Hummingbirds, butterflies, and bees love purple firespike ... so you don't need green thumbs for the purple flowers to flourish. Read more: Plants You Shouldn't Grow Right Next To Your House ...

These late-blooming plants native to North America help feed butterflies — especially monarchs-— at a crucial point.

Verbena is relatively drought-tolerant once established, making it a low-maintenance choice for butterfly gardens. The vibrant purple, pink, and white flowers add a lovely touch to any garden setting.