Northwest Himalayas. Broadly columnar, deciduous. Creates heavy shade. Creamy white flowers much later than A. hippocastanum. Conkers are almost black and produced in smooth skinned fruits. Drought and heat tolerant.

Narrow crown, shading is minimal with good grass growth. Deep roots fix nitrogen and hold the soil. Grows well on dry Gisborne and Nelson hillsides, deciduous for 6 weeks. Cold hardiness not tested further south.

A native perrenial, the Rega Renga is a favoured native landscape plant for covering ground under trees. Tolerating full sun to full shade it works superbly to add foliage and flowers in areas most shrubs won't thrive. White star-shaped flowers arrive in early summer that stand out over lush green leaves. Can be frosted back in cold areas. We need to dispatch in Autumn. Will grow to 1m by 1m.

Europe and N. Asia. Narrowly weeping, deciduous. Bark white, developing dark, rugged cracks at the base with age. Tough, vigorous pioneer species. Yellow autumn colour can be spoilt by birch rust in some seasons. Yields hard white timber.