Wondering if thyme is a perennial that comes back after winter? Here's what to know.

No wonder many dahlia growers ask, "Are dahlias perennials or annuals?" Dahlias often bloom with the exuberance of favorite annual plants like zinnias and marigolds. From midsummer until frost, ...

Ever wondered why some of your plants die after one season, while others come back year after year? If you've pondered that, you've likely noticed the difference between two categories of plants: ...