March

From the Tian Shan Mountains of northern China comes this tough little subshrub that is among the finest expressions of silver foliage to be found. Helichrysum thianshanicum is a superb silver leaved evergreen, subshrub that forms a tight mound of eye-catching silver foliage.

Heliopsis is a great plant for the busy home gardener. ‘New Hybrids' is a selection of the newest forms, they will bloom the first year from seed with a profusion of blooms in shades in lemon, golden yellow and orange-yellow. The plants will produce arm loads of flowers all summer long and never once ask for decent soil or proper care.

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.

Hosta are grown predominantly for their outstanding foliage, from leaves as small as a teaspoon up to those larger than a dinner plate, colours range from deep blues to silvers, darkest shiny greens to bright yellows, from a single solid hue to the myriad of variegations the choice is almost overwhelming.

Humulus lupulus, is a climbing hardy herbaceous perennial. The Hops are actually the female flower cones or 'strobiles' of the plant. Hops are used as a sedative and relaxant, sleeping on a pillow filled with hops is said to help insomnia. Leaves and shoots are eaten either cooked or in salads, the flavour is said to be delicious.

A deep blue carpet of bluebells is an unforgettable sight to anyone visiting many of our native woodlands. The spring spectacle of seeing a wood not only greening, but also 'blueing' is one of the joys of the year. When bluebells are in flower, spring has truly arrived.

Hyssopus officinalis 'Alba' is a much less well known variety of hyssop. Also known as 'White Hyssop' the plants sport bright white flowers from July to October. Widely used as a 'taste enhancing' herb or wildlife plant, the plants are a dark, vibrant green with a spiky, upright habit and narrow tongue-like leaves which have a peppery scent when stroked.

Hyssop, once recognised as a medicinal herb is enjoying a revival with home gardeners. An aromatic herb similar to rosemary or lavender, it makes an excellent low hedge and more unusual alternative to box. The plants are a dark, vibrant green with a spiky, upright habit and narrow tongue-like leaves. 'Pink' Hyssop sports vibrant, pink flowers.

Hyssop is a strong-flavoured aromatic herb which is enjoying a revival with home gardeners. An ideal plant for use in containers or as a low hedge or border within the herb garden. Highly attractive to bees, it makes excellent honey and is a must for any wildflower garden.

Throughout the summer, large, pure white flowers of Ipomoea alba open quickly at night, releasing sweet perfume into the evening air. Position near to your patio where you can enjoy the fragrant scent in the evening. A wonderful plant for a moth, night, or fragrance garden, the large white blooms appear to illuminate the garden

Ipomoea nil ‘Blue Picotee’ produces large, ruffled cobalt-blue blooms that are edged with bright white surrounding a deep rose throat. This extremely carefree and free-blooming, annual climbing vine will grow to around 120 to 180cm (4 to 6ft) tall. It will bloom early and load itself with masses of attractive funnel shaped flowers up to 10cm (3in) wide all summer long.

Ipomoea pennata is undoubtedly one of the most beautiful of all annual vines. The feathery foliage with thin, thread-like leaves give the plant a light, airy texture. In summer the plants burst into flower and are covered with hundreds of scarlet red, star shaped flowers.

This heirloom morning glory originated in Bavaria in Germany and named for the original Seed-saver Baptist John Ott, Ipomoea purpurea 'Grandpa Ott' flowers of intense violet-blue, with a ruby red star. It is a good climber for walls, trellis work or if allowed to scramble through other plants or trees.

Ipomoea 'Kniolas Black' is one of the darkest of all Ipomoea varieties available. It blooms with the most stunning dark velvety purple-black flowers, each with cerise throats. Very easy to grow, this extremely carefree and free-blooming climber will bloom early and load itself with masses of attractive dark purple-black flowers all summer long.

Iris bulleyana is a classic species Iris from western China. It belongs to a small group of oriental species which are entirely hardy and are of great value to the gardener. The plants are successful in any moist garden soil. Flowering from June to July, the blooms with mid purple flowers and dark purple veins.

Yellow Flag Iris is a common and widespread native plant in Britain. This good-looking plant is a wetland plant that is especially showy in bloom and has been transplanted into well-watered gardens all over the world.

Iris versicolor is one of the few species in garden cultivation. Although happiest at the waterside the plants will also perform well under average to moist border conditions. Flowering from May through to July, each stalk produces up to five violet-blue flowers with ruffled petals and bold purple veining.

'Kermesina' is an attractive and popular cultivar of Iris versicolor. Flowering from May through to July with claret-purple flowers with ruffled petals and bold purple veining. It may be grown in shallow standing water or moist shoreline soils and suitable to be grown in constantly moist humusy soils of a border.