The only ferts my grasses get is an occasional bit of compost tea, very dilute. Apart from that, they get nutrients from decomposing mulch and that's it. Ornamental grasses really don't benefit from overly fertile soil, and can get too floppy if there's too much nutrient. I remember reading, on this forum, someone's experience with lawn ferts and A. donax, and I believe it was a positive one. I've never grown it, so I can't speak to it's need for ferts. I wouldn't put any Weed-n-Feed type stuff anywhere near any ornamental grasses, but I don't use any of it anyway. I'm trying to get rid of lawn, not encourage it.

I assume the house on Google maps is yours and not the house with OG lawn, as all I saw was standard lawn grass/turf. If you could provide a photo of the house in question, we might be able to ID the grass for you. Otherwise, I'd look into a couple of sedges that might do the trick: Carex leavenworthii Carex praealtis Carex divulsa Carex flacca You will probably need to mail order these and not sure if available by seeds or starts. Some OG's are just very difficult to obtain seeds for for any number of reasons.

It's a yuck get rid of

2 yrs ago I found a variegated grass called Hello Spring! It's a narrow feather reed grass, about 3-4' when mature but it's only in it's second yr here. BUT it is super early to green up and get going...I was thrilled! Early April it started. This is April 22. I'm in zone 6b, coastal MA. This was towards the end of May. It's behind the Walkers Low Catmint...about 2' tall. It's over 3' now and all plumed out. I don't have a pix of it right now but I could take one.