Best Blackcurrant Varieties for Scotland

A blackcurrant flower opens on a bare stem in April, weeks before the leaves have fully unfurled, with nothing but its own petals between it and a late frost. If that frost bites, the flower dies and the fruit that would have hung from it in July never forms, one cold night can take a season's harvest before it's even started. That single vulnerable moment is the reason blackcurrant breeders spend decades chasing one trait above almost any other: a flower that opens later, once the risk has mostly passed.

Why this variety list needed a second look

Blackcurrants already get unusually thorough coverage on this site: the growing guide profiles five varieties, Ben Connan, Ben Hope, Ben Gairn, Big Ben and Ben Sarek, and four of those carry direct Hutton breeding citations tracing back to the James Hutton Institute in Dundee, which has run the UK's blackcurrant breeding programme since the 1950s. But two things were left open. First, Ben Hope and Ben Gairn's Award of Garden Merit status was unresolved, absent from the data, but never actually confirmed either way. Second, and more interesting: modern blackcurrant varieties are bred to flower later, specifically because that suits cold locations, but nothing named which variety, in absolute terms, actually delivers on that. The second question turns up a sixth variety, new to this site, that answers the frost question better than any of the five already covered.

AGM status, resolved

Neither Ben Hope nor Ben Gairn holds the Award of Garden Merit. Each variety's own plant page carries no AGM badge, the general blackcurrant growing page doesn't break the award down by cultivarA plant variety that arose or was bred under cultivation and is kept true by deliberate propagation, rather than a naturally occurring wild species. Full definition →, so this only shows up per-variety. Some blackcurrants do carry AGM, Ben Connan and Big Ben both do, so the absence on Ben Hope and Ben Gairn is a real result, not an unchecked gap. Both remain genuinely good varieties for the disease-resistance traits they were bred for: an AGM measures wider UK garden merit across several trial seasons, and a variety without one can still be the right choice for a narrower, specific reason, which is the case for both of these.

One flag worth stating plainly rather than quietly fixing: this site's own blackcurrant growing guide previously listed Ben Sarek as an AGM variety, but Ben Sarek's own plant page carries no AGM badge or mention, checked directly, including a full search of the page text for "AGM" and "Award of Garden Merit," neither present. That guide has now been corrected.

Named varieties compared

Ben Gairn's own plant page describes it as "early-flowering and ripening," which sits at odds with any assumption that being a Hutton-bred modern variety automatically means later flowering. Reversion-virus resistance is Ben Gairn's real, sourced strength, frost avoidance isn't part of its case.

The late-flowering story actually has a named answer — just not among the five already covered

What none of the five varieties above carries is a claim in absolute terms rather than only relative to another cultivar.

The James Hutton Institute's blackcurrant breeding programme states the answer directly. Its early objective was "to produce improved germplasm with cold tolerance, especially in the spring... and fungal disease resistance," pursued specifically "by the introduction of a late-flowering character into many of... [Hutton's] varieties, reaching its highest expression in 'Ben Tirran' released in 1990." Ben Tirran flowers late and is "less susceptible to frost damage" as a direct result, a real, purchasable garden plant, not a commercial-only variety: working nursery suppliers stock it, and it turns up at ordinary specialist fruit nurseries.

That's a genuine, absolute frost-avoidance claim, backed on both the breeding rationale and the garden-facing trait, but it belongs to Ben Tirran, a variety this site hadn't previously covered, not to any of Ben Connan, Ben Hope, Ben Gairn, Big Ben or Ben Sarek. Those five are still real, and four are still Hutton-provenanced. Ben Connan and Big Ben are both named on the general growing page as examples of the "flower later" generation, but neither variety's individual plant page states an actual flowering month or a frost-escape claim the way Ben Tirran's does. Worth being precise about what's proven and what isn't: pushing flowering later than Ben Tirran's point starts costing yield, per Hutton's own breeding page, which is also why the programme's recent focus has shifted toward low-chill tolerance for milder winters rather than pushing later flowering further. Provenance and a named trait are two different things, and this is one case where the trait itself, not just the Scottish breeding story, is directly sourced for a specific variety.

For contrast: Baldwin, an older commercial blackcurrant variety still grown in some gardens, is noted as susceptible to both mildew and frost, the exact combination the newer Hutton varieties were bred to move away from, and a useful reminder that "blackcurrant bush" doesn't automatically mean frost-resistant.

Disease resistance as the other real decision point

Where a garden's real risk isn't frost but disease, the choice runs differently. Big bud mite is the vector for reversion virus, the most damaging blackcurrant disease and one with no cure, infected bushes have to be removed. Ben Hope's Ce gene gives it real resistance to the mite itself, which matters because it interrupts the route the virus spreads by, not just the symptom. Ben Gairn takes the opposite angle: it was bred for direct resistance to reversion virus rather than resistance to the mite that carries it. Where powdery mildew or currant and gooseberry leaf spot are the recurring problem instead, Ben Connan's resistance to both is the more relevant trait, and pruning for an open bush with good airflow helps every variety regardless of its bred-in resistance.

Currant aphids distort and blister leaves but, unlike aphids more broadly, don't spread plant viruses themselves, tolerable on most varieties. Birds will take a crop from any variety equally; netting is the only real answer, not a trait any cultivar carries.

Soil pH

No specific pH figure is published for blackcurrants. The only stated guidance is that they "will cope in most other soil conditions" beyond their preference for moist, well-drained ground, broad enough that this site categorises blackcurrant pH tolerance as simply "tolerant" rather than citing a numeric range, since no source gives one to cite.

Which one for your situation

• Most gardens, no specific problem to solve: Ben Connan. Compact, AGM, resistant to the two most common fungal problems, and an early cropper.
• Frost-prone site, a hollow, an east-facing slope, an upland garden, or anywhere the region's last frost date in this site's frost dates guide runs late: Ben Tirran, for the strongest sourced late-flowering claim of any blackcurrant with real Scottish breeding provenance, accepting that it has no AGM and needs ordering from a specialist fruit nursery rather than a general garden centre.
• Gall mite or reversion virus has been a problem locally: Ben Hope (mite resistance) or Ben Gairn (direct virus resistance), both without AGM, but both bred specifically to solve this.
• Very small garden or a container: Ben Sarek or Ben Gairn, the two most compact varieties in this list.

Full planting, pruning, and pest management detail is in the blackcurrant growing guide, this piece is only about choosing which one to plant.

Common questions

Sources