For gardeners seeking to create a cool and understated planting scheme, true blue flowers will certainly help to create a calming atmosphere. In addition, for those considering flower bed ideas ...

When growing alliums, many cultivars are marketed toward growers looking for true-blue flowers, but colors may vary. Most plants of this type open to reveal a range of blue-purple tones.

Less than 10 per cent of the 280,000 species of flowering plants produce flowers which appear blue. True blue pigment does not exist in plants, unlike for the colours red, yellow and orange.