UK compost
What compost for scaevola aemula 'bombay dark blue' in the UK?
Scaevola aemula 'Bombay Dark Blue'
More about scaevola aemula 'bombay dark blue' in the UK
Which compost scaevola aemula 'bombay dark blue' needs
For scaevola aemula 'bombay dark blue' the mix to buy is peat-free ericaceous (lime-free) compost. Needs sharp drainage; grows in average to poor soil of pH 5.5-6.5 and tolerates sandy ground. Heavy, wet soil causes root rot. In pots use a free-draining peat-free mix; it dislikes overly rich, waterlogged media.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 scaevola aemula 'bombay dark blue' 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?
Scaevola aemula 'Bombay Dark Blue' 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 scaevola aemula 'bombay dark blue' soil & potting-mix guide.
Compost for Scaevola aemula 'Bombay Dark Blue' in the UK — frequently asked questions
What compost should I use for scaevola aemula 'bombay dark blue' in the UK?
Use peat-free ericaceous (lime-free) compost. Needs sharp drainage; grows in average to poor soil of pH 5.5-6.5 and tolerates sandy ground. Heavy, wet soil causes root rot. In pots use a free-draining peat-free mix; it dislikes overly rich, waterlogged media. 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 scaevola aemula 'bombay dark blue'?
No — scaevola aemula 'bombay dark blue' 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 scaevola aemula 'bombay dark blue' perfectly well — they dry a little faster at the surface, so check moisture by feel rather than by the look of the top.
Does scaevola aemula 'bombay dark blue' 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 scaevola aemula 'bombay dark blue' need?
Always a pot with drainage holes. Light, free-draining soil or potting 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 scaevola aemula 'bombay dark blue' care
See the full scaevola aemula 'bombay dark blue' care guide, its UK watering and UK hardiness.