UK compost
What compost for impatiens walleriana 'xtreme salmon' in the UK?
Impatiens walleriana 'Xtreme Salmon'
More about impatiens walleriana 'xtreme salmon' in the UK
Which compost impatiens walleriana 'xtreme salmon' needs
For impatiens walleriana 'xtreme salmon' the mix to buy is peat-free multipurpose compost. A humus-rich, fertile soil or peat-free multipurpose compost enriched with organic matter suits them. Good drainage prevents root rot while organic matter holds the steady moisture impatiens demand.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 impatiens walleriana 'xtreme salmon' 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?
Impatiens walleriana 'Xtreme Salmon' 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 impatiens walleriana 'xtreme salmon' soil & potting-mix guide.
Compost for Impatiens walleriana 'Xtreme Salmon' in the UK — frequently asked questions
What compost should I use for impatiens walleriana 'xtreme salmon' in the UK?
Use peat-free multipurpose compost. A humus-rich, fertile soil or peat-free multipurpose compost enriched with organic matter suits them. Good drainage prevents root rot while organic matter holds the steady moisture impatiens demand. 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 impatiens walleriana 'xtreme salmon'?
Yes. A good peat-free multipurpose compost is exactly right for impatiens walleriana 'xtreme salmon'. 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 impatiens walleriana 'xtreme salmon' perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does impatiens walleriana 'xtreme salmon' 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 impatiens walleriana 'xtreme salmon' need?
Always a pot with drainage holes. Rich, moisture-retentive but well-drained 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 impatiens walleriana 'xtreme salmon' care
See the full impatiens walleriana 'xtreme salmon' care guide, its UK watering and UK hardiness.