October

Boasting the most desirable of deep blue flowers, Scabiosa ‘Oxford Blue’ is a reselected form that stands out from other varieties, it boasts the most desirable of deep lavender-blue flowers. The large, domed, dark centred cushions with contrasting white 'pins', bob atop strong stems. A prodigious bloomer, they will supply you with excellent cut flowers.

Cleanliness is next to godliness even in history. For centuries Saponaria officinalis has helped keep us clean while providing a little loveliness in our gardens. The flowers are an important nectar source and emit a pleasant and intriguing clove-like scent, seducing both night moths and butterfly species.

Santolina, commonly known as Lavender Cotton is a small shrub with soft, woolly, finely divided foliage, that make neat, rounded bushes. They are valuable for mass planting, ideal for knot gardens and small hedging around herb gardens etc. It will stand any amount of clipping and shaping - a perfect plant for control freaks.

This Japanese species of Burnet has infiltrated our psyche and somehow manipulated us so that we can find no fault with this most refined of perennials. Flowering in the first half of summer, the highly tactile flowers float like dainty ghosts at the tips of their slender stems.

Sanguisorba officinalis is a native of Europe and an old-world herb that is currently enjoying a resurgence in popularity thanks to the revival of interest in perennial gardens and naturalised form of planting. Perfect for natural style planting schemes, it looks right at home in a swaying sea of grasses.

An absolute gift to flower arrangers, this is a noble and ornamental plant for the back of any border making nice clumps of foliage. It is, of course, the flowers that are remarkable: three or four inches across, “green” is one’s immediate impression on seeing them.

Pulsatilla alpina subsp. alpina is a charming form, with white flowers, the outer segments flushed with bluish-purple. A favourite for collectors, they have a protracted flowering period and followed by attractive seed heads, they are showy, long-lived and reliable plants with a lengthy period of interest.

Collected at altitude in Japan and introduced in 2006, Polemonium yezoense 'Purple Rain' is one of the best new introductions in recent years. With bronze-purple lacy foliage, dark stems and violet-blue flowers, it is the darkest flower form of Polemonium available.

The white form of the lovely Jacobs Ladder, named after the slender, fresh green leaflets arranged like the rungs of a ladder. Blooming in late spring to early summer, the bright foliage and white flowers will brighten shady locations. Both the flowers and the attractive ferny foliage are excellent for cutting.

The physostegia has prolific dazzling tubular flower spikes which are arranged on distinctly square stems. This oddly named perennial is perfect for the middle of a mixed or herbaceous border. The flowers are on swivels that can be bent right or left on the stem - a useful feature for floral displays.

Persicaria orientalis ‘Cerise Pearls’ is a new, modern-day variety that grows to a more manageable height of 100 to 140cm . Tall enough to give the same airy effect, yet so much easier to place in the garden. From August to October the whole plant is spectacularly draped with long, dangling, velour-like cerise tassels.

Russian Sage is one of the great garden plants of all time, but if you've been frustrated by their floppy nature, this new variety will be a welcome addition. Growing to about 60 to 75cm tall, Perovskia atriplicifolia 'Taiga' is also the first Russian sage available as a first year flowering perennial.

Pennisetum alopecuroides var. viridescens has broader leaves and darker flower heads than the regular species and, growing to around 60cm tall, it is also slightly smaller. It has graceful smoky purple-black plumes that contrast nicely with the slender arching, glossy, deep green foliage.

Pennisetum alopecuroides is an especially appealing species, it changes its appearance and colour throughout the growing season. In late summer graceful fountain-like plumes emerge in profusion, they slowly change colour to a blend of green, soft pinks and light-colored maroons before maturing to light tan.