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Euchloe crameri on gum rockrose fruit
One thing I know for sure, the use of native plants - as long as they are purchased from reliable stores or collected without harming wild populations - has multiple advantages. Plants purchased in traditional orchards, on the contrary, besides being often exotic, expensive and demanding more attention, may have other problems as well. A study recently undertaken by GreenPeace showed that the majority of a sample of ornamental plants sold in European garden centres and supermarkets do not comply with the legislation that regulates the use of bee-killing pesticides. You can read the article here and download the study here. Portugal is not among the countries where samples were collected, but Spain, France and Holland, among many others from which we import ornamental plants were included. Therefore, fellow gardeners, when the time comes to buy your plants, be careful. In Portugal there are nurseries and companies that meet all the rules and even go beyond them. An example - I am feel free to advertise as I am not getting an profit here - is the Cantinho das Aromáticas, that sells organically grown potted plants, many of them belonging to our native flora.