[quote=symplastless;809768]
Like the ones you buy at the garden centers at the big box stores. Will
just a regular grass fertilizer work? Thanks.

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I have also never fed ornamental grasses. I've grown them on heavy clay (and added grit to the planting hole), on very light sandy soil and in pots. They are drought tolerant. They need lifting and dividing occasionally and some will spread if not checked, but most are extremely easy