Tall Mondo Grass -

(Ophiopogon japonicus)

Groundcover Plants

Other Common Names: Mondo Grass, Monkey Grass
Family: Ruscaceae Genus: Ophiopogon Species: japonicus
Tall Mondo GrassTall Mondo GrassTall Mondo GrassTall Mondo GrassTall Mondo Grass
Brent Wilson Planted · 8 years ago
Top Plant File Care Takers:
Brent Wilson · 5 Edits

Tall Mondo Grass Overview


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Tall Mondo Grass In Member Gardens

Backyardby LaKisha Lee (3 Plants)

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Front Yardby Andrea Dunn (14 Plants)

Brent Wilson

Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Pruning
Mondo Grass never needs pruning. Some gardeners will mow it almost to the ground in late winter or early spring, before new growth begins to emerge.

4 years ago ·
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Brent Wilson

Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Planting
I plant Mondo grass in sites that provide shade to mostly shade and well-drained soil. Mondo Grass is a great choice to plant as a groundcover under large trees or shady sites. It can also be useful to add a grassy texture in container plantings. Mondo Grass grows a little too tall to use between stepping stones. You'll want to use Dwarf Mondo Grass for that.

Before planting Mondo Grass or other groundcover plants as a groundcover, it might be necessary to do some site preparation. First, you'll need to eliminate any weeds or grasses that are growing in the planting area. There are many ways to do this however spraying with a weed killer is easiest and most efficient. If you are planting groundcover plants under a tree, and intend to till the soil before planting, be careful not to till to deep and damage tree roots.

Next you'll need to determine how many plants will be required to fill the area. To do so, measure and multiply the length by the width of the planting area to determine total square feet. Then decide how far you want to space you groundcover plants. You can then use a plant calculator to easily determine how many plants you'll need to fill the area. Here's a link to a plant calculator in Gardenality:


Depending on how fast you want to the groundcover plants to fill and cover the area, I recommend spacing them about half the distance as their listed, mature width. If the plant is listed to grow 18 inches in width, space the plants 9 to 12 inches apart. Before planting, space all plants out in the planting area, or use marking paint to mark the planting spots. Begin by setting out a row of plants along the edge of the perimeter, making sure to space them at a distance far enough from the edge to allow for future spreading. For example, plants that are spaced 12 inches apart should be spaced at a distance of at least 6 inches from the edge of the bed or surfaced area. After setting out the first row, stagger the plants on the second row, and so on until you have filled the area. After all of the plants have been set in place, or marked, you may begin planting. If you mulched the planting area in advance of planting, rake back a small area of the mulch in order to dig planting hole. To plant, dig a hole 2 times as wide, or more, than the container the plant came in. Mix in an organic soil ammendment such as mushroom compost at a 50/50 ratio with the soil removed from the planting hole. Remove the plant from the container and scratch root ball to loosen feeder roots. Place plant in hole making sure that the top edge of the root ball is level or slightly above the level of the ground. Backfill around the rootball with soil mixture tamping lightly as you go to remove air pockets. Water thoroughly and cover with a 1 to 2 inch layer of mulch if you haven't already done so.

4 years ago ·
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Brent Wilson

Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Feeding
I fertilize Mondo Grass one time a year with a slow-release, well-balanced plant food when new growth begins to emerge in spring.

4 years ago ·
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Brent Wilson

Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Problems
I've seen no insect, pest or disease problems with Mondo Grass. In the South, exposure to the hot afternoon summer sun will fade the color of the foliage. I recommend planting in sites that provide shade or morning sun with afternoon shade.

4 years ago ·
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