This isn't off-topic for the rose forums, because the context is a garden whose "back bone" IS roses.
Let us remember the conditions of my garden, so you can understand the context. My garden is in a woodland,a 20 minute drive from my home. There is no running water, no house. It's very, very big-way too much for one middle-aged woman to care for by herself, yet that's what I do. I've been working on it for about 20 years now,and slowly it is shaping up -I started from scratch; my the area of my property in which I made the garden was very badly eroded and neglected.
It's so big, so only a pretty limited area of said garden is dedicated to growing floribundas and roses of that sort-the rest of it is given over to vigorous climbers and shrubs and ramblers. Every year I spend a lot of time and energy clearing out giant weeds,some of which grow in very difficult-to reach areas, where one can't mow or weed-whack,and I want to cultivate these areas with weed-smothering ground covers which will only require a minimum of attention.
I pretty much know that this could work-way back when I was just starting, I planted vincas in two areas, and they have by now created a thick,vast mat. Since I didn't know what I was doing, I didn't weed-proof these ares before planting, so some weeds DO grow through, but this area is still so much easier to cope with than the areas without the vinca. So I would like to fill in other areas with some kind of fast-growing, weed-smothering ground cover. The areas in question are between very large, well-established roses that only require attention once or twice a year, at most (Clbg. Old Blush, Purple Skyliner, Rosengarten Zweibrucken, a large ceanothus, etc). I just weeded put down cardboard to prepare the soil for next fall , which is planting season here in Tuscany, Italy. Of course I could just keep using vincas, but I do enjoy experimenting and learning new things, so I was hoping that some of you might have some interesting suggestions. I'm looking for something that's evergreen, because here in Italy a lot of weeds can grow even in winter. Thanks in advance!