🌲 Redcurrant bush

Grow in fertile, moisture-retentive but well-drained soil (loam ideal). Incorporate plenty of well-rotted organic matter/compost before planting and mulch annually to conserve moisture. Prefers slightly acidic to neutral pH; tolerates heavier clay soils if drainage is good, but avoid waterlogged sites and very dry, impoverished sandy soils.

Redcurrant (Ribes rubrum) is usually planted as a young bush (bare-root or container-grown) rather than raised from seed; seed propagation is slow and variable. Planting (recommended) - When to plant: Set out bare-root plants during dormancy, late autumn to early spring (typically Nov–Mar) when soil is workable. Container-grown plants can be planted most of the year, avoiding frozen, waterlogged, or drought conditions. - Site: Full sun for best yield; light shade tolerated. Choose an open site with good air movement to reduce disease. - Soil: Moist but well-drained, fertile soil. Improve with well-rotted organic matter before planting. Avoid waterlogging. - Spacing: Allow roughly 1.2–1.5 m between bushes (more if training as cordons or in rows). - How to plant: Dig a hole wide enough to spread roots. Plant at the same depth as previously grown (root flare at soil surface). Firm in, water thoroughly, then mulch (keep mulch off the stem). - After planting: Water during dry spells in the first season. In late winter after planting, prune to establish a framework (remove weak/damaged shoots and shorten to encourage new growth, following your chosen training system). Raising from seed (optional) - Seed preparation: Fresh seed typically requires cold stratification to break dormancy. - Stratification: Mix seed with moist (not wet) sterile medium and chill at about 1–5°C for several weeks to a few months. - Sowing: After chilling, sow thinly on the surface of seed compost and lightly cover (very shallow). Keep evenly moist and cool; germination is often in spring but can be irregular. - Pricking out: Pot on seedlings once large enough to handle; grow on for at least 1–2 years before planting out. Seed-raised plants may not match the parent plant’s fruit quality.

Feed in late winter to early spring (before growth starts) with a light application of a balanced fertilizer (e.g., 10-10-10) or a high‑potash, low‑nitrogen fruit fertilizer, and/or top‑dress with well‑rotted compost or manure. Avoid heavy nitrogen feeding, which promotes leafy growth at the expense of fruit and can increase soft, disease‑prone shoots. On established bushes, maintain annual organic mulching to supply nutrients and conserve moisture; reduce or skip fertilizer on very vigorous plants or where soil is already fertile. If soils are acidic, correct pH with lime as needed (do not lime and fertilize at the same time).

Apply an organic mulch annually to conserve moisture and suppress weeds. In late winter or early spring (after the soil has warmed slightly), spread 5–8 cm (2–3 in) of well-rotted garden compost, leaf mould, or well-rotted manure over the root zone, extending to the drip line. Keep mulch a few centimetres away from the stems/crown to reduce risk of rot, and remove perennial weeds before mulching. Top up as it breaks down; maintain an even layer through summer, watering the soil before mulching in dry conditions.

Prune redcurrant bushes in the dormant season (late winter, before budbreak). In the first 2–3 years, build an open, goblet-shaped framework: select 6–8 well-spaced main stems, remove weak/crossing shoots and any suckers from the base, and shorten new leader growth by about one-third to encourage branching. Once established, redcurrants fruit mainly on short spurs on older wood (2+ years), so aim to retain productive older branches while renewing gradually. Each winter: - Remove dead, damaged, diseased, low or congested branches, and any basal suckers. - Shorten most side shoots (laterals) back to 1–2 buds to form fruiting spurs. - Keep the bush open by removing 1–3 of the oldest stems at ground level each year and replacing them with the strongest young shoots (avoid removing too much old wood at once). Tip: avoid heavy pruning in spring once sap is rising; tidy cuts back to a bud or at the branch collar.