UK compost
What compost for vitis vinifera in the UK?
Vitis vinifera
More about vitis vinifera in the UK
Which compost vitis vinifera needs
For vitis vinifera the mix to buy is peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Thrives in well-drained, even gravelly or chalky soils at pH 6.0-7.0. Dislikes heavy, wet ground. Overly rich soil produces excess leaf at the expense of fruit, so moderate fertility is best.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 vitis vinifera 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?
Vitis vinifera 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 vitis vinifera soil & potting-mix guide.
Compost for Vitis vinifera in the UK — frequently asked questions
What compost should I use for vitis vinifera in the UK?
Use peat-free multipurpose compost cut roughly half-and-half with horticultural grit or perlite. Thrives in well-drained, even gravelly or chalky soils at pH 6.0-7.0. Dislikes heavy, wet ground. Overly rich soil produces excess leaf at the expense of fruit, so moderate fertility is best. 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 vitis vinifera?
Not on its own — multipurpose compost holds too much water for vitis vinifera 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 vitis vinifera perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does vitis vinifera need grit or perlite added?
Yes — vitis vinifera 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 vitis vinifera need?
Always a pot with drainage holes. Free-draining, moderately fertile loam or stony 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 vitis vinifera care
See the full vitis vinifera care guide, its UK watering and UK hardiness.