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Ornamental grasses are a beautiful and low-maintenance addition to any garden. Over time, these grasses can become crowded and less vigorous, making it necessary to divide and rejuvenate them. Proper division not only revitalizes the plants but also provides you with new plants to expand your garden or share with friends.
Why Divide Ornamental Grasses?
Dividing ornamental grasses helps maintain their health and appearance. When grasses become overcrowded, they may produce fewer flowers and look less attractive. Dividing encourages new growth, improves airflow, and prevents disease. It also allows you to propagate new plants easily.
When Is the Best Time to Divide?
The ideal time to divide ornamental grasses is in early spring or late fall, when the plants are dormant or just beginning to grow. Avoid dividing during the peak of summer, as hot weather can stress the plants. For most grasses, early spring is preferred as it gives the new divisions a full growing season to establish.
Tools and Materials Needed
- Sharp spade or garden fork
- Garden shears or pruning scissors
- Gloves
- Watering can or hose
- Mulch (optional)
Step-by-Step Guide to Dividing Ornamental Grasses
Step 1: Prepare the Area
Water the grass thoroughly the day before dividing to reduce stress and make the soil easier to work with.
Step 2: Dig Around the Plant
Use a spade or garden fork to loosen the soil around the base of the grass clump. Carefully lift the entire clump out of the ground.
Step 3: Divide the Clump
Use sharp garden shears or a knife to cut the clump into sections. Each section should have healthy roots and a few shoots. Aim for divisions about 6-12 inches apart, depending on the grass type.
Step 4: Replant the Divisions
Plant each division at the same depth as it was growing before. Water thoroughly after planting to help establish the roots.
Rejuvenation Tips
Besides dividing, you can rejuvenate grasses by cutting back old foliage in early spring. Remove dead or brown leaves to encourage fresh, vigorous growth. Applying a layer of mulch can help retain moisture and suppress weeds.
Additional Care Tips
- Fertilize in early spring with a balanced, slow-release fertilizer.
- Ensure proper watering during dry spells.
- Divide every 3-4 years to keep plants healthy.
- Monitor for pests and diseases, removing affected foliage promptly.
With proper care and timely division, your ornamental grass collection will thrive and continue to add texture and movement to your garden for years to come.