Q: Is it better to buy small perennials or larger ones that have blossoms?
A: That depends on your budget. The smaller size saves money. The bigger size gives instant gratification. But remember, if you plant a big perennial, the soil around the roots will be lighter than the garden soil, so the plant will dry out more quickly. Give it extra water until the roots grow into the surrounding soil. I usually pile up soil in a berm, creating a moat that I can fill with water.