UK compost
What compost for dendrobium loddigesii in the UK?
Dendrobium loddigesii
More about dendrobium loddigesii in the UK
Which compost dendrobium loddigesii needs
For dendrobium loddigesii the mix to buy is peat-free multipurpose compost. Grow in a small pot of fine-to-medium bark with some sphagnum and perlite, or mount on cork or a wooden raft to suit its pendulous, climbing habit. Excellent drainage and airflow at the roots are essential. Its compact size means it dries fast on a mount and needs closer watering attention.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 dendrobium loddigesii 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?
Dendrobium loddigesii is straightforward: an ordinary peat-free multipurpose compost is right. For a big specimen or a pot it will live in for years, mixing in some loam-based John Innes No.2 or No.3 adds weight and holds nutrients longer. Ericaceous compost is not needed unless a plant is specifically a lime-hater.
For the full recipe, pH and drainage detail (US wording), see the dendrobium loddigesii soil & potting-mix guide.
Compost for Dendrobium loddigesii in the UK — frequently asked questions
What compost should I use for dendrobium loddigesii in the UK?
Use peat-free multipurpose compost. Grow in a small pot of fine-to-medium bark with some sphagnum and perlite, or mount on cork or a wooden raft to suit its pendulous, climbing habit. Excellent drainage and airflow at the roots are essential. Its compact size means it dries fast on a mount and needs closer watering attention. 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 dendrobium loddigesii?
Yes. A good peat-free multipurpose compost is exactly right for dendrobium loddigesii. For a large or long-term pot you can mix in some John Innes No.2 or No.3 (loam-based) for extra weight and staying power.
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 dendrobium loddigesii perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does dendrobium loddigesii 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 dendrobium loddigesii need?
Always a pot with drainage holes. Fine to medium orchid bark, or mounted. 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 dendrobium loddigesii care
See the full dendrobium loddigesii care guide, its UK watering and UK hardiness.