Which Perennials Can Be Divided?

Can you split all perennials?

While you can divide most perennials any time from spring to fall, those two seasons are best. This is because dividing your perennials can be stressful on the plants—and they'll recover better from the shock in cool, moist conditions.

How do you divide overgrown perennials?

Cut through the root ball with a knife to divide the plant.

Make sure each section has a large clump of roots attached to it or else it may be difficult to support the new growth. If you need to separate larger perennial plants, you may need to pry them apart with gardening forks or even use an ax to chop it.