Hardy Perennials

Gardeners are often looking for good solid perennials that will have attractive flowers, be easy to take care of, grow nicely but not take over the garden. One group of plants that should be considered is the Veronicas. They provide some of the clearest, truest blues in the perennial border.

Veronica longifolia prefers a position in sun or part shade in moist well-drained soil. The sophisticated blue spires bloom in midsummer and last for several months. They make a strong vertical statement and are an excellent contrast to more traditional flowers shapes when positioned at the front of the border.

Relatively new to cultivation Verbascum phoeniceum 'Violetta' is the smallest growing of the perennial Verbascums. Soundly perennial and drought tolerant it produces delicate flower spikes with whorls of tissue thin purple blooms that ascend to the finest point. It is by far the darkest flowered mullein available.

English gardeners are very familiar with this plant and consider it essential for a well-structured garden. Verbascum phoeniceum 'Hybrids Mix' flower freely, giving a glorious plethora of colours from delicate salmon to rich claret. A true perennial which can flower the first year given an early sowing.

The poise of the lovely Verbascum phoeniceum 'Flush of White' makes this plant a natural candidate for the front of the border, even though its height might suggest, that it should go at the back. In summer winds, which snap off delphiniums and toss sunflowers awry, the Verbascum stands defiant.

Verbascum ‘Snow Maiden’ is an incredibly beautiful mullein that grow to just 36 to 48cm tall. With masses of soft white flowers each with delicate yellow filaments they flower in June and continue to appear over a long summer, often right through to September. Very easy to grow from seed.

Verbascums are statuesque in both foliage and flower. This elegant species, native to the Olympus mountains is arguably the finest of the genus. Tall flower spikes rise from the centre of the foliage, each are weighted heavily with bright, golden-yellow blooms giving the effect of an enormous candelabra.

One look at this species of Verbascum and you will realise why it is also called ‘Arctic Summer’. Tall, white, fleecy flower stems emerge from felted evergreen leaves in early summer. Its stems and leaves are covered in a silvery down that gives it an appearance of being permanently covered with frost.

Valeriana officinalis is a graceful wildflower that is native to Europe and Western Asia. The tall, branched flower stalks are held atop a low mound of foliage, the densely clustered flowers are sweetly scented and usually white with a hint of pink.

Trollius europaeus is a beautiful native wild flower of Europe and Western Asia. Found in damp ground in shady areas, it is a most attractive plant with dark green, deeply cut leaves and bears flowers, best described as egg-yolk yellow in colour.

Thymus serpyllum is one of the most versatile groundcovers. Forming dense evergreen cushions of flowers these low maintenance plants don’t require mowing, watering or care, and can take a lot of abuse. Its leaves can be used as a culinary herb and its uses in the garden are almost unlimited.

Thalictrum lucidum is a less well known species of meadow rue, it sports luscious deep green, fern-like foliage. In mid-summer the plant is festooned with a superb array of fragrant flower stems, topped with airy puffs of soft cream flowers each with bright yellow stamens.

Thalictrum aquilegifolium 'Purpureum' features a basal clump of lacy, blueish-green foliage topped by a hazy, fuzzy show of purple flowers. They produce a shimmering hazy effect in beds and borders wildflower gardens or meadows. Both leaves and flowers are good for flower arrangements.

Summer-blooming spiky flowering plants - in garden design parlance ‘the verticals’. We all need some, and there are lots of contenders, but a plant that can go just about anywhere in the garden, cope with almost all situations and bloom with copious plush spikes over several weeks is a very rare treat.

Related to Heuchera and Tiarella, Tellima grandiflora form a tidy clump of rounded leaves and are topped by lime-green airy spires. They make excellent groundcover, thrive in shade between flowers in a border and make a good filler for separating strong shapes or bright colours.

Stokesia laevis is an easy to grow hardy perennial that produces generous quantities of long lasting flowers. Shaggy cornflower-like electric blue or purplish-blue flowerheads are borne generously in late summer. It is considered by many as one of the most attractive late-flowering perennials.

This pretty little wildflower is a slow growing, long-lived plant with attractive spikes of rich pink-mauve flowers that are very attractive to bees and butterflies as a nectar source. The flowers, which rise from dark green crinkly leaves, keep their colour throughout summer and look stunning when growing en-masse.