Dividing Ornamental Grass: How to Divide and Care for Your Plants

Ornamental grasses are a popular choice for gardeners due to their low maintenance and aesthetic appeal. One common practice for maintaining healthy ornamental grass is dividing them. Dividing your ornamental grass can help prevent overcrowding, promote new growth, and extend the life of your plants. In this article, we will discuss the steps for dividing ornamental grass and provide tips for caring for your plants afterward.

What is Dividing Ornamental Grass?

Dividing ornamental grass is the process of separating an established clump of grass into smaller sections. This is usually done to promote healthier growth or to control the size of the plant. The process involves digging up the clump and cutting it into smaller divisions, each with their own set of roots and shoots.

When should you Divide Ornamental Grass?

The best time to divide ornamental grass is during early spring or fall when the plant is in its dormant phase. During these periods, the plants are less likely to experience transplant shock or require excessive watering. However, you can divide your plants at any time of the year as long as you take extra care to keep the plants hydrated and shaded.

Step-by-step Guide to Dividing Ornamental Grass

Step 1: Prepare the Tools and Soil

Gather the necessary tools such as a sharp cutting tool, a shovel or spade, a watering can or hose, and fresh soil or compost. Make sure the soil is well-draining and rich in nutrients to encourage healthy growth.

Step 2: Dig up the Clump

Using a shovel or spade, dig up the entire clump of ornamental grass. Be careful not to damage the roots or cut too deeply into the rhizomes. You may need to use a sawing motion to separate any stubborn roots.

Step 3: Separate the Clumps

Once you have dug up the entire clump, use your cutting tool to divide the clump into smaller sections. Each section should have its own set of roots and shoots. You can also trim the foliage by one-third to reduce stress on the plants.

Step 4: Replant the Divisions

Plant each division in its own hole, ensuring that the top of the root ball is level with the soil surface. Water each division thoroughly and add additional soil or compost to ensure adequate moisture retention. You can also add mulch around the base of the plants to retain moisture and deter weed growth.

Caring for Divided Ornamental Grass

After dividing your ornamental grass, proper care is essential to promote healthy growth and longevity. Here are some tips to help you care for your divided plants:

Water Regularly

Regular watering is crucial to ensure that the plants establish strong root systems. Water the plants deeply once a week, or more often during hot and dry weather conditions. Avoid overwatering, as this can lead to root rot and other diseases.

Fertilize Occasionally

Use a slow-release fertilizer to provide nutrients to the plants. Apply the fertilizer once or twice a year, following the manufacturer's instructions. Over-fertilizing can lead to excessive growth and weaken the plants.

Prune Annually

Trim the foliage back to one-third of its height each year to promote healthy growth and prevent the plants from becoming too tall or leggy. Use a sharp cutting tool and avoid leaving any stubs.

Protect from Winter Frost

Some types of ornamental grass are vulnerable to frost damage. Protect your plants by covering them with a layer of mulch or burlap during the winter months. Remove the coverings in the spring when temperatures rise.

A close-up of divided ornamental grass

Dividing your ornamental grass is a simple but effective way to promote healthy growth and prolong the life of your plants. By following the steps outlined in this article and providing proper care, you can enjoy lush and vibrant ornamental grasses in your garden for years to come.

gardening, landscaping, ornamental plants, plant care, horticulture