Winter jasmine is a deciduous, arching shrub native to China that produces bright yellow flowers on bare green stems in late winter, often weeks before most other woody plants stir. Known in China as Yingchun — the flower that welcomes spring — it is one of the earliest-blooming shrubs available to temperate gardeners and offers reliable color during the coldest, bleakest stretch of the year.
The stems remain green through winter and photosynthesize even when leafless, giving the plant year-round visual presence. Arching canes root wherever they contact soil, making it effective for stabilizing slopes and banks or for cascading over walls and retaining structures; control unwanted spread by lifting unrooted stems in summer. It blooms on the previous season's wood, so prune immediately after flowering to preserve next year's buds. Established plants are drought-tolerant once settled; waterlogged soil in winter is the primary cultural risk. Slightly acidic to neutral soil with sharp drainage suits it best.
Fungal leaf spot
Brown or purplish spots on the leaves, often ringed with a yellow halo, that spread and merge in warm, humid, or wet weather; heavily spotted leaves yellow and drop early.
Pick off spotted leaves and clear fallen debris to remove overwintering spores. Improve air circulation by thinning, and water at the base so foliage dries quickly. If it persists, apply a copper- or sulfur-based fungicide at the first sign.
Root rot
Plants wilt, yellow, and stunt even in moist soil; lower stems and roots turn brown, soft, and mushy and the plant may collapse. Most common in heavy, wet, or poorly drained ground.
Improve drainage and stop overwatering, and never plant too deep. Lift and destroy badly affected plants along with the soil around the roots. Grow in raised or free-draining beds to prevent it returning.
Powdery mildew
White or grey powdery coating on leaves — usually starting on older growth in humid conditions or when nights cool.
Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.