June

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 you like well-branched, free-flowering, traditional sunflowers that are not too tall, 'Holiday' is the one you've been looking for. At 120cm (4ft) tall, with golden yellow petals and dark centres, it bears armfuls of cheery 15 to 20cm blooms. Irresistible for cut flower bouquets and for a large garden planting.

With perfectly shaped blooms with overlapping orange petals that surround a pollenless dark brown central disc, Helianthus 'ProCut Orange' is the first choice for growers who are looking for that traditional sunflower appearance. A true Day length neutral cultivar that flower quickly at all latitudes and take just 60 to 65 days to maturity.

Lighter than orange and darker than yellow, Helianthus ‘ProCut Peach' is the latest colour to be added to the series, a beautiful warm, pale yellow hue that shimmers towards the peach-coloured range. It produces perfectly shaped, single pollenless blooms. Sow mid spring to mid summer for continuous blooms.

Helianthus 'ProCut Plum' is an elegant sunflower with petals the most delicious mix of soft colours. Café-Au-lait lightly brushed with dusky bronze-crimson. In the vase it mixes well with other blooms in bronze and reddish tones. Just 60 to 65 days to maturity, sow mid spring to mid summer and cut when the petals begin to unfurl from the face

Helianthus 'ProCut Red' is a stunning new dark addition to this widely grown series. Flowers are a deep, rich rusty-red, one of the best dark colours on the market. Dark chocolaty centers gradually give way to ruby ringed petals that fade to a lighter tip. Sow mid spring to mid summer for continuous blooms.

Helianthus annuus 'ProCut White Nite' is a professional, pollenless cut-flower variety that is used by florists all over the world. The cream petals mature to white and contrast beautifully with the dark brown centre. They plants are uniform and vigorous in growth even under low temperatures

With most sunflowers, the beauty is in the flower petals, but the multi-layered, green outer calyxes of Helianthus 'Sunfill Green' create the show. This fast growing annual source of cut fillers for bouquets produce geometric flower heads for use as bouquet greenery. Sow successionally, mid spring right through to mid summer.

Helianthus 'Sunfill Purple' is a novel purple sunflower with sumptuous dark centers and petals tipped with edged hints of purple. These fast-growing sunflowers produce geometric flower heads for use as bouquet greenery. Just 50 days to maturity, sow successionally, mid spring right through to mid summer.

Heliopsis ‘Summer Nights' is a special selection made by Dale Hendricks of North Creek Nurseries, USA. Introduced in 2004 it produces a profusion of single blooms in early to mid-summer, with rich, deep golden-yellow petals and deep mahogany centres. The foliage is red-tinted and the stems are tinted dark burgundy.

Based on hybrids bred by the doyenne of the Hellebore world, Helen Ballard, these must be some of the finest and most beautiful of the race we have to offer. Large flowers are produced in a variety of colours from dark purple to white - often extravagantly mottled and marked.

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.

Gorgeously scented pure white flowers are held above rosettes of dark green leaves. Like all sweet rockets it is highly attractive to bees and other beneficial insects, the fragrant flowers perfume the air in late spring and early summer evenings. The night-scented stock is a close relative.

Dames Rocket produce flowers varying in colour from deep rich purple, through all the paler lilac shades to white. Highly attractive to bees and other beneficial insects, the fragrant flowers perfume the air in late spring and early summer evenings.

Dames Rocket was the favorite flower of Marie Antoinette. The genus name Hesperis is Greek for evening, a reference to this plant's aroma becoming ever more conspicuous towards evening. The fragrance is as sweet as a violet's. The night-scented stock is a close relative.

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.

An extremely easy to grow, hardy annual plant, Iberis umbellata is quick to grow and is in bloom within two months from a spring sowing. This beautiful lilac form has glossy green leaves and the familiar clusters of fragrant flowers which are attractive to bees, butterflies and other pollinating insects.

Iberis umbellata 'Rose-Cardinal' is quick to grow and is in bloom within two months from a spring sowing. Extremely easy to grow, they are invaluable for underplanting and for use in rock gardens and containers. They are considered one of the best plants grown for edging purposes.

Iberis umbellata is a popular and easily-grown annual plant that is perhaps more versatile than you might imagine. Considered one of the best for edging purposes, they are also invaluable for underplanting, for rock gardens and containers. Easy to grow and fast to flower, this fragrant hardy annual will quickly cover any unsightly bare spots in the garden.

'Melton Pastels' is a great border plant, densely flowering plant with strong stalks of pin cushion flowers in shades of shades of pink, cherry red, mauve and purple. The tall stems make excellent cut flowers and are good for the middle of the border, giving a succession of blooms through till autumn.