Answer: It sounds as though the the plants need to be dug and replanted and soil needs to be amended. This will help with drainage (sounds as though the roots are suffocating - perhaps from saturated soils?). All forms of monkey grass can be easily lifted and divided whenever needed. The yellow foliage should be removed when you dig the plants and the brownish foliage of monkey grass should be cut back prior to new growth, usually in late February or early March. Cutting back this foliage not only promotes new growth but also helps to rejuvenate the plants. After digging, spread 2-3" of compost over the bed and dig it in. Then groom your plants and replant in the freshly amended soil. Water well and watch them grow!
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