Abutilon vitifolium is a stunning zone 7 hardy flowering maple with large, open, 3 inch wide, lavender flowers.

Acer 'Morning Starburst' is an elegant addition to the garden that offers spectacular burgundy and red tones in the fall.

The paperbark maple, Acer griseum, is a distinctive species with beautiful exfoliating bark and fall colour.

Acer palmatum 'Fireglow' is a heat-tolerant Japanese maple with pinkish-red leaves in spring becoming purple-red in fall.

Acer palmatum 'Purple Ghost' has deep purple-red leaves with prominent black veins turning fiery-red to orange in fall.

Acer palmatum ‘Sango Kaku’ is the famous coral bark Japanese maple with fall, winter, and spring bark in shades of coral red and salmon.

Acer palmatum 'Tsukasa Silhouette' is a vigorous upright deciduous tree with a very narrow form with small green leaves and brilliant fall colour.

Acer palmatum 'Twombly's Red Sentinel' is a columnar Japanese maple with red spring foliage to brilliant red with orange hues in the Fall.

Acer palmatum 'Ukigomo' or floating cloud Japanese maple is the most spectacular of variegated cultivars.

Acer palmatum 'Ukigomo' or floating cloud Japanese maple is the most spectacular of variegated cultivars.

Acer shirasawanum 'Moonrise' has yellow-green to golden foliage with stunning red new growth.

Acer 'Joe Witt' is an excellent snakebark maple with bold white, silver and green striations with red highlights that become more pronounced with time.

Achillea ageratifolia is an unusual yarrow forming aromatic, silver-green, mounds covered in pure white daisies with light yellow centres.

Achillea 'Coronation Gold' is an award-winning yarrow with masses of flat-topped, golden yellow flowers.

The tall stems and purple-blue flowers of the monkshood Aconitum 'Arendsii' offer a substitute for Delphinium for shadier conditions.

Aconitum 'Spark's Variety' has four foot tall spikes of hooded, deep violet-blue monkshood flowers.