Ground ivy or creeping Charlie (Glechoma hederacea ... Mostly found in wet soils, purple loosestrife (Lythrum salicaria) is a vibrant purple flowering plant that's actually a noxious weed.

It has small, rounded leaves with scalloped edges and delicate blue or purple flowers that bloom in early spring. It also has a much stronger scent than the other two. Ground ivy spreads via ...