MG will not do well in full sun, must be kept moist and does not hold up well to traffic.

Ground cover under oaks? OMG - something I know about; how did I miss it? Oh yeah, I was sick then ... drrrr We had an absolutely lovely green ground cover that took years to look so great; sadly it was mostly torn up when the drain field was redone. It was a combination of dwarf mondo grass, jasmine and sedge grass. It is all slowly making its way back. And yes, I dig up weeds and transplant them around my yard. The neighbor must have planted a mondo grass border 30 years ago and it has slowly spread its way around. It does spread, slowly, and always looks good. Holds up well to traffic and to mowing. We also have a summer ground cover that is some type of green mini wandering jew looking plant that is not a wandering jew. It does exceptionally well under the oaks and bears traffic well but dies back when the rains stop. I can't get the mimosa to spread under our oaks; but I keep trying. ~Dianne After hand digging out an acre of common boston fern; I hate ferns in the ground.

More than likely they yellowed because of lack of water, since foot traffic can disturbe soil structure. Do not aerate. A general fertilizer from Wal Mart will be fine. No need to cut back. I have raised it for years and unlike liriope it does need trimming back. Throw some manure or compost around so when spring rains come it should wash through. Here is a link that might be useful: Propagating Perennials.

In 2020 there are several weed control products labled for use on Mondo Grass. Since Mondo Grass isn't a grass, it's a member of the lilly family, the weed control products made for use on it may not control the specific weed or grass you need it to. Read lables carefully to make sure they will control what you want and not kill something you don't intend too. As example I still haven't found one that will control Bermudagrass in Mondo Grass or one that is labeled for use on Mondo Grass and won't kill Fescue and Kentucky Bluegrass. The three products I've been able to find, thus far, that are labled for use in Mondo Grass are Image Kills Nutsedge, Envoy and Vantage. Again, check the lables to make certain you get the correct product for your circumstances. Lables are available online so you don't have to stand in the store reading tiny print.