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 Very similar to the well known A. sphaerocephalon but this has light yellow flowers. Well behaved and very pretty mixed with grasses. Drained soil in sun. 60cm.
AGM An excellent and very floriferous form which produces masses of rich blue flowers with a hint of purple in late summer and autumn. Drained soil in sun, 45cm.
The beautiful white flowered form of this hardy Begonia. Light green leaves with red veined and flushed backs. Flowers in late summer and autumn to 60cm.
TENDER AGM Desireable species with exotic palmate leaves on red stems. Much used at Dixter. Can be put outside in a shady place in summer and take in frost free overwinter. 1.5m.
One of the best in the recent RHS trials with a compact habit, good purple-red winter foliage and lots of clear pink flowers in spring. Good for a sunny drained position. 40cm.
AGM Grey leaves with nearly white undersides and long tapering spikes of white flowers from midsummer into autumn. Deciduous, best in a sheltered position in full sun in drained soil. 2m.
AGM The best form of this species in our opinion! Light grey-blue-pink flowers on tall strong stems in summer to 1.8m. Best in good soil in sun or light shade.
AGM An excellent small flowered pom-pom type of hardy Chrysanth in a glowing acid yellow. A lovely contrast to the warmer colours in autumn. Drained soil in sun, 90cm.
Glowing greenish yellow winter stems are the main reason for growing this dogwood. Small clusters of white summer flowers followed by white berries. 2.4m if you don't cut back to a stump every year..
A recent introduction from Kurt Bluemel. Dwarf growth to only 1.4m. Steely grey foliage and warm buff flowers from July (rather than October as with other cultivars). Full sun, evergreen.
AGM Probably the largest flowered Crocosmia, easily to 8cm across when happy. Open, narrow petalled flowers in a clear orange with a yellow throat. 80cm. Sun.
AGM Near white flowers soon flush pink then near purple on dark burgundy stems over clumps of striking leaves the same colour. Full sun, drained soil. 60cm.
AGM Large scarlet and rich magenta flowers in good numbers on this vigorous bushy hardy Fuchsia. Average soil in part or light shade for best growth, can scorch in hot sun. 90cm.
TENDER AGM Rarely seen now this vigorous species from Mexico has large pale green leaves and big bunches of incredibly long tubed orange-red flowers with distinct creamy-green sepals. Potentially 2m!
AGM A elegant species with slender bright reddish pink flowers with purple corollas and red filaments. Smallish but broad leaves try to be evergreen. Borderline hardy - drained soil in a sheltered position, light shade. 60cm?
AGM Unusual lanceolate leaves on a willowy upright plant producing masses of elegant red and purple flowers from midsummer. Distinctive reddish stems. Should be hardy in drained soil, best in some shade.
AGM Striking milky white flowers in short branching spikes above fresh green foliage on this clump former. Sterile so no self-seeding. Ordinary soil in sun or part shade.
A really good bulbous plant for a sunny, well drained site. Funnels of broad greyish leaves and strong upright stems with spikes of large white bells in summer to 90cm.
AGM A mound of large pale blue flowers veined crimson. 45cm. Flowering June-August onwards. Reasonable soil in open or sunny position. Unique colour for a long flowering plant.
AGM This brilliant hybrid from Cambridge Botanic Garden has intense blue flowers with white centres from May to July and September onwards. Open position in average soil. 60cm x 90cm. Named after a street in Cambridge.
Like 'Brookside' but with darker blue flowers, 5cm across. The stuff of myth! Average soil in sun, 70cm. Summer with good repeat and super foliage colour in autumn.
