Gardens: new plants for 2013 - in pictures

Calibrachoa 'Superbells Lemon Slice' These dainty relations of the petunia were introduced from South America in the 1980s, and have since been developed from sprawling and sparsely flowered to neat and prolific. ‘Lemon Slice’, from Japan, makes a lovely specimen basket; the flowers are small and its profusion is never overwhelming. Unlike earlier varieties, it’s resistant to soil diseases. Buy from suttons.co.uk Photograph: Chris Brown Photography

Clematis 'Lemon Beauty' This pretty, grapefruit-scented spring clematis flowers again in summer. Opening from lime green buds, the large, nodding blooms are held on contrasting, purple stems, and set against rich, green leaves. Ideal climbing through a mature shrub or on a trellis by the door, where you can appreciate the scent. Buy from Thorncroft Clematis Photograph: Szczepan Marczynski

Digitalis 'Illumination Chelsea Gold' A hybrid between our native foxglove and a semi-shrubby species from the Canary Islands, its golden apricot-orange flowers, prettily speckled in the throat, keep coming for months and never set seed. Popular with bees, and best in well-drained soil. Buy from thompson-morgan.com Photograph: Thompson & Morgan

Petunia 'Eliza' This is the latest in the Tumbelina series of double-flowered petunias for baskets and tubs. The vivid, dark-veined, pink flowers featuring white centres are scented and open all summer on neat plants. Buy from mr-fothergills.co.uk Photograph: Graham Rice/Garden Photos.com

Rosa 'Drift Pink' These hybrids between miniature and ground-cover varieties are the first roses for hanging baskets. ‘Red Drift’ is a pale-centred semi-double resistant to black spot. The semi-double ‘Peach Drift’ and the white-centred single ‘Pink Drift’ are resistant to black spot, powdery mildew and rust. They’re also good tumbling over a low wall. The downside? No scent. Buy from unwins.co.uk Photograph: Moerheim New Plant

Kale 'Black Magic' An improved form of the popular Italian black kale, ‘Cavolo Nero’, developed for our climate. It carries its long dark leaves on shorter stems so they don’t topple as they mature, and it doesn’t bolt. Buy from plantsofdistinction.co.uk Photograph: Tozer Seeds

Onion 'Red Arrow' This red onion set, developed in Lincolnshire, is one of the earliest to mature, in July: it also improves in storage and is ideal for salads and pizzas. Plant 14 sets per metre of row and it will produce 60-90mm onions. It does not suffer from bacterial problems, and the sets have been heat-treated against bolting. Buy from thompson-morgan.com Photograph: Allium Seeds UK

Raspberry 'Erika' This raspberry from northern Italy combines high yields, exceptional sweet flavour and a lovely orange-red colour with a first crop in early summer and a second crop later. Expect 1kg per plant across the two harvests, or cut the plants down in spring for a later 2kg crop. Buy from dtbrownseeds.co.uk Photograph: Hargreaves Plants

Runner bean 'Stardust' With our unpredictable weather and the decline in bees, many gardeners find their runner bean crop is patchy; a good pod set needs bees and moisture. This white-flowered runner brings genes from french beans, which are less fussy about setting; ‘Stardust’ has better pod set, and a heavier crop of longer stringless beans than earlier varieties of this type. Buy from marshalls-seeds.co.uk Photograph: Tozer Seeds

Tomato 'Juanita' Grafted tomatoes are the way to get a good crop in the same greenhouse or garden soil year after year – and a better crop everywhere else. Their resistance to disease has transformed tomato growing: couple that with a cherry tomato so tasty that it came top in blind taste tests involving hundreds of tasters, and you have a winner. Buy from suttons.co.uk Photograph: Sutton Seeds