Sorry, just missed your last post.
Yes, use the primitive square cloth plane would be fine.
There are more options but.

Turn it upside down.
Let the grass grow downwards. Using normal gravity.

Experiment with the length and lenght variations, and with tip and rooth thickness untill you are satisfied with your grass sim.

then save this as you would normal dynamic hair.
Save the plane and the grown grass in the library as you normally would.

Load your grass prop and turn it upside down. => Right side up again. It is just a prop now. The grass will stand upward.

You now have a prop with long grass.
Set plane color to sand color and the grass color variation from tip to rooth.

This grass, (that handles like any other prop) can now be manupulated with magnets and or morphing tool if you need it to be.

Depending on what you exactly want => Think outside of the box !

A screengrab of what you want would tell a 1000 words.

Happy Posering.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!