Shrub · Grossulariaceae
Currant
Ribes rubrum
Cold-hardy and quietly generous, the currant brings a harvest of tart berries to the heart of a kitchen garden.
Full sun
Every 5–7 days
USDA 3–7
3–6 ft · 0.9–1.8 m
Overview
The currant is a small deciduous shrub prized for the clusters of glossy berries that hang along its branches in early summer, an easy anchor for a productive corner of the garden. It belongs to the genus Ribes, the same family circle as the gooseberry, and the garden kinds divide into the bright red and pale white forms of Ribes rubrum and the darker, muskier black currant, Ribes nigrum. The fruit is sharp and tart fresh, which is precisely why it earns its keep in the kitchen as jam, jelly, juice, or a pie.
This is a shrub for the cooler garden, and it wears that role beautifully. It comes through winters down to -40°F (-40°C) and crops well in the cool, short summers of USDA zones 3 to 7, where more delicate fruit falters. Staying compact at 3 to 6 feet (90 to 180 cm) tall, it slots into a border or a kitchen-garden bed, takes a fair amount of shade, and settles in for years of quiet productivity.
One consideration shapes where it belongs in the landscape. Currants are an alternate host for white pine blister rust, a disease that needs both a currant and a five-needle white pine to complete its cycle, so some states still restrict planting, black currant most of all. A look at the local rules and a thoughtful spot kept clear of white pines settle the matter, leaving you one of the most forgiving fruits a new gardener can grow.
Care
The short version: site it in full sun to part shade, in rich well-drained soil kept evenly moist at about an inch of water a week, with one unhurried late-winter prune a year to keep the canes young and the fruit dependable.
Light
Currants give their fullest crop in full sun, the obvious choice for an open, productive bed, yet they take partial sun and even partial shade more gracefully than most fruit, which makes them useful in a part-shaded corner. In a hot-summer garden, a little afternoon shade keeps the shallow roots comfortable.
Water
Plan on about 1 inch of water a week, and keep the bush from drying out while the fruit is setting. The shallow, fibrous roots appreciate a tidy layer of mulch, which holds moisture and keeps the soil cool while finishing the bed neatly.
Soil
Give the currant rich, well-drained loam generous with organic matter, the kind of well-prepared bed that rewards a little effort up front. A slightly acidic pH of 6.0 to 6.5 suits it best.
Temperature
Few fruiting shrubs are as unbothered by cold, with the currant taking winters as low as -40°F (-40°C) and tolerating summer warmth up to about 86°F (30°C). It performs best in a garden where the summers stay cool.
Humidity
Ordinary garden humidity around 40% to 60% asks nothing special of you. What truly matters is open air moving through the planting, since a stagnant, crowded spot is where mildew and rust find their opening.
Feeding
A single yearly feeding keeps the bush content, given in late fall or early spring as a few shovelfuls of composted manure or a balanced nitrogen source per plant. Work it around the bush rather than into the planting hole, where it can burn the roots.
Pruning
Reserve a quiet hour each year for pruning in late winter while the bush is dormant. Fruit forms on 1-, 2-, and 3-year-old wood, so keep 3 to 4 canes of each age and remove anything older than 3 years to keep the shrub shapely and renewing.
Repotting
In most gardens the currant lives in the ground and never needs repotting. A container specimen on a patio or terrace should move up every 2 to 3 years while dormant, sooner if the roots circle or the pot dries out quickly.
Size & spacing
A mature bush settles at 3 to 6 feet (90 to 180 cm) tall and spreads 3 to 5 feet (90 to 150 cm) wide, a tidy footprint for a border or kitchen bed. Allowing each plant that room keeps the air moving and the planting healthy.
When to plant
The currant keeps a cool-season calendar that maps neatly onto the gardening year. Settle dormant plants into their spot in late fall or early spring, look for the modest greenish flowers in April and May, and fold the season's berries into the kitchen through June and July.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Late fall or early spring while plants are dormant, using 1- or 2-year-old stock
- Harvest: Greenish flowers in spring (April to May); berries ripen June to July
Hardiness
USDA hardiness zones: 3–7
Temperature: down to -40°C
Troubleshooting
A currant in a well-tended garden rarely gives much grief, and what trouble there is tends to gather on the leaves and canes, where it shows early. Knowing the handful of common problems below lets you step in before any of them takes hold. Match what catches your eye, then act while a small intervention still counts.
Orange flecks on leaves with an early autumn fall
Yellow-orange pustules paired with leaves dropping too soon signal white pine blister rust, where the currant plays only half the role. The fungus must reach a five-needle white pine to finish its life cycle, so an infected bush carries the disease to nearby pines. Remove badly infected plants, place currants well away from white pines, and choose resistant or immune cultivars for an untroubled planting.
Fix:
- Remove and destroy heavily infected Ribes plants
- Plant rust-resistant or immune cultivars
- Keep currants away from white pines
A pale powdery bloom on leaves and shoot tips
A soft white film dusting the leaves and distorting the new shoots is powdery mildew, a fungus drawn to crowded, shaded growth. Opening the bush with a little pruning lets air move through and changes the conditions in your favor, and clipping out the worst-coated tips clears the rest. Keep a labeled fungicide in reserve for the uncommon case when the infection truly gets ahead of you.
Fix:
- Prune to open the canopy for airflow
- Remove and destroy infected shoot tips
- Apply a labeled fungicide only if infection is severe
A lone cane wilting from a hollowed center
When one cane wilts and fails while the rest of the bush stands fine, the currant borer is usually behind it, a clearwing moth larva working through the core. Cut a failing cane open and the hollow channel gives it away. Prune the affected canes to the ground and burn them, then keep the bush fresh each year by clearing the old wood the borers settle into.
Fix:
- Prune out and destroy infested canes to the ground
Red, puckered blistering across spring leaves
Red welts raised on the upper leaf are the calling card of the currant aphid feeding quietly beneath. Turn a leaf and you will find the small colonies gathered along the veins. A measured spray of insecticidal soap or horticultural oil on the undersides resolves it, and resident ladybugs and other predators see to whatever remains.
Fix:
- Spray insecticidal soap or horticultural oil on undersides
- Encourage beneficial predators such as ladybugs
Toxicity
This is a plant you can place anywhere a household gathers. The true garden currant is safe through and through, its berries are a food crop, and neither fruit nor foliage threatens pets, livestock, or people. The lone caution sits well away from the garden, since the dried 'currants' on the baking shelf are really small raisins, and grapes and raisins do harm dogs, so keep those out of reach.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats Safe
The true Ribes currant holds no danger for cats. Most cats pass the shrub by, and a nibbled leaf does no harm.
Dogs Safe
The living plant and its fresh berries are safe for dogs. A dog that overindulges in the fruit might have a brief spell of loose stool, nothing more.
Horses Safe
Horses can browse the foliage without trouble, as nothing in the currant bush is poisonous to them.
Rabbits Safe
Rabbits may take the leaves and fruit safely. Keep the helpings modest, since too much sweet fruit can unsettle a small gut.
Livestock Safe
Cattle, goats, and sheep come to no harm from the plant and can graze around it freely.
Birds Safe
Birds are drawn to ripe currants, and the fruit suits them well, so net the bush if you mean to keep a share of the crop for the kitchen.
People Safe
For people the berries are a genuine food crop, enjoyed fresh or cooked into jams, jellies, and juice, with nothing here to give pause.
No special handling needed for the living Ribes shrub or its fresh berries.
Varieties
Currants arrive in red, white, and black, with a few named cultivars that bring their own character to a planting. The selections below are the ones most likely to find a place in your garden.
Black currant (Ribes nigrum)
A close cousin grown for its aromatic, musky black berries, it takes white pine blister rust far more readily than red currant and is restricted or banned outright in some US states.
White currant
A pale, see-through form of Ribes rubrum with a sweeter, milder flavor than the red type, lovely for a softer note in the garden.
Red Lake
A heavy-cropping red currant that hangs its bright fruit in long clusters called strigs, and it appears in more gardens than almost any other.
Titania
A vigorous black-currant type that reaches around 6 feet and shrugs off disease better than most, a dependable choice for a productive border.
Companions
Currants get along with their fellow Ribes but should be kept clear of white pines, which they trade a serious disease with.
Plant near
Gooseberry (Ribes uva-crispa): A fellow Ribes with the same cool-climate, partial-shade-tolerant culture, so it grows easily alongside currants under matching care.
Keep apart
Eastern white pine (Pinus strobus): Ribes is the alternate host for white pine blister rust; planting currants near 5-needle white pines spreads the disease to the pines.
How to propagate
Expanding a currant planting is an easy pleasure, and because both common methods are clonal, every new plant carries the parent's qualities into the next corner of the garden.
Stem cuttingsEasy
Take dormant hardwood cuttings in late winter; semi-hardwood cuttings can be taken mid-July to first freeze · Roots form within one growing season; a transplantable plant in 1 to 2 years
Cuttings are the classic route to more currants, and they come true to the parent. Take 8 to 10 inch lengths of mature, dormant wood in late winter, or softer semi-hardwood pieces from mid-July to the first freeze. They root over a single growing season and are ready to take their place as plants in 1 to 2 years.
LayeringEasy
Spring through summer · Rooted layers ready to sever the following dormant season
Layering is simpler still and almost effortless. Bend a low outer branch to the soil and pin it any time from spring through summer, and it roots quietly where it meets the ground. Free the new plant from its parent the following dormant season, ready to set elsewhere in the garden.
Myths
Currants are dangerous to dogs because dried currants are toxic.
The unease traces back to a shared name. The dried 'Zante currants' sold for baking are really raisins made from tiny Corinth grapes, and those do harm dogs. The true garden currants of the genus Ribes, red, white, and black, are an entirely different plant and are safe.
Growing any currant is illegal in the United States.
The old federal ban, brought in to slow white pine blister rust, was lifted back in 1966. The matter now rests with your state, and it is black currant (Ribes nigrum) that draws the most restrictions, since it carries the rust more readily than the red or white kinds.