6 Pretty but Problematic Perennials
01 of 06 Lily-of-the-Valley Yeah, I know, this one is a classic garden plant beloved for its sweetly scented, white, bell-like flowers in early spring and ability to thrive in dry shade where not much else will grow. But I've come to really dislike lily-of-the-valley ( Convallaria majalis ) because, a year or two after planting, it starts to spread like wild, choking out nearby plants. Once it's established, reining in this aggressive spreader requires relentless vigilance. Plant This Instead: Foamflower ( Tiarella spp.) is a native plant that also can grow in shady spots but won't take over the garden. Though not fragrant, its frothy spring flowers attract pollinators, and some varieties offer interesting foliage. 02 of 06 Perennial Bachelor's Button A catalog description focused on a parade of spring and summer flowers and easy care can beguile those who have never grown perennial bachelor's button ( Centauria spp). B...