Currant

Red currant (Ribes rubrum) yields 3-5 lb per mature shrub annually and sells for $6-10/lb at specialty markets where you can find it (USDA AMS Specialty Crop Market News, 2023). Most Americans have never seen one in a grocery store because of a century-old federal restriction that was lifted in 2003 - but state-level regulations and a broken distribution chain mean fresh currants are still largely absent from retail. That scarcity, combined with a 15-20 year productive lifespan on a properly cared-for shrub, makes currants one of the more overlooked perennial investments in the home fruit garden.

What you’re actually growing

Red currant (Ribes rubrum) and white currant are the same species - white is simply an albino color variant with slightly sweeter flavor. Black currant is a separate species (Ribes nigrum) with a stronger, earthier flavor and much higher vitamin C content. All three share the same cultural requirements and the same historical restrictions.

Shrubs reach 3-5 feet tall and wide. They are self-fruitful, so a single plant will set fruit without a second variety for pollination. Most production occurs on 2-3 year old wood. An established shrub at full maturity (year 5+) produces strigs (fruit clusters) that hang like translucent red or white grapes from the branches - they are ornamental enough that some gardeners grow them as landscape plants.

Standard varieties for red include ‘Red Lake’ and ‘Rovada,’ the latter producing exceptionally long strigs that make picking faster. For black currant, ‘Ben Sarek’ and ‘Titania’ are widely grown in North America. Black currant flavor is polarizing but its culinary applications (cassis, jams, cordials) are well-established in European cooking.

The ROI case

At $4.99 for a bare-root or potted start, the initial cost is modest. You will not harvest a meaningful crop in year one. Year two produces 0.5-1 lb. Year three and beyond, expect 3-7 lb per shrub depending on variety, pruning, and soil conditions (Penn State Extension, Small Fruit Production, Agronomy Fact Sheet 43, 2021). At $6-10/lb (USDA AMS, 2023), a single mature shrub returns $18-70 per year. Over a 20-year productive lifespan, the cumulative value of a single shrub is substantial relative to a $5 planting cost.

Black currants sell at a higher premium - often $8-14/lb where available - because the supply is even thinner and the culinary demand from specialty food producers is active.

Growing requirements

Cold hardiness to zone 3 (-40°F) makes currants appropriate for climates where many fruit options fail. They require some winter chill (400-700 hours below 45°F) to set fruit properly, which limits performance in zones 8 and warmer.

Plant in full sun for maximum yield, though currants tolerate 4-6 hours of direct sun better than most fruiting plants - this makes them useful for north-facing beds, fence lines, or the shade of taller trees. Morning sun with afternoon shade suits them in hot climates where summer heat stress is a concern.

Soil pH 5.5-7.0. Currants prefer slightly acidic soil and respond poorly to waterlogged conditions. Amend heavy clay with compost to improve drainage. They are not heavy feeders - excessive nitrogen drives lush, disease-susceptible growth. A balanced spring application at 1 lb per 100 sq ft is usually sufficient.

Prune after leaf drop each fall or in early spring before bud break. Remove wood older than 3 years at the base - this is where production declines. A well-pruned shrub has roughly equal numbers of 1-year, 2-year, and 3-year canes. Skip annual pruning for 2-3 years and you’ll end up with a tangled mass of old, unproductive wood.

What goes wrong

Imported currantworm (Nematus ribesii) is the most destructive currant pest in North America. The greenish caterpillar-like larva defoliates shrubs rapidly starting from the inside of the canopy outward. Check the interior of bushes in late spring. Pyrethrin or spinosad applied at first larval sighting provides good control.

Currant aphid (Cryptomyzus ribis) causes distinctive red blistering on the upper surface of leaves. The aphids feed on the leaf underside. Insecticidal soap or neem controls established colonies. Avoid overhead irrigation that splashes water and encourages aphid movement between plants.

White pine blister rust (Cronartium ribicola) is the reason for the old federal ban. The fungus requires both five-needled white pine (Pinus strobus) and Ribes species to complete its life cycle. Growing currants within 900 feet of white pine is prohibited or discouraged in some states. Check your state’s current regulations - several still have restrictions on black currant specifically, while most have lifted restrictions on red and white currant.

Powdery mildew (Erysiphe grossulariae) appears as white coating on leaves and new growth, especially in dry summers with cool nights. Improve airflow through pruning and avoid overhead irrigation. Sulfur-based fungicides provide preventive control.

Harvest and storage

Harvest entire strigs when the majority of berries are uniformly colored and show the first signs of softening. Red currants at peak have a glossy skin and slight translucency. They are tart at this stage - fully sweet flavor develops only when almost overripe, which most people find acceptable in cooked applications but excessive fresh.

Strigs keep 3-5 days refrigerated. For longer storage, strip berries from strigs and freeze dry on a sheet pan before transferring to bags. Frozen currants hold quality for a year and retain their shape for use in baked goods.

For jelly, currants require no added pectin - natural pectin content is very high. A simple currant jelly is 4 parts juice to 3 parts sugar, cooked to 220°F.

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Related crops: Gooseberry, Arugula

Related reading: First Three Years ROI - how to think about perennial investments where year one returns nothing