UK compost
What compost for cross-leaved heath in the UK?
Erica tetralix
More about cross-leaved heath in the UK
Which compost cross-leaved heath needs
For cross-leaved heath the mix to buy is peat-free ericaceous (lime-free) compost. Requires pH 4.0–5.5. Naturally grows in sphagnum bogs and wet heathland. Use a peat-free ericaceous compost mixed with water-retaining materials (such as bark or coir) for containers. The one heather that actively benefits from moisture-retentive rather than free-draining soil.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 cross-leaved heath 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?
Cross-leaved heath 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 cross-leaved heath soil & potting-mix guide.
Compost for Cross-leaved heath in the UK — frequently asked questions
What compost should I use for cross-leaved heath in the UK?
Use peat-free ericaceous (lime-free) compost. Requires pH 4.0–5.5. Naturally grows in sphagnum bogs and wet heathland. Use a peat-free ericaceous compost mixed with water-retaining materials (such as bark or coir) for containers. The one heather that actively benefits from moisture-retentive rather than free-draining soil. 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 cross-leaved heath?
No — cross-leaved heath 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 cross-leaved heath perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does cross-leaved heath 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 cross-leaved heath need?
Always a pot with drainage holes. Acid, moisture-retentive, peaty or boggy soil. 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 cross-leaved heath care
See the full cross-leaved heath care guide, its UK watering and UK hardiness.