October

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.

Knautia macedonica has been hugely fashionable for years and is likely to remain so for many more. This lovely and versatile perennial blooms from late spring to autumn with dark-crimson, richly glamorous pompoms. Established plants produce literally hundreds of blooms in one season.

Knautia arvensis is an attractive native perennial herb of well drained grassland. It can be found throughout Europe in meadows, rough pasture, hedgerows and verges. Though it is by nature a perennial, it will flower and produce seed the first year if grown as an annual, either autumn or spring sown.

Woad has been grown for its indigo-blue pigment and for its medicinal properties since the 13th century, recently capturing popular imagination as the blue dye for body paint used by the Celts. This fashionable plant has a fresh wildflower appearance that can brighten any garden.

'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.

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.

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 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.

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.

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.

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.

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.

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.

Helenium hoopesii is considered by some to be the most valuable of the species. It blooms with bright golden yellow disk florets that each form a kind of rounded knob that transforms the flower from your typical two-dimensional daisy into something much more interesting and sculptural.

If there's one plant that can inject a little razzle-dazzle into the border during gloomy late summers it is Helenium. From late July 'Helena' blooms with masses of vibrant blooms in a spectrum of rich colours from gold to mahogany red. Perfect for the back of the border and wonderful for cutting.

Geum rivale, the Water avens is a native perennial of slow-draining or wet soils. Flowering prolifically it is particularly useful in damp soils and makes a good show besides ponds. It produces both nectar and pollen and is an excellent plant for attracting pollinators and amphibians to the garden.

‘Vision Light Pink’ produces masses of large luminescent light pink flowers with red veins from early spring through to late summer. This long-lived, drought-tolerant perennial is useful as a small scale groundcover and in mixed borders. Use it in rock gardens, stone walls or even in container plantings.

Geranium pyrenaicum is a European species and well known for being one of the most floriferous of Geraniums. 'Summer Snow' is an easy to grow, yet hard to find white flowered cultivar which produces profuse quantities of white flowers each with deeply notched petals.

"Splish Splash" is a fascinating, rare and prized border plant and one of the most beautiful, striking and unusual perennial geraniums. Very easy to grow, the clumps of divided foliage are topped with mauve-blue splashes and flecks on pure white petals, each petal appearing to be individually designed and painted.