Ornamental grasses are a beautiful addition to any garden, adding texture, movement, and interest to your landscape. But as with any plant, they require maintenance to keep them healthy and looking their best.
One question that often arises is whether or not you can split ornamental grass in the fall. While fall is a great time for many gardening tasks, dividing ornamental grasses is not one of them.
In this article, we’ll explore why fall is not the best time to divide ornamental grasses and when you should tackle this task for the best results.
So grab a cup of coffee and let’s dive in!
Can You Split Ornamental Grass In The Fall
Unfortunately, the answer is no. Fall is not the ideal time to split ornamental grasses. While many perennial plants thrive with fall division, dividing grasses in the fall can be deadly for the plants.
When you split a grass clump, it needs time to re-establish in the soil. If you divide it in the fall, the roots may not have enough time to take hold before winter sets in. As a result, the roots can freeze out during the cold winter months, leading to the death of the plant.
Why Fall Is Not The Best Time To Divide Ornamental Grasses
Ornamental grasses are different from most perennial plants in that they do not respond well to fall division. When you divide a grass clump, it needs time to establish itself in the soil, and the roots need to be able to take up nutrients and water to support new growth. However, if you divide the clump in the fall, the plant may not have enough time to re-establish itself before winter sets in. This can lead to the roots freezing out during the cold winter months, which can ultimately cause the death of the plant.
It’s important to note that dividing grasses is crucial for their health and longevity. Over time, the center of the clump dies off, leading to an unsightly grass stand that is less able to stand upright through the growing season. Dividing every three to five years helps keep the grasses strong and viable.
The best time to divide ornamental grasses is in early spring, just as new growth begins to set forth from their base. This allows the plants enough time to establish themselves before summer arrives and they enter their period of active growth.
The Best Time To Divide Ornamental Grasses
Knowing when to divide ornamental grasses is crucial in ensuring their survival and health. The best time to divide ornamental grasses depends on the type of grass and the climate. In general, it is best to divide cool-season grasses either in the spring or early fall, so they have time to recover before winter sets in. The ideal time for dividing cool-season grasses is early spring, as this gives them enough time to establish themselves before the summer heat arrives.
On the other hand, warm-season grasses should be divided in late spring or early summer when they start actively growing. This is because warm-season grasses do not come into growth until late spring, so it is best not to divide them until then. Dividing warm-season grasses too early can stunt their growth and cause them to struggle.
For evergreen ornamental grasses or grass-like perennials, the best time to divide is in the spring. Since evergreen grasses never go dormant, it is best to divide them in the spring so that the wounds created by cutting into the clump have plenty of time to heal before the grass has to survive winter cold.
It is important to note that dividing ornamental grasses every two to three years helps them maintain their size, health, and vigor. Dividing them also prevents them from becoming weak and spotty in growth. When dividing ornamental grasses, it is best to use a sharp knife or chain saw for larger clumps.
How To Prepare Ornamental Grass For Division
Dividing ornamental grasses is a great way to rejuvenate the plant and create new plants for your garden. However, it’s important to prepare the grass properly before dividing it to ensure that the process goes smoothly and the plant remains healthy.
First, choose the right time of year to divide your grass. In general, it’s best to divide warm-season grasses in the spring or early summer before they actively flower. Cool-season grasses can be divided in the spring or early fall, so they have time to recover before winter sets in. Evergreen grasses should be divided in the spring so that the wounds created by cutting into the clump have plenty of time to heal before winter.
Next, water the grass well a few days before you plan on dividing it. This will help loosen the soil and make it easier to dig up the clump. You may also want to trim back any dead or damaged leaves before dividing the grass.
When you’re ready to divide the grass, use a sharp spade or shovel to dig up the entire clump. If the clump is too large to handle, you can use a saw or pruning shears to cut it into smaller pieces. Make sure that each piece has some healthy roots attached.
Before replanting the divided pieces, trim off any dead material and water them thoroughly. Newly divided grasses will need frequent watering while they become established. Once they are well rooted, you can decrease or quit watering.
It’s important to note that dividing grasses can be hard work, especially if you’re dealing with larger clumps. You may want to enlist the help of a friend or neighbor if you’re not up for the task alone.
Tips For Successful Division Of Ornamental Grasses
Dividing ornamental grasses is an essential task to keep them healthy, vigorous, and attractive. Here are some tips for successful division of ornamental grasses:
1. Timing: The best time to divide ornamental grasses is in late winter or early spring, just before the new growth starts. This timing allows the plants to establish their roots before the hot summer months.
2. Preparation: Water your plants well for several days before division. Cut back the stems so that only 2 to 3 inches are left above the soil line. This will make transplanting easier and less stressful for the plant.
3. Tools: Use sharp tools such as a spade or ax to divide the clump into sections that are at least 3” in diameter, from the outside edge of the clump. Avoid taking divisions from the center of the clump.
4. Soil: Prepare a new home for the additional plants that you are about to create in advance. Dig a hole twice the size of the division root ball and mix the soil removed from the hole with your favorite compost or garden soil.
5. Planting: Place the division in the hole so that crown is slightly below the soil line. Fill the hole with soil mixture, water, and fertilize with a balanced fertilizer.
6. Aftercare: Water regularly for several weeks after planting until the plant becomes established.
By following these tips, you can successfully divide your ornamental grasses and create new plants that will add beauty and interest to your landscape. Remember to avoid dividing in the fall and choose a cloudy cool day for best results.
How To Care For Newly Divided Ornamental Grasses
If you’ve recently divided your ornamental grasses, it’s important to give them the proper care to ensure they thrive. Here are some tips for caring for newly divided ornamental grasses:
1. Watering: Newly divided grasses need frequent watering to help them become established. Water them deeply and regularly until you see new growth. Once they are well rooted, you can decrease or stop watering altogether.
2. Fertilizing: You can fertilize your newly divided ornamental grasses with a slow-release fertilizer to help promote growth. Follow the instructions on the package for the best results.
3. Mulching: Adding a layer of mulch around your newly divided grasses can help retain moisture in the soil and protect the roots from extreme temperatures.
4. Sunlight: Ornamental grasses typically prefer full sun, but some varieties can tolerate partial shade. Make sure your newly divided grasses are getting the appropriate amount of sunlight for their specific variety.
5. Pruning: You may need to prune your newly divided grasses to remove any dead or damaged foliage. This will help promote new growth and keep the plant healthy.
6. Patience: It’s important to be patient with newly divided ornamental grasses. They may take some time to establish themselves and start growing again, so don’t be discouraged if you don’t see immediate results.
By following these care tips, you can help ensure that your newly divided ornamental grasses thrive and continue to add beauty to your garden for years to come.
Conclusion: When To Divide Ornamental Grasses For Optimal Growth And Beauty
Dividing ornamental grasses is an essential part of their care and maintenance. It not only ensures their survival but also helps them thrive and maintain their beauty. The best time to divide ornamental grasses depends on the type of grass and the region you live in.
In general, it’s best to divide warm-season grasses in the late spring to mid-summer when they start blooming. On the other hand, early spring is the best time to divide cool-season grasses, but they can also be divided in the fall. However, be mindful of freeze/thaw cycles that could heave the plants out of the ground if you opt to divide and replant in the fall.
If you have large areas that would benefit from being filled with ornamental grasses or walkways and paths that would be attractive if lined by these plants, try growing from divisions. Most ornamental grasses grow easily and quickly from just a small start. A hollow center indicates when to divide ornamental grasses. Usually, division every two to three years is recommended.
It’s important to divide grasses while they are a manageable size, as it can be incredibly difficult to dig out and divide overgrown grasses. Most grasses have tough, vigorous root systems and may have to be divided with a shovel, saw, or ax. Replant promptly and never let the roots dry out.
In conclusion, dividing ornamental grasses is crucial for their health and beauty. The best time to divide depends on the type of grass and your region’s climate. It’s essential to divide them while they are a manageable size and replant promptly without letting the roots dry out. By following these guidelines, you can ensure your ornamental grasses thrive and add beauty to your landscape for years to come.
