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 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 A vigorous rambler with clouds of strongly scented white flowers with golden stamens in late spring and early summer. Needs a large support, for sun or shade, best in good soil. 6m. Cutting raised.
AGM An excellent clear blue form producing many spikes of flowers from May until midsummer and then sporadically later. Can be cut back after the first flush to promote more. Drained soil in sun. 40cm.
AGM A stunning and well behaved Golden Rod with purple flushed foliage, best in full sun. Open, elegant heads of long narrow branches covered in yellow flowers in late summer. 1.2m. Average to good soil.