UK compost
What compost for stromanthe sanguinea magicstar in the UK?
Stromanthe sanguinea 'Magicstar'
More about stromanthe sanguinea magicstar in the UK
Which compost stromanthe sanguinea magicstar needs
For stromanthe sanguinea magicstar the mix to buy is peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Blend peat-free coir or peat with perlite and a little fine bark or compost for an airy, water-retentive medium that drains freely. Aim for slightly acidic pH around 6.0-6.5. A pot with drainage holes is essential to prevent root rot.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 stromanthe sanguinea magicstar 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?
Stromanthe Sanguinea Magicstar 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 stromanthe sanguinea magicstar soil & potting-mix guide.
Compost for Stromanthe Sanguinea Magicstar in the UK — frequently asked questions
What compost should I use for stromanthe sanguinea magicstar in the UK?
Use peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Blend peat-free coir or peat with perlite and a little fine bark or compost for an airy, water-retentive medium that drains freely. Aim for slightly acidic pH around 6.0-6.5. A pot with drainage holes is essential to prevent root rot. 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 stromanthe sanguinea magicstar?
Not on its own — multipurpose compost holds too much water for stromanthe sanguinea magicstar 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 stromanthe sanguinea magicstar perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does stromanthe sanguinea magicstar need grit or perlite added?
Yes — stromanthe sanguinea magicstar 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 stromanthe sanguinea magicstar need?
Always a pot with drainage holes. Light, moisture-retentive, free-draining aroid-style 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 stromanthe sanguinea magicstar care
See the full stromanthe sanguinea magicstar care guide, its UK watering and UK hardiness.