How to Grow Black Mondo Grass

Gardeners love black mondo grass, Ophiopogon planiscapus 'Nigrescens," for its shiny, nearly black foliage. Its strappy leaves arch gracefully near the ground -- black mondo grass grows about 6 inches high and spreads slowly, eventually forming a dense groundcover. One of the few plants with such dark foliage, black mondo grass is stunnning whether planted en masse or as an accent. Black mondo grass is hardy in U.S. Department of Agriculture zones 6 to 9; it will stay evergreen during mild winters. Take some simple steps to keep your black mondo grass growing vigorously and looking good.

Shovel
Compost or other organic matter
Slow-release fertilizer

Instructions

- 1
  Plant your black mondo grass in a spot that has good drainage and full sun to part shade; in warmer climates, it may prefer full shade.
- 2
  Dig a hole about twice the size of the root ball. Amend the soil with organic matter, such as compost. Mix a slow-release fertilizer into the soil.
- 3
  Remove the plant from the nursery container. Place it in the hole at the same depth it was growing in the pot.
- 4
  Keep the soil moist -- not wet -- until roots are established. Black mondo grass requires only occasional watering once it is established.
- 5
  Cut back any dead or damaged leaves. Shear ragged-looking plants lightly in early spring before they put on new growth. Divide your black mondo grass in the fall or late winter if the clumps get too large. Space the divisions 6 to 8 inches apart when you replant them.

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