Ribes sanguineum
| Red-flowering currant (Ribes sanguineum) | |
|---|---|
| |
| Scientific name | Ribes sanguineum |
| Common names | Red-flowering currant, redflower currant, blood currant, winter currant |
| Genus | Ribes |
| Family | Grossulariaceae |
| Order | Saxifragales |
| Plant type | Deciduous, multi-stemmed shrub |
| Height | 5–12 ft (1.5–3.7 m) |
| Native range | Western Canada to California, with Idaho populations |
| Flowers | White, pink, or red pendulous racemes before the leaves |
| Fruit | Glaucous blue-black berries, under 0.5 in (1.3 cm) |
| Soil | Well-drained, moderately fertile soil; near-neutral to slightly acidic conditions are suitable |
| Light | Full sun to partial shade |
| Bloom and fruit season | Spring flowering; berries ripen in early to mid summer |
Ribes sanguineum, commonly called red-flowering currant, is a deciduous shrub of western North America. Its accepted range extends from British Columbia through Washington, Oregon, and California, with relict Idaho populations. In a garden it is most useful as a spring-flowering shrub followed by a modest crop of blue-black currants.
Description[edit | edit source]
Red-flowering currant is usually a 5–12 ft (1.5–3.7 m) multi-stemmed shrub. Pendulous racemes of white, pink, or red flowers appear before the new leaves, and the fruit is glaucous blue-black. The species occurs in open woods, forest gaps, dry rocky slopes, and disturbed sites, from coastal areas and the Cascade region to elevations around 6,000 ft in the USDA range account. [1]
The plant's native rhythm is broadly wet-winter/dry-summer in the Pacific Northwest and adjacent coastal ranges. That seasonal pattern matters in cultivation: establish plants with regular water, then avoid keeping the root zone continuously wet once they are established. [2]
Cultivation[edit | edit source]
Soil and water[edit | edit source]
Choose a well-drained soil rather than a permanently saturated site. Moderately fertile soil near neutral or slightly acidic is suitable in the USDA guidance, while the University of Washington data sheet specifically warns against saturated soil. On a heavy site, a raised or sloping planting position is safer than a low pocket that stays wet. [3]
Water newly planted shrubs during the first growing season and, where needed, the second. The USDA guidance allows the soil to dry several inches down between supplemental waterings; the University of Washington schedule for container plants calls for weekly watering during the first summer while avoiding saturation. After establishment, reduce irrigation to match the plant's dry-summer pattern. In dry California conditions, occasional early-dry-season water may still be useful while foliage remains active; this is regional genus-level guidance rather than a universal schedule. [4] [6]
Sun and humidity[edit | edit source]
Full sun promotes flowering, although partial shade is tolerated. Shade can reduce bloom. The species is adapted to the relatively dry summers of its native western range and may perform poorly in persistently humid conditions; NC State specifically records humidity intolerance. Provide airflow and avoid treating a humid, poorly ventilated site as equivalent to its native climate. [5]
Seasonal changes[edit | edit source]
Flowering occurs before or as the new foliage emerges in spring. The USDA fact sheet records flowers from March through June and fruit maturity in early to mid summer; exact timing varies with region and elevation. After the summer crop, allow the plant to follow a drier rhythm rather than maintaining saturated soil. Prune immediately after flowering so that the next season's flowering wood is not removed unnecessarily. [6]
Propagation[edit | edit source]
Seed, layering, and stem cuttings are documented propagation methods. Collect ripe blue-black fruit for seed from about mid-July to late August in the University of Washington schedule. Fall sowing can provide the required chilling; when seed is not fall-sown, the USDA guidance gives 30–140 days of cold-moist stratification near 32°F, while the University of Washington sheet gives about 3–3.5 months at 32–36°F. These are source-specific propagation schedules, not a guarantee of uniform germination. [7]
For dormant hardwood material, the University of Washington sheet recommends late autumn to early winter cuttings. The USDA fact sheet also lists softwood, semi-hardwood, and hardwood cuttings and notes that a heel, bottom heat, mist, or rooting hormone may improve rooting in some setups. Clean, dry seed can be stored in airtight conditions around 34–38°F without freezing. [7]
Layering is useful when a flexible low branch is available, and it avoids the need to obtain a large amount of cutting material at once. Keep the new layer evenly moist while roots form, then separate it only after it has established an independent root system. [3]
Flowering, fruiting, and harvest[edit | edit source]
The flowers are borne in pendulous racemes before the leaves, with white, pink, and red forms recorded in extension descriptions. Flowering may extend from March into June across the species' range. Berries are blue-black with a waxy or glaucous coating and are reported as smaller than 0.5 in (1.3 cm), with roughly 20 seeds in the USDA account. They mature in early to mid summer. [4]
Harvest when the berries have developed their dark color and characteristic waxy bloom. Their flavor is commonly described as very tart, and extension guidance presents them primarily for preserves, pie, juice, or syrup rather than as a choice fresh-eating currant. Two identifiable commenters in one Reddit discussion described berries they tasted as unpleasant, dry, or disappointing; because the thread gives no location, provenance, harvest date, or growing conditions, that remains subjective anecdotal context rather than a species-wide quality judgment. [8]
Check current local regulations before planting where Ribes restrictions apply. The white-pine-blister-rust issue and associated prohibitions are jurisdiction-specific; a rule recorded for North Carolina or a historic timber-growing region should not be treated as a universal ban. [5]
Fruit and uses[edit | edit source]
The berries are technically edible but tart. They can be cooked into jam, jelly, pie filling, juice, or syrup, with the balance of flavor depending on the individual plant and preparation. Fresh eating is a matter of taste rather than a reliable reason to grow the species; the preserved-fruit uses are the more consistently documented garden uses. [4]
References[edit | edit source]
Image credits[edit | edit source]
- Ribes sanguineum 5724.JPG: Walter Siegmund (Wsiegmund), Wikimedia Commons file page, Creative Commons attribution/share-alike license (CC BY-SA terms). Attribution: Walter Siegmund (Wsiegmund); retain the file-page and license links, indicate changes, and share adaptations alike.
