May

Canna 'Large Flowered Hybrids' create an undeniably tropical look, producing large flowers in hot colours in yellow, gold, fiery orange and red. With their lush tropical foliage and showy flowers they make borders and beds come alive with their bright colours all summer long until first frosts.

Amazon Mist is a graceful ornamental grass with arching silver white evergreen foliage, each ending with a slight curl. The flowing mounds of fine textured are lovely spilling over slopes and walls. It adds colour and texture to both summer and autumn displays.

Carex Prairie Fire is an outstanding specimen plant. A very ornamental grass, in full sun the fine leaved foliage erupts into colour like burning embers. In late summer, panicles of rosy flowers appear just above the foliage. For glorious colour, plant in full sun to partial shade.

Bred specifically for professional cut flower production. Carthamus tinctorius ‘Kinko’ is a special selection featuring deep orange blooms. Easy to grow from seed, flowering can be staggered by sowing successionally. It will give a host of vibrant hues throughout summer, whether in the garden or in the vase.

Carthamus tinctorius ‘Shiro’ features unusual creamy-white blooms. It makes an excellent, high quality cut flower and can also be used green when harvested young. Growing 80 to 100cm tall, flowering takes 12 to 14 weeks. It can also used for dried arrangements and is considered to be an everlasting.

Catananche caerulea 'Amor Blue' is a charming plant, with blue, star like flowers each with a dark eye and unique papery petals. They look best when grown in groupings, rather than one or two plants and don’t mind crowding. Plant en-masse in prairie style or meadow plantings, mix them up a little with other hardy perennials and grasses.

Catananche caerulea 'Amor White' produces stunning blooms of white, star like flowers each with a dark purple-blue eye and unique papery petals. The blooms rise on single stems above neat clumps of grey-green foliage. Super when planted the border, they also make a wonderful, long lasting cut or dried flowers.

Persian Cornflower is an attractive clump forming cornflower, with bushy, branched plants and the unusual characteristic of being perennial and flowering in the first year. Very adaptable to both dry and moist locations. Large deep lavender-pink blooms adorn the divided foliage throughout summer.

Centaurea macrocephala is a magnificent perennial that ideal for providing vertical interest in a sunny, well-drained herbaceous border. The golden-yellow shaggy thistle-like blooms are on strong stems and mid-green, lance-shaped leaves are followed by attractive seed heads.

Native to the meadows and woods of the mountains of Europe, Centaurea montana flowers from late spring with large flowers that are fringed in an intense violet-blue with deep purple centres and most attractive, very deeply cut petals. Easy to grow, it is an excellent garden plant as well as cut flower.

Cephalaria gigantea is a gentle giant that has an informal look that is perfect for looser planting styles. With pretty pale butter-yellow scabious shaped flowers, use it as you would Verbena bonariensis planted at the back of a mixed or herbaceous border. The stems are tall but airy and 'see-through'.

'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!

This uncommon Clematis is a graceful, vigorous and very floriferous climber. During summer and all the way through to autumn the plant is covered with golden yellow nodding lanterns. In the autumn the flowers of 'Radar Love' turn into beautiful large tufts of long silvery, silky seed heads that are just as ornamental.

Great for adding vertical interest to a perennial border, or use as accent plants in containers for an exotic feel, the Cleome 'Queen Series' are very easy to grow and last well into autumn. Large flower heads in Cherry, Violet, Rose and White, they make attractive cut flowers and the seed heads can be dried and added to bouquets.

Over the past few years, the new breeding of Coleus has exploded them into hundreds of wild and crazy types of colours and forms. Overwhelmingly the favourite is the Kong series for its sheer presence, each leaf is easily as big as your palm, and probably twice as large as the next biggest Coleus you can buy.

Grown for its outstanding foliage colours, the Kong series of coleus boasts extremely large leaves with irregular edges, each leaf is easily as big as your palm, and probably twice as large as the next biggest Coleus you can buy. 'Kong Red' displays a broad vein of brilliant red down the centre of each leaf.

Coleus has enjoyed a resurgence in popularity. The new breeding has taken a handful of series and exploded them into hundreds of wild and crazy types of colours and forms. Coleus 'Kong Rose' has huge leaves that are rose in the center, with a band of burgundy that flows out to chartreuse edges.

Featuring huge leaves that are coral in the centre and edged in bright green, Coleus 'Kong Salmon-Pink' is a 'Premium Shade' variety, that are great for large containers and mass plantings, performing best and showing the most intense colour in full shade, they also work well for indoor plant programs. It's hard to go wrong with this plant.

Coleus 'Kong Scarlet' has huge leaves that are dark red with veins trailing out to chartreuse edges. Coleus colours become more vibrant when they get more shade. This is very unusual behaviour, and explains why Coleus is a popular choice for under-the-tree plantings and shade-of-the-building gardens.

The 'Wizard' Series is an excellent example of the new developments of coleus, it is the best seed raised strain for bedding and containers. From the brilliant apricot-bronze Sunset, to red-veined maroon Velvet Red, each is a distinctive work of art. The heart-shaped leaves show their colour early and keeps its hues right through the worst summer heat and humidity. Available in single colours or as a mix.

In adorable shades of apricot, peach with a soft rose centre, the new Cosmos bipinnatus 'Apricotta' will soon become a firm favourite amongst florists and gardeners. The tall plants are early to flower, they make a wonderful display in borders and the long stems are perfect for cutting .

Cosmos bipinnatus ‘Cosimo’ is a series of colours and forms that and give a wonderful effect when planted in combination or in large drifts. 'Cosimo Collarette' blooms with voluptuous semi double flowers, in light pink with white stripes to pure white edged with pink.

Cosmos bipinnatus ‘Cosimo’ is a series that have each been awarded one of the most prestigious horticultural awards, the Fleuroselect Award. Early flowering and uniform, the plants grow to a height of 50 to 60cm, short enough to be used at the front of the border, they can also be used in larger container planting.