Note: The retreat of the sea ice has been faster than predicted: Arctic September sea-ice extent from observations (thick orange line) together with the mean value (solid grey line) from 13 IPCC AR4 climate models and the variance (dotted black line) of models runs.
Be careful when buying for your garden. People are one of the main introducers of invasive species, especially flora. Many of the invasive species have been introduced for ornamental purposes. Do put an extra effort in finding out whether the plant you want is native to your environment.
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