Evergreen

Ajuga genevensis is used throughout the world yet this relatively uncommon form is less well known. This very well behaved, evergreen groundcover has deep gentian blue flower spikes and is by far the showiest of the species. It is often the plant of choice for smaller areas or along edges and pathways.

For most of the year Ajuga is a pleasant, quiet achiever, a very versatile low growing ground cover, with evergreen, rosette-like foliage that hugs the ground like an evergreen carpet but those weeks in spring when the blue flowers appear are simply quite magical.

Commonly known as the Cat's Tail Aloe, Aloe castanea is one of the larger ‘shrub’ aloes available to the home gardener. The rosette gives rise to multiple, fuzzy, orange racemes which are held upright and curve like a cat’s tail.

The Cape Aloe is a distinctly handsome plant, with broad, lance-shaped, fleshy leaves and a large candelabra-like flower-head. There are usually between five and eight branches, each carrying a spike-like head of many flowers.

One of the most attractive and floriferous of Aloes of South Africa, Aloe microstigma, forms solitary or small clumps of beautiful rosettes of blue green leaves. The leaves are adorned with conspicuous white spots, which contrast nicely with the reddish teeth along the margins.

Aloe striata, commonly known as the Coral Aloe is one of the prettiest of all succulents. The smooth, blue-green leaves are edged with a pink or red margin and it blooms with coral coloured flowers. Grown with Agave, cacti or other succulents, they make stunning indoor displays.

Aubrieta 'Hendersonii' is a vigorous variety that is smothered by rich lilac-purple flowers for several months in spring. It grows to only 10 to 15cm tall at maturity, but with a spread of around 45cm it makes a lively edging to a sunny border, growing over rock walls or placed in stonewalls.

Commonly called ‘Rock Cress’, Aubrieta is a traditional rock garden plant that is lovely spilling out of crevices, growing over rock walls or placed in stonewalls. 'Leichtlinii' forms a low cushion of leaves that is, throughout the summer months, smothered by wonderful deep-carmine flowers.

Aubrieta has long been treasured for its delightful spring show of brightly coloured flowers. ‘Whitewell Gem’ is smothered by large, intense reddish-purple flowers for several months. Lovely spilling out of crevices or over rock walls, the plants can also be used in paving with other ground hugging plants.

'Snow in Summer' lives up to its name in late spring when the foliage is smothered in luminous white flowers. Beautiful used as a path edging, in a stone wall or cascading over containers. Try it amongst your spring bulbs - tall lily flowering tulips above a dense carpet of white Cerastium… Breathtaking!

Cyperus alternifolius is a very popular both as a house plant and pond plant. The bracts are symmetrically arranged in an umbrella formation and held atop elegant stems that sway with the breeze, giving a tropical touch to the garden. They are also excellent when used in fresh or dried floral arrangements.

Eryngium maritimum is an evergreen perennial plant native to Europe. Often found on sea shores, it is a protected species in many parts of the world. Highly ornamental, it is grown in gardens for its metallic bluish flowers and intensely whitish-glaucous leaves, it is very attractive to bees and butterflies.

Eryngium variifolium ‘Miss Marble’ is a spectacular evergreen perennial. The neat mound of basal leaves are attractively marbled with silver veining. In summer upright stems bear silvery-blue flowers, each thimble is surrounded by long, slender bracts which splay outwards, adding to the prickly appearance.

Long sword-shaped leaves that launch an architectural wonder of tight set thistle-style, white spheres, the flowers of Eryngium yuccifolium are borne on tall branching stems. The unique structure and colour make it highly desirable to gardeners as accent plants in borders and wildflower meadows.

One of the grandest of plants, Euphorbia characias 'Wulfenii' has upright stems clothed with whorls of fleshy, mat grey-green leaves that lend the whole plant a textural quality that is unparalleled. From March to June the plants are topped with intense chartreuse-green flowers'.

Herniaria glabra is a relatively unknown perennial that deserves to be used more often in our gardens. The nursery industry calls it ‘Green Carpet’ and well they should. This lovely bright green creeper spreads effortlessly in all directions. An excellent choice for between flagstones or as a lawn substitute.

The Kniphofia hybrids have extended both the flower colour and height range. The usual fiery reds and oranges work particularly well in a planting scheme based on 'hot' colours - use them to light up sultry August borders. The cooler yellow, cream, ivory and sometimes green flowers is more restful.