Star jasmine in August: monthly care

Star jasmine flowers on the previous season's growth, so pruning is best done in August or September, immediately after the main flush of blooms has finished. Pruning at this time allows the plant to produce new shoots that will carry next year's flowers while avoiding any risk of frost damage to fresh growth. This climber doesn't require heavy pruning to stay healthy, but it does benefit from regular tidying to keep it within bounds and encourage dense, bushy growth. Use clean, sharp secateurs or loppers for stems thicker than your thumb. Start by removing any dead, damaged, or diseased stems, cutting back to healthy wood. Then look for wayward shoots that are growing away from the support or into gutters, windows, or neighbouring plants—trim these back to a main stem or suitable side shoot. If your star jasmine has become overgrown or bare at the base, you can renovate it by cutting back harder, removing up to one-third of the oldest stems close to the base. This encourages fresh growth from lower down. Avoid cutting into very old, thick wood all at once; spread major renovation over two or three years to avoid shocking the plant. Throughout the growing season, you can lightly trim or tie in stray shoots to keep the plant tidy, but avoid any significant pruning between October and July, as you'll be removing the stems that carry the fragrant white flowers. If the plant is young and still filling its space, pruning can be minimal—just remove anything dead or damaged and let it grow.

Star jasmine has moderate water needs. During spring and summer, water regularly if rainfall is scarce, aiming to keep the root zone consistently moist but not waterlogged. Established plants tolerate short dry spells, but prolonged drought will stress the plant and reduce flowering. In autumn and winter, reduce watering; the evergreen foliage means the plant is never fully dormant, but growth slows considerably and natural rainfall is usually sufficient. Feed twice a year: once in April as growth resumes, and again in June to support flowering. Use a balanced general-purpose fertiliser or a slow-release granular feed scattered around the base and watered in. Avoid high-nitrogen feeds, which promote leafy growth at the expense of flowers. Refresh the mulch layer each spring with well-rotted compost or bark to suppress weeds, conserve moisture, and add organic matter. Star jasmine is hardy in zones 7–10, but in colder areas (especially exposed sites in zone 7) it benefits from winter protection. Mulch the root zone thickly in late autumn, and consider wrapping young plants or the base with horticultural fleece during severe frosts. Established plants on warm walls usually come through winter unscathed, though foliage may bronze or look tatty in harsh weather; it typically greens up again in spring. Pests are rarely a serious problem. Aphids occasionally cluster on new growth in late spring—hose them off or treat with insecticidal soap if necessary. Scale insects can appear on stems and leaves; scrape them off or use a suitable horticultural oil. Star jasmine is generally disease-free, though poor drainage or overwatering can lead to root rot. Good soil preparation and sensible watering prevent most issues.