Plant These 12 Perennials in May and You'll Have Happy Plants All Summer and for Years to Come

Plant These 12 Perennials in May and You'll Have Happy Plants All Summer and for Years to Come

Credit: Frédéric Collin / Getty ImagesIf you’ve been itching to get your hands in the garden, the good news is that May is the perfect time to get planting. Most USDA zones are safe from the threat of frost this month, meaning that many perennials (and even some annuals) can, and should, be planted now."The month of May represents my preferred planting time for perennials because it marks the period when soil temperatures become suitable but sum…