Deciduous
-
£11.99A beautiful recent selection making compact mounds of aromatic grey green foliage and many spikes of sparkly blue flowers produced during summer. Sunny open spot. Soil not too wet. Height 50cm – 70cm
-
£11.99A most lovely catmint forming mounds of grey green foliage and many spikes of lavender blue flowers during summer. Sunny open spot. Soil not too wet. Height 50cm – 70cm.
-
£11.99One of the best catmints, forming compact mounds of crinkly grey green scented foliage and many delightful blue mauve spikes of flower during summer. Sunny open spot. Soil not too wet. Height 60cm-80cm.
-
£11.99Aptly named selection having a generally upright habit, relatively large green leaves and large spikes of purplish blue flowers during summer. Sunny open spot. Soil not too wet. Height 60cm – 80cm
-
£12.55A really tall prairie switch grass selected for its comparatively glaucous blue leaves and later forming flowers . Possibly one of the tallest with a generally upright habit. Sunny open spot. Soil not too wet. Height; 2.1m – 2.4m.
-
£12.55A tall switch grass selection with foliage of an attractive glaucous grey blue colour. Has a generally upright habit, masses of later appearing tiny flowers and attractive golden autumnal colours. Sunny open spot. Soil not too wet. Height; 2.1m – 2.4m.
-
£12.55A most lovely selection of switch grass chosen for its distinctive greyish blue stems, wide leaves, and showy purplish pink tinted flower panicles in high summer. Sunny open spot. Soil not too wet. Height; 1.5m – 1.8m.
-
£12.55
An excellent selection forming clumps of very upright grey green foliage topped with massed cloud like panicles of tiny purplish flowers during summer. Sunny open spot. Soil not too wet. Height; 1.2m – 1.5m. Deciduous
-
£8.55
An excellent selection forming clumps of very upright grey green foliage topped with massed cloud like panicles of tiny purplish flowers during summer. Sunny open spot. Soil not too wet. Height; 1.2m – 1.5m. Deciduous
-
£12.99
A new Knoll Gardens selection for autumn 2023. Produces masses of airy pink red flowers supported by generally upright stems and green foliage that develops many shades of wine red and purple as the season progresses. Best in sunny open positions with soil that is not too winter wet. Height 1.2m – 1.5m.
Panicum Merlot, like many a fine wine of the same name, has been some years in the making. For more than a decade Knoll has been trialling seedling selections of the prairie switch grass, Panicum virgatum, with the aim of producing a selection that will not only perform well in the variable UK climate, but which would also offer reliable red toned foliage as well as flower. Following the last few years of final evaluation we are delighted to offer Panicum Merlot to UK gardeners.
-
£12.99
An invaluable upright selection having a very distinctive narrow vertical habit and wide greyish green foliage that turns yellowy orange in autumn. Later flowering. Superb vertical accent. Sunny open spot. Soil not too wet. Height; 1.5m – 1.8m.
-
£8.55
An invaluable upright selection having a very distinctive narrow vertical habit and wide greyish green foliage that turns yellowy orange in autumn. Later flowering. Superb vertical accent. Sunny open spot. Soil not too wet. Height; 1.5m – 1.8m.
