Link: http://www.independent.co.uk/environment/garden-centres-selling-bee-friendly-plants-pesticides-harmful-neonicotinoids-a7734516.html

Researchers bought 29 such flowers from five different companies, four major retailers and one local nursery. They found all but two were contaminated with pesticides or fungicides and more than 70 per cent contained the controversial neonicotinoid chemicals which have been shown to cause significant harm to bees. Gardeners who wish to gain the benefits without the risks should seek uncontaminated plants by growing their own from seed, plant-swapping or by buying plants from an organic nursery.”