Extension

When it comes to popular shade perennials, the hosta is a favorite among gardeners. It’s easy to grow, and new varieties are introduced each year. One issue, however, is that they may become too big for the space. Like other perennials, the plants may need to be divided and replanted.

While dividing and replanting can be done at any time during the growing season, the best time is in early spring before the foliage has fully leafed out and the soil is cool and moist.

To divide a hosta, start by digging up the entire plant about 6-18 inches from the plant base. Dig a circle around the clump of roots, loosen the soil and gently lift it out of the ground. A garden fork works well for this process.

Don’t worry about cutting through the massive root system. Hostas store lots of energy and will quickly produce new roots when replanted. Once the plants are dug up, simply divide them by cutting through the clump with a spade or two garden forks. Make sure each new section has several growing points and some roots. It’s easier to see the individual plants and their rhizomes by washing off the soil.

When gardeners are ready to replant, make sure to have a flower bed with rich soil. Prepare the soil with a healthy dose of compost. Go ahead and sprinkle in a balanced fertilizer. Set the new plant in the hole at the same depth it was previously growing. Ensure the white basal portions of the stems are just below the surface. If the soil was washed off during plant division, make a good-sized hole and spread the roots out in a fan shape. Next, replace the soil and pack it firmly around the roots. Water thoroughly and top with a few inches of mulch.

These newly planted plants should be kept well-watered for the first couple of weeks, especially if there is no rainfall. The plants are recovering from division, and their leaves may desiccate quickly on warm days. Don’t be wary of a little leaf burn.

Dividing hostas is a great way to propagate new plants. With a few exceptions, hostas don’t come true from seed. Most “new” plants are propagated.

Keep in mind that after being in the same location for many years, some hostas may die out in the center. If this happens, remove the actively growing plants and discard the dead areas. This will improve the garden’s overall appearance and help keep the plants healthy and well-maintained.