Flowering currant (Ribes sanguineum)

Photo: André Karwath aka Aka, CC BY-SA 2.5 · source

Shrub · Currant family (Grossulariaceae)

Flowering currant

Ribes sanguineum · also: Red-flowering currant

Flowering currant is a thornless shrub from western North America that is hung with clusters of pink to red flowers in April, together with its young leaves. At that time it is an important source of nectar for queen bumblebees and bees. It grows 1.5–2.5 m tall, grows quickly and is easy in sun and partial shade. The leaves have a pungent, spicy smell. In summer they are followed by small bluish-black berries, edible but insipid.

Caution: Like other currants, it is an alternate host of white pine blister rust, a fungus that can kill Weymouth pines and other five-needled pines. Do not plant it close to such pines.

  • Light

    Sun or partial shade

    preferably some sun

  • Moisture

    Normal

    no wet feet

  • Legal basis

    Any garden soil

    any pH

  • Hardiness

    Throughout Belgium

    no protection needed

  • Size

    1.5–2.5 m

    tall

  • Flowering

    March–May

Key facts
Pruning monthsApril–May
Height1.5–2.5 m
Native to BelgiumNo, planted
Poisonous to people and petsNot known to be poisonous
FloweringMarch–May

Identify

Flowering currant: how do you recognise it?

Habit
Upright, thornless shrub of 1.5–2.5 m.
Leaf
Alternate, 4–10 cm, round with 3–5 lobes, irregularly toothed, somewhat wrinkled and felted underneath; pungent and spicy when crushed.
Bark
Brown twigs without prickles.
Flower
Hanging to spreading clusters of pink, red or white flowers in April, together with the leaves.
Fruit
Bluish-black berries with a waxy bloom; edible, but insipid.
Difference from blackcurrant
Blackcurrant has greenish flowers and large, black, strongly scented berries.

Flowering: March–May · Pruning: April–May

Identify by feature: Pink blossom · Hanging flower clusters

Looks like it, but isn’t

In your garden

Why grow it?

  • One of the first shrubs to flower: clusters of pink to red flowers in April.
  • Early nectar for queen bumblebees and bees.
  • Easy and fast-growing, in sun or partial shade, on almost any soil.
  • Thornless: also good in an informal flowering hedge.

Flowering currant: where does it grow best?

  • Sun or partial shade; it flowers best in sun.
  • Ordinary garden soil, acid or chalky; neither waterlogged nor bone dry.
  • Allow 2 m width.
  • Not close to Weymouth pines or other five-needled pines (see caution).
Light
Sun or partial shade
Legal basis
Any garden soil
Moisture
Normal
Size
2 m tall, 2 m wide
Hardiness
Throughout Belgium, no protection needed

Goes well with

  • Forsythia: Yellow next to pink in the same weeks: a classic spring pairing.
  • Snowy mespilus: White blossom in April and later berries for the birds.
  • Oregon grape: Yellow flower clusters in spring and evergreen leaves, for the same partial shade.

Good and bad companions

Goes well with

Best kept away from

  • Blister rust alternates between currants and this pine: weymouth pine

Maintenance

Flowering currant: when and how to plant it?

  1. Plant from November to March, bare-root, root-balled or from a pot.
  2. In an informal hedge: one plant per metre.
  3. Plant at the same depth as before, firm the soil and water generously.
  4. After planting, shorten the branches by a third for a bushier shrub.

Care

Watering
In dry spells in the first year; after that only in long dry summers.
Feeding
A little compost in spring is enough.
Mulch
A layer of leaves or wood chips keeps the shallow roots cool and moist.
Renewal
Remove a few old branches every year after flowering: this keeps it free-flowering.

Tip: Plant it where you can see it from the house in April. For deep red, choose ‘King Edward VII’ or ‘Pulborough Scarlet’; ‘White Icicle’ flowers white.

Flowering currant: when to prune it?

Pruning months: April–May.

When: After flowering (April–May).

How:

  • Every year, cut a few of the oldest branches off at the base; this keeps it young and free-flowering.
  • Shorten overlong branches that have flowered back to a strong side branch.
  • Rejuvenate an old, bare shrub over two or three years, removing a third of the oldest branches each time.

Caution: Do not prune in winter or before flowering: you would cut off the flower buds. April–May falls in the nesting season: check for nesting birds first.

Pruning: when and how · Pruning calendar and basic rules

Propagation

Hardwood cuttings
In winter (November–February), push 20–25 cm lengths of twig two-thirds into the ground in a sheltered spot; most root readily.
Softwood cuttings
Soft cuttings taken in June also root easily under glass or plastic.

Flowering currant: how does it get through the winter?

Hardy throughout Belgium: no protection needed.

  • Fully hardy.
  • In winter it is bare; the flower buds are already waiting on the twigs.

Diseases and pests

  • White pine blister rust: Small orange to brown rust spots under the leaves in late summer. Harmless to the currant, but the fungus can attack Weymouth pines nearby.
  • Coral spot: Small pink to orange pustules on dead branches. Cut those branches out into healthy wood and dispose of them.
  • Aphids: Aphids on the young shoots in spring. Let ladybirds and tits do the work, or hose them off with water.
  • Few flowers: An old shrub that is never pruned flowers less. Rejuvenate it by removing old branches every year.

Through the year

  • January: Take hardwood cuttings.
  • March: First flowers; last month for planting bare-root shrubs.
  • April: Full flower; prune after flowering, checking for nests first.
  • May: Last pruning month.
  • June: Take softwood cuttings.
  • August: Bluish-black berries; watch for rust under the leaves.
  • November: Plant.

Use

What can you use it for?

Garden and landscape
Easy, fast-growing spring-flowering shrub for sun and partial shade.
For wildlife
Important early source of nectar for queen bumblebees and bees.

Caution: Like other currants, an alternate host of white pine blister rust: do not plant it close to Weymouth pines.

You and this species

Did you know?

  • Plant hunter David Douglas brought it from north-west America to England in the 1820s; it was said that this one shrub alone was worth the cost of his whole expedition.
  • In its homeland it is pollinated by hummingbirds, which visit its early flowers in spring.
  • The smell of the leaves reminds some people of blackcurrant, and others of a cat’s litter tray.

All species · Identification key · Pruning calendar

Laden…