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's not confirmed how the virus is spread, but sap-sucking insects, nematodes and gardening tools, such as pruning knives, are likely contenders.Canna leaves develop pale spots and streaks, as well as a distorted, crinkly look, while flowers may also become

Learn how to care for canna plants with Carol Klein's comprehensive video guide covering planting, overwintering, and dealing with viruses such as canna yellow mottle, and bean yellow mosaic.springMore advice on growing exotic plantsGrowing exotic

Learn about the different techniques for protecting cannas and gingers over winter, with Chris Beardshaw's video advice on covering them in the border or lifting and storing them indoors.October-NovemberMore advice on caring for cannas and gingers

Thanks to our warmer climate, most of us can now enjoy traditionally tropical plants in our summer gardens. Canna 'Tropicanna' is surprisingly tough for such a lush-looking plant, and can survive outdoors all year round (with a little protection