Achillea millefolium ‘Angelique’ – Considered by many to be the best red-flowered Yarrow currently on the market and a guaranteed butterfly magnet. This drought tolerant perennial (once established) prefers a full sun sun exposure with good soil drainage. Try combining with the pale yellow Coreopsis verticillata ‘Moonbeam’. Grows 20-24″ high by 24″. Zone 3.
Eryngium ‘Sapphire Blue’ – A highly popular cultivar of Sea Holly with thistle-like steel blue flowers and spiny foliage that keeps the deer at bay. It begins flowering in early summer and makes a great, long-lasting cut flower. ‘Sapphire Blue’ prefers full sun and must have sharp drainage or it rots out in our wet coastal winters. Grows to 28″ high by 18-24″ wide. Hardy to zone 5.
Persicaria microcephala ‘Red Dragon’ – Okay, I’ll admit that this beautiful foliage plant is a bit of a spreader, but you would be hard-pressed to find more beautiful leaves – with a tapered burgundy-red overlaid with a silvery-pink chevron and a dark bronze base. The tiny white flowers are insignificant and it can also be grown in a pot. Grows 24″ high by 30-40″+. Zone 6.
Geum ‘Totally Tangerine’ (syn. ‘Tim’s Tangerine’) – A floriferous new cultivar of Avens with bold tangerine coloured blooms (often with a reddish-orange picotee) on tall airy stems. It is a sterile form and puts all its energy into flowering from late spring through to midsummer. The finely cut green foliage somewhat resembles a strawberry plant. Grows 30″ high by 18″. Zone 4.
Dianthus ‘Starburst’ – What this Border Pink lacks in size it most certainly makes up for with its stunning semi-double blooms of pale pink overlaid with the pattern of a half walnut shell in a deep cherry colour. The fragrant flowers are borne from late spring into summer, over bluish-green grass-like foliage. Makes a great cut flower. Grows 4-8″ high by 8-10″ wide. Hardy to zone 5.