Redcurrants and Whitecurrants Garden Myths: What Holds Up

“Prune redcurrants and whitecurrants the same hard way as blackcurrants, cutting the oldest stems to the base every winter”

Redcurrants and whitecurrants fruit at the base of the previous year's shoots and on spurs on older wood, so pruning keeps a permanent framework instead. The target shape is an open-centred, goblet-shaped bush with 8-10 main branches, maintained by reducing the previous season's growth and cutting side-shoots back to one or two buds — not by removing whole old stems at the base the way blackcurrants are renewed.

Our read Blackcurrants and redcurrants look similar enough on the shelf that the pruning habit is easy to carry straight over. They fruit on different wood, so the same hard renewal cut here would remove the wood the crop is actually counting on.

What to do: Keep a permanent framework of branches on a redcurrant or whitecurrant bush, pruning side-shoots back rather than cutting whole old stems out at the base each winter.

“Whitecurrants are a genuinely different crop from redcurrants and need their own separate growing routine”

Whitecurrants are a form of redcurrant, the same species (Ribes rubrum), grown identically: same site, same spacing, same pruning, same feeding. The only real difference is the fruit's colour and a shorter list of named varieties.

Our read Two different-coloured currants sold as separate plants look like they should need separate advice. They don't — one routine covers both.

What to do: Grow redcurrants and whitecurrants side by side using exactly the same planting, pruning and care routine, choosing between them on fruit colour and variety rather than any difference in how they're grown.

“Pick redcurrants and whitecurrants one berry at a time to avoid damaging the fruit”

These currants are harvested by cutting whole fruit trusses, known as strigs, rather than picking individual berries. Modern varieties ripen the whole truss at roughly the same time, which is exactly what makes cutting the strig practical rather than fiddly.

Our read Individual small berries look like they'd need individual picking, the way you'd pick a raspberry. Currants grow in clusters specifically suited to being cut as a unit.

What to do: Cut whole strigs free with scissors or secateurs rather than stripping individual currants by hand, and pick on a dry day since wet fruit spoils faster.

“Redcurrants and whitecurrants need full sun to crop well, the same as most soft fruit”

RHS names sun or light shade as suitable for both redcurrants and whitecurrants directly. Gardener's World goes further, stating plants should still crop well in semi-shade even though a sunny spot is preferable.

Our read A sunny wall or bed often gets claimed by the crops that genuinely need it, like sweet cherries or dessert apples. Currants are a real option for whatever is left over.

What to do: Use a partially shaded bed for redcurrants or whitecurrants with reasonable confidence, reserving full sun for crops that have a stronger stated need for it.

“Dig sand or grit into heavy clay to break it up”

The quantities involved make this hopeless at garden scale. Meaningfully diluting a soil that is 40 per cent clay takes around 250kg of grit or gravel per square metre. A barrowload does nothing, and adding modest amounts can destabilise the structure and leave the ground harder to work than before you started.

What to do: Add bulky organic matter instead: manure or composted bark, dug in generously. Raise beds to lift roots above the wet, and consider not digging at all. Those three do what the sand was supposed to do, and they compound each year rather than needing repeating.

In Scotland: Heavy clay runs right through the Central Belt, so this is one of the most expensive mistakes a Scottish grower can make. Two tonnes of grit for a small bed is not a purchase anyone makes twice.

“On clay, dig a big hole and fill it with grit so the roots drain”

This does the opposite of what it promises. A free-draining pocket surrounded by clay has nowhere to drain to, so it fills and holds water like a bucket sunk in the ground: the hole becomes a sump and the roots sit in it and rot.

What to do: Plant at the same level as the surrounding soil and improve the whole bed rather than one hole. Where drainage is genuinely bad, raise the bed so the roots sit above the wet instead of in a pocket of it.

In Scotland: Worth knowing here because our rainfall keeps that pocket topped up. In a dry climate a sump might drain between downpours; through a Scottish autumn it simply stays full.

“You have to dig the ground over each year to keep the soil fertile”

Digging works against fertility rather than for it. Turning the ground releases soil nitrogen and damages the soil's biology. The structure that fungi, worms and roots build up over a season is undone every time the spade goes through it.

What to do: Leave the ground alone and feed it from the top. Spread compost or well-rotted manure on the surface and let the soil life pull it down. Dig only where you actually need to, such as lifting root crops or clearing perennial weeds.

In Scotland: There is a practical bonus here: undug ground carries weight better and warms marginally earlier in spring than freshly turned wet soil, which matters when the season is already short.

“Peat-free compost doesn't grow plants as well as the peat stuff”

This was a fair complaint a decade ago and it has not aged well. Peat-free quality has greatly improved in recent years, and dedicated research has found some carnivorous plants grow better in peat-free mixes than in peat. What is true is that peat-free behaves differently: the watering and feeding requirements are not the same, because the ingredients have different physical and chemical properties from peat.

Our read Most bad experiences with peat-free are a watering problem rather than a compost problem. It dries differently, so the habits you built on peat will let you down for a season until you adjust.

What to do: Read the bag rather than assuming, since feeding and watering advice genuinely varies between mixes. Buy fresh: old stock breaks down and performs worse regardless of what it is made of. If one brand disappoints, try another rather than writing off the category.

In Scotland: This matters more here than almost anywhere in Britain. Scotland holds a great deal of the UK's peat, those peatlands are major carbon stores, and peat-based compost comes out of them. The performance excuse for buying peat no longer holds up.

“Plants do better in pots than in the ground”

A container limits how far roots can spread and cuts the plant off from the reservoir of moisture and nutrients that open ground provides, increasing the need for both watering and feeding. You are taking on work the soil would have done for free.

Our read Pots are a solution to a problem, not an upgrade: no ground, bad drainage, a crop that needs containing, or somewhere warm against a wall. Chosen for those reasons they are excellent. Chosen by default they make the job harder.

What to do: Use the ground where you have it. Where you do use pots, go bigger than feels necessary, expect to water far more often, and feed through the season because there is no soil reserve to draw on.

“Strong-smelling plants confuse pests and hide your crop”

This is the theory underneath half of every companion planting chart, and it is the wrong mechanism. Research at Wellesbourne, Britain's long-standing centre for brassica and carrot pest work, found that insects hunting a host land on green and avoid bare brown soil. Colour, size and shape decide where they settle. Artificial green plants, and even green paper releasing nothing at all, disrupt them as well as living companions do, and aromatic plants perform no better than bland ones.

What to do: Stop choosing companions by scent. If ground cover is what disrupts the pest, the useful question is whether something low and green grows between your rows, not whether it smells of anything.

“Watering in sunshine scorches the leaves”

Water droplets do not focus sunlight enough to burn foliage. Scorch on new plants comes from insufficient hardening off far more often.

What to do: Water whenever the plant needs it. Watering at ground level rather than over the leaves is still worth doing, but for disease and evaporation reasons, not for scorch.

In Scotland: Rarely the limiting factor here anyway, though it matters under cover, where watering habits drive humidity and therefore disease.

“Coffee grounds acidify your soil and feed your plants”

Grounds do contain nitrogen, phosphorus, potassium and magnesium, so the feeding half is not baseless. The acidifying half is not: their effect on pH is very minor and temporary. Spread thick they cap the soil and block water and air, and residual caffeine can suppress root and shoot growth.

What to do: Put them in the compost bin rather than straight on the bed. If you actually need to change pH, that is a job for lime or sulphur guided by a soil test, not for coffee.

In Scotland: Most Scottish soils are naturally acidic already, so the acidifying claim solves a problem you probably do not have and may worsen one you do.