents the waterlogging that quickly rots slow-growing variegated stems.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 white princess philodendron 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?
White Princess Philodendron 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 white princess philodendron soil & potting-mix guide.
Compost for White Princess Philodendron in the UK — frequently asked questions
What compost should I use for white princess philodendron in the UK?
Use peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Use potting soil amended with orchid bark, perlite and charcoal for free drainage and air around the roots. This prevents the waterlogging that quickly rots slow-growing variegated stems. 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 white princess philodendron?
Not on its own — multipurpose compost holds too much water for white princess philodendron 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 white princess philodendron perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does white princess philodendron need grit or perlite added?
Yes — white princess philodendron 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 white princess philodendron need?
Always a pot with drainage holes. Airy, chunky aroid 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 white princess philodendron care
See the full white princess philodendron care guide, its UK watering and UK hardiness.