We have found 12 plants that meet your criteria.

bishop's weed
Ammi majus bishop's weed A billowing, non-invasive cow parsley £2.49 Buy
bishop's weed
Ammi visnaga 'Green Mist' bishop's weed Wonderfully etheral in the border £2.99 Buy
alkanet
Anchusa azurea 'Dropmore' alkanet Vibrant blue, edible flowers £2.49 Buy
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snapdragon
Antirrhinum majus 'Admiral White' snapdragon Elegant in the summer border £2.49 Buy
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columbine
Aquilegia vulgaris columbine Looks good in most settings £2.99 Buy
foxglove
Digitalis parviflora foxglove An exotic-looking beauty £2.99 Buy
foxglove
Digitalis purpurea 'Sutton's Apricot' foxglove Impressive summer spires £2.49 Buy
leaf beet
leaf beet 'Rhubarb Chard' leaf beet Purple-tinged leaves with crimson midribs £1.29 Buy
leaf beet
leaf beet 'Swiss Chard' leaf beet Considered to have the best flavour £0.99 Buy
rhubarb
rhubarb 'Victoria' rhubarb One of the finest rhubarb varieties £2.99 Buy
coneflower
Rudbeckia occidentalis 'Green Wizard' coneflower Extraordinary and exotic-looking flowers £2.99 Buy
sweet violet
Viola odorata sweet violet Sweetly scented, edible flowers £2.49 Buy