Rhubarb is a perennial vegetable known for its bright red stalks and uniquely tart flavor. As a hardy, low-maintenance plant, it is a perfect addition to any garden. Over time, rhubarb plants can become large and overcrowded, which hampers their productivity. To maintain a healthy and fruitful rhubarb patch, it is important to divide the plants occasionally. In this article, we will explain how to divide rhubarb plants in a few simple steps.

1. Choose the right time

The ideal time to divide rhubarb plants is during their dormant period. This typically occurs in late autumn after the first frost has caused the leaves to wilt or during early spring before new growth begins. Dividing rhubarb during dormancy reduces stress on the plant and allows it to recover more quickly.

2. Prepare your tools and work area

Before starting the division process, gather all necessary tools and prepare the work area. You will need a sharp spade or garden fork, a tarp or large plastic sheet, pruning shears, and possibly some compost or well-rotted manure for replanting purposes. Lay the tarp near your rhubarb patch – this will be your working area for dividing the clumps.

3. Dig up the rhubarb clump

Using your spade or garden fork, carefully dig around the perimeter of the rhubarb clump you want to divide, loosening the soil without damaging the roots too much. Once you have separated the clump from its surrounding soil, gently lift it from the ground and place it on the tarp.

4. Divide the clump

Examine the rhubarb clump to identify individual crowns – these are distinct growing points with buds at their center that will develop into stalks. Using your hands or the spade, gently separate the clump into individual crowns. Each division should have at least one healthy bud and a generous amount of roots to ensure strong growth when replanted. Trim away any damaged or diseased roots with your pruning shears.

5. Replant the divisions

Dig new holes for the rhubarb divisions at least 3-4 feet apart to allow room for growth and avoid overcrowding. If you wish, amend the planting hole with some compost or well-rotted manure to provide additional nutrients. Place a rhubarb division in each hole so that its crown is level with the soil surface, spreading its roots outwards as you do so. Fill the hole with soil, gently firming it down around the roots to eliminate air pockets. Water the newly planted divisions thoroughly to encourage root establishment.

6. Care for your divided rhubarb plants

In the first growing season after dividing your rhubarb plants, avoid harvesting any stalks, as this will aid in recovery and promote strong growth. Apply a layer of mulch around your rhubarb patch to help retain moisture and suppress weeds. Fertilize regularly with an all-purpose garden fertilizer according to package instructions and keep an eye out for any signs of stress or disease.

Dividing rhubarb plants is a straightforward gardening task that can rejuvenate your existing patch and improve yields over time. By following these simple steps, you can maintain a healthy and productive rhubarb garden for years to come.