Can you transplant monkey grass in the winter?
Unless absolutely necessary, I would not recommend it. Wait until spring to transplant monkey grass.
When visiting in NJ I fell in love with monkey grass as a low border and would love to grow it. Is it hardy enough for our cold winters?
Monkey grass is hardy to zone 6. If you live in a zone lower than 6, it will not survive in normal parts of your yard. That being said, if you are in zone 5, you may have or be able to create a microclimate in your yard that can bump a small section of your garden up to a zone 6. This article will explain more about creating micro climates:
When is the time for cutting back liriope in northeast Louisiana?
This article will help you with liriope pruning: https://www.gardeningknowhow.com/ornamental/groundcover/monkey-grass/pruning-monkey-grass.htm
I live in deep south Texas, and my patio does not get any direct sunlight. The area gets water three times weekly from the sprinkler system, and also receives run off water when hanging baskets and other pot plants receive water. Therefore, it stays fairly wet. The grass does not grow next to the patio and I want to plant some sort of ground cover, was thinking about monkey grass. Is there something else that would be better?
Monkey grass needs a good bit of light, so if it is a somewhat shady area, it might not do well. Any of the plants in this article would work well: https://www.gardeningknowhow.com/special/shade/ground-covers-for-shade.htm
Is there an easy way to trim monkey grass?
If it is a large area, some people will set their lawn mower to the highest setting and will use a lawn mower. A weed wacker will work too, but it will look a bit ragged for a bit while it regrows.
I have the low growing, spreading monkey grass in Houston, Texas and am wondering what would be a good fertilizer for it. I've had it in place for over twenty years and have never fed it.
Monkey grass typically does not require any fertilizer, and in some cases, can even get out of control. To learn more about this plant, this article should help you:
I have Monkey grass with St Augustine grass growing in it. Is there something I can spray on the area that will kill the St Augustine grass but not the Monkey grass?
Monkey grass should not be affected by grass specific herbicides, like Grass B Gon. They are designs to harm lawn and weed grasses rather than ornamental grasses. Just to be safe though, test on a small area before spraying the whole area.