Kalmia angustifolia
A small evergreen shrub with curious pale pink flowers, very attractive.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kalmia angustifolia 'Rubra'
A small evergreen shrub from North America. This form has vivid rose pink flowers in midsummer.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kalmia latifolia
Magnificent medium - sized shrub, for acid soil. Clusters of bright pink, saucer - shaped flowers in June, giving the impression of cake decorations.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kalmia latifolia 'Ostbo Red'
Bright red buds opening to deep pink flowers on this lovely evergreen American. Makes a handsome, medium sized shrub for acidic soils.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kerria japonica
Upright shrub with bright green stems and foliage and single yellow flowers all along the stems in April and May.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kerria japonica 'Picta Variegata'
A pretty small shrub with cream and pale green variegated leaves. Single yellow flowers April and May. Deciduous.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kerria japonica 'Pleniflora'
An upright shrub with bright green stems. Double yellow flowers in profusion during April and May and sometimes later.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Knautia macedonica
Lovely little perennial with ruby red scabious like flowers all summer and well into the autumn.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kniphofia 'Bee's Lemon'
Typical poker flowers opening lemon from green buds and flowering in late summer and early autumn.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kniphofia 'Little Maid'
Delightful small poker with pale yellow flowers opening from green buds above grass like foliage. Flowering late summer and early autumn.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kniphofia 'Royal Castle'
Stately red hot poker with red and yellow flowers up to a metre in height in summer and autumn.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kniphofia 'Royal Standard'
Robust red and yellow pokers flowering in summer.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kniphofia uvaria
One of the tallest pokers with typical orange and yellow flowers in late summer.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Koeleria glauca
Attractive clump forming grass with glaucous blue leaves and silvery inflorescences in midsummer that age to straw colour as the autumn approaches.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil

Kolkwitzia amabilis 'Pink Cloud'
A lovely and graceful shrub of medium height. During May and June it is draped with masses of rose pink small foxglove like flowers.

• Evergreen
• Acid soil
• Well drained soil
• Full sun
• Half sun
• Shade
• Award garden merit
• Moist soil
• Dry soil
• Wet soil