Dig, pry, divide plans (Oregonian)

Dig, pry, divide plans (Oregonian)
Dividing is a matter of digging up plants, prying them apart with hands, spades, knives or an ax and replanting them in new holes, said Weston Miller, a horticulturist for Oregon State University’s Extension Service. As perennials grow from the crown and the clumps get larger, plants decline in vigor and have fewer flowers. If you wait too long to divide, flowering can stop altogether.