The Award of Garden Merit (AGM) issued by the Royal Hoticultural Society (RHS) helps gardeners find reliable, consistent plants that will provide particularly good value in the garden.The award is granted after trials at the RHS’ garden at Wisley in Surrey and/or assessment at specialist collections or discussion at meetings. There is a set list of criteria that plants have to meet to be deemed worthy of the AGM. For more information on the AGM please visit the RHS Website.
Nursery owner, Tim Fuller, has been involved with judging the trials at RHS Wisley since 2008.
AGM Glorious shining white flowers over clumps of grey foliage from midwinter throughout spring. Well drained soil in full sun. Even better in a porch or cold greenhouse. 15cm.
AGM Neat clumps bearing masses of glowing yellow-orange flower spikes in summer to 80cm. Dark stems add to the effect. Drained but good soil in full sun for best flowers.
AGM Splendid flaming spikes of bright coral-orange buds that don't fade as they open until they are going over giving a small cream section at the base of the head. Sun, drained soil. 1m.
AGM Warm bronzed orange buds open to clear yellow flowers on distinctive dark stems. A stand out plant in the Wisley Trial. Neat clumps flowering July-September, 75cm. Drained soil in sun.
An elegant variegated form with an upright clump forming habit and fine foliage with white margins. Excellent and airy height for mixing into formal borders or naturalistic gardens. Good soil in sun. 1.5m.
AGM Not as dwarf as the name suggests! A classic form of catmint well suited to the traditional edging of large herbaceous borders or formal paths where a billowing cloud of lavender blue flowers all summer is required. Drained soil in sun. 60cm.
The classic black grass. Ideal for tubs and containers as well as edging borders etc. Strappy black foliage and short spikes of mauve flowers followed by black, pearl-like, berries. Decent soil in shade or part shade.
AGM Pure white daisies over greyish foliage making a low, rather sprawling plant for the front of the border. Hardy in a warm sunny spot with good drainage. 30cm high, 60cm spread.
Low clumps of greyish foliage and masses of over-the-top creamy caterpillar-like flowers from midsummer till the frosts. Well drained soil in sun. 45cm.
A mat forming perennial of almost leafless stems producing masses of palest pink, near white, starry flowers from spring til autumn. Drained soil in sun or part shade. 30cm.
AGM An excellent older Russian selection with good, healthy, deep green foliage with a purple flush. Good heads of strongly scented purple flowers with a white star in late summer. Mildew resistant. Good soil in full sun, 1m.
AGM Clump forming Campanula relative with lax stems of greyish-green leaves and balloon-like buds opening to wide bells of blue flowers. Decent soil in sun or light shade. 40cm.
AGM Clump forming Campanula relative with lax stems of greyish-green leaves and balloon-like buds opening to wide bells of pale pink flowers. Decent soil in sun or light shade. 40cm.
AGM One of the best blue flowered forms with the rich, royal blue flowers shown off to good effect by the clumps of deep green leaves. Usually deciduous. 20cm. Good soil in part shade or shade.
AGM A less common but more refined relative of 'Goldsturm'. Taller and more elegant slightly lighter yellow flowers in summer and autumn to 75cm. Easy in ordinary soil in sun.
AGM Brilliant glowing magenta pink flowers on a bushy plant to 60cm. Leafier than some types. For a well drained soil in full sun and a sheltered position.
