The state already knows that the Mexican petunia (Ruellia brittoniana) is an invasive exotic yet it is still for sale in our garden centers. Though it is a tough plant (which is part of the problem) that produces attractive purple flowers - beware because it will spread all over your yard and it won't stop there! If you want a purple blooming plant check out the Tibouchina genus. They also have gorgeous purple blooms and the plants are well behaved and only grow where you plant them!
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