Aquilegia chrysantha 'Yellow Queen' (Granny's bonnet. Columbine 'Yellow Queen'): Bright yellow, fragrant flowers with long spurs on tall stems above ferny foliage. Prefers some shade. Hardy. Up to 90cm.

Aquilegia McKana group (Granny's bonnet. Columbine): Large trumpet flowers with long spurs in lemon yellow and other pastel colours in late spring. Attractive to bees. Hardy. Up to 80cm.

Epimedium 'Spine Tingler' (Barrenwort 'Spine Tingler'): Very distinctive variety with long, tooth-edged leaves, rather like a holly and lemon yellow flowers. Hardy. To 30cm.

Epimedium pinnatum subsp colchicum (Barrenwort): Attractive, evergreen, spiny, green leaves with yellow flowers held above the foliage. Shady ground cover. Hardy. Up to 30cm.

Epimedium x perralchicum 'Frohnleiten' (Barrenwort 'Frohnleiten'): Heart-shaped leaves are bronze-tinted, wiry stems of yellow, star-like flowers in spring. Shady ground cover. Hardy. Up to 30cm.

Primula elatior (Oxslip): Pale yellow, primrose colour flowers in clusters on gently arching stems.

Primula sikkimensis (Himalayan cowslip): Tall stems with clusters of pendulous pale yellow funnel-shaped scented flowers, rising from a rosette of green leaves. Up to 40cm.

Primula vulgaris (Primrose): The much loved wild primrose which self-seeds merrily here at the nursery. To 20cm. Hardy.