The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.

Clump-forming upright herbaceous perennial to 1.5m in height, with deeply divided, glossy dark green leaves and branching spikes of hooded, deep violet-blue flowers, from midsummer to early autumn ...

Mission Statement: Evidence-based Complementary and Alternative Medicine (eCAM) is an international, peer-reviewed journal that seeks to understand the sources and to encourage rigorous research ...

Taxotrophises A and B, two new polyphenols from the stems of Taxotrophis ilicifolius.