🌲 Winter jasmine

It thrives in moderately fertile, humus-rich, well-drained soil. Winter jasmine (Jasminum nudiflorum) adapts to most soil types (sand, silt or clay, including limestone) provided drainage is good, and is generally suited to neutral to alkaline conditions. Avoid winter waterlogging; on heavy clay soils, improve structure by incorporating organic matter and adding gravel (or plant on a slight mound/raised bed) to increase aeration and drainage.

Winter jasmine (Jasminum nudiflorum) generally propagates vegetatively; seeds are rare and slow. Semi-ripe cuttings (recommended): - Time: mid to late summer (July-August). - Material: 7-10 cm cuttings from the current season's growth; cut just below a node. - Preparation: remove the lower leaves; if necessary, lightly wound the base and use a rooting hormone. - Medium: draining mixture (e.g. fine sand/perlite with a little peat-free compost). - Environment: place in daylight and shade from the sun; keep humidity high (propagator or bag/ventilated cover) and even. - Aftercare: repot once roots have taken root; overwinter in a cool, frost-free place; plant out the following spring. Hardwood cuttings : - Timing: late autumn to winter (November-February), after leaf fall. - Material: 15-20 cm of mature shoots; cut below a node at the base and above a bud at the top. - Insertion: plant vertically with 2/3 of the cutting below the surface. - Medium/site: pots or outdoor nursery in a sheltered position with well-drained soil; keep just moist. - Rooting: generally during the following growing season; transplant when rooting is well established. Layering (very reliable): - Period: spring or early autumn. - Method: bend a flexible shoot towards the ground, secure it with a small buried section (a shallow cut at a node may be useful), leaving the end exposed. - Separation: roots usually form within a season or a year; detach and replant once established. Seeds (if available): - Period: spring (March-April). - Method: sow finely on the surface of fine, well-drained compost; cover lightly with compost/gravel. - Conditions: 15-20°C, bright light, even humidity (not waterlogged). - Notes: germination can be irregular and sowing is slow; vegetative methods are preferable. Planting: - Best time: autumn or spring, when soil is workable. - Location: full sun to partial shade; shelter improves flowering; well-drained soil. - Support: tie to wire or trellis against a wall or fence if grown as a climber. - Watering: water well; maintain watering during the first growing season, then only during periods of prolonged drought.

Apply a 2-5 cm mulch of well-decomposed compost or dead leaves in spring, after flowering, to boost soil fertility. On poor soils or when growth is weak, apply a balanced, slow-release general fertilizer (e.g. a homogeneous NPK) once in spring. Avoid fertilizers with a high nitrogen content, which can encourage soft, leafy growth to the detriment of flowers. Container-grown plants can be lightly fertilized with a balanced fertilizer in spring only; do not fertilize in late summer or autumn.

Mulch winter jasmine with a 5-8 cm layer of organic matter (garden compost, composted bark, leaf compost or well-decomposed manure) spread over the root zone in late autumn or early winter, once the soil has cooled. This helps to cushion frost, stabilize soil moisture and eliminate weeds. Keep the mulch a few centimetres from the stems/crowns to prevent rotting, and top it up or renew it each year as it decomposes (you can also refresh it in spring to conserve moisture).

Prune immediately after flowering (late winter to early spring). Remove dead, damaged or weak wood, then thin out congested stems to improve air circulation. Shorten flowering shoots (those that have just flowered) back to sturdy young shoots or 2 or 3 buds from the old framework to encourage vigorous new growth for next year's flowers; on trellised plants, tie off and keep new shoots well placed and cut back unwanted side shoots. Avoid pruning in autumn, as this removes flower buds. Renovate overgrown plants by removing some of the oldest stems at ground level each year, thus completing the renewal process over 1 to 3 seasons.