 | Plant list: Yellow plants
 Yellow is a warm prime colour and associates well with the other prime colours, blue and red.
 | |  | | Latin name: | | Laburnum x watereri ‘Vossii’ |  |  | | Common name: | | Voss’s laburnum |  |  | | Type of plant: | | Tree |  |  | | Hardiness: | | Hardy |  |  | | Flower colour: | | Yellow |  |  | | Leaf colour: | | Glossy deep green |  |  | | Height and spread: | | 10m x 10m (33ft x 33ft) |  |  | | Description: | |  Deciduous spreading tree grown for the hanging clusters of flowers. But beware of the seeds produced - although they look like hairy pea pods, they are poisonous. Does best in full sun and any but waterlogged soil.
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 | |  | | Latin name: | | Forsythia x intermedia |  |  | | Common name: | | Forsythia |  |  | | Type of plant: | | Shrub |  |  | | Hardiness: | | Hardy |  |  | | Flower colour: | | Deep yellow |  |  | | Leaf colour: | | Mid-green |  |  | | Height and spread: | | 1.5m to 3m x 1.5m to 2.5m (5ft to 10ft x 5ft to 8ft) |  |  | | Description: | |  A deciduous bushy shrub that produces a huge number of flowers for its size, which open before the leaves emerge. Prefers full sun. To keep it vigorous, thin out old wood after flowering.
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 | |  | | Latin name: | | Jasminum nudiflorum |  |  | | Common name: | | Winter jasmine |  |  | | Type of plant: | | Shrub |  |  | | Hardiness: | | Hardy |  |  | | Flower colour: | | Bright yellow |  |  | | Leaf colour: | | Dark green |  |  | | Height and spread: | | 3m x 3m (10ft x 10ft) |  |  | | Description: | |  Deciduous arching shrub, with flowers which are born along the green stems before the oval leaves emerge. Prefers a spot in full sun, and can be attractively trained against a wall.
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 | |  | | Latin name: | | Iris pseudacorus |  |  | | Common name: | | Yellow flag |  |  | | Type of plant: | | Rhizome |  |  | | Hardiness: | | Hardy |  |  | | Flower colour: | | Yellow-gold |  |  | | Leaf colour: | | Greyish green |  |  | | Height and spread: | | 2m x 30cm to 45cm (7ft x 1ft to 1.5ft) |  |  | | Description: | |  Vigorous beardless iris with broad, ridged, sword-like leaves. A branched stem carries four to twelve flowers 5cm to 12cm (2in to 5in) wide often with brown or violet veining.
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 | |  | | Latin name: | | Primula veris |  |  | | Common name: | | Cowslip |  |  | | Type of plant: | | Perennial |  |  | | Hardiness: | | Hardy |  |  | | Flower colour: | | Yellow |  |  | | Leaf colour: | | Mid-green |  |  | | Height and spread: | | 20cm to 25cm x 15cm to 20cm (8in to 10in x 6in to 8in) |  |  | | Description: | |  A clump-forming perennial with oval to lance-shaped, mid-toothed leaves which produces tight clusters of flowers on a stout stem. Happy in full sun or part shade, and likes moist soil.
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