6 Perennials You Can Still Divide in December (In Warmer Zones)

1: Hosta (Zones 7-10)

If you possess shade, you possess Hosta. They spread everywhere. They’re also remarkably resilient when dormant, which makes them fair game for December target practice. Besides, dividing hostas is necessary every few years if you wish to keep their unique leaves large and lush.

The crown is dense, so bring a sharp industrial spade and brute force, as only a strong tug or a quick chop can liberate the root masses.

Dig wide around the clump and always ensure that every new piece has a visible bud (the ‘eye’) for future growth. Once you plant each new section, water the babies immediately.

If you want to see exactly how to divide yours, we put together a simple fall guide to dividing hostas that walks through every step.

2: Daylily (Zones 7-10)

Despite the name, Daylilies are far tougher. Their dense root structure forms thick, fleshy roots, packing a lunch for their next move. And they do need it! Daylilies multiply faster than gossip in my town.

Division becomes necessary roughly every three to five years. You’ll know the time is right when the clump looks like a leafy doughnut, meaning the middle section has died.

Digging the entire, enormous thing up often requires savage tearing and yanking the thick roots apart into multiple smaller pieces. Since the plants are dormant, December is the perfect low-stress time for this exercise in separation anxiety.

Skip the shovel altogether. A pitchfork is far superior in separating the tangled roots. Next, plant the new fans immediately. Water them to settle the soil. Water yourself to settle your nerves.

Quick tip: I’ve found they reestablish faster if you trim the leaves down to about 6-8 inches before replanting. It reduces stress and helps the roots take hold quicker during winter.

If you garden around bulb beds, you may also want our bulb guide on what to lift before winter and what can safely stay in the soil.