If you want months of color, fragrance, and butterflies without the work, Nectar Ninja Hyssop delivers. Soft lavender-blue flower spikes bloom from early summer all the way to fall above neat, aromatic foliage — and the whole plant stays a tidy 1–2 feet without any pruning or staking. Bees and butterflies absolutely love it. It thrives in full sun and even poor, dry soil, making it one of the most forgiving perennials you can plant. Can't grow lavender in your climate? This gives you the same look and scent with none of the fuss, and it's cold-hardy all the way to Zone 3.