Why grow your own lawn (or Easter Grass), when you can simply print it?
Here's a collection of different sizes of grass tiles, which are easy to print and can be cut to length (60mm full length. Can be scaled longer, but only in the direction on the strands!!).
New updated size, 75x75mm double density tile, pictured with the boat from Monopoly.
As with any "hairy" print, these are printed sideways, and then one of the plates is cut free. The parts should be oriented so, that each strand starts printing from the top of the grass and ends on the root (Cura changes this when you rotate the block 180 degrees on the Z axis).This way you get a nice effect, where the grass is thinner on the top, and adheres better to the bottom plate. You can choose, if you want to have a thick bottom plate or the thin one, by simply orienting the parts accordingly and cutting the opposite plate off.
Check out my other designs here: https://www.thingiverse.com/Superbeasti/designs
Please note the layer height should be set so, that there's only one extrusion per strand( 0.2 as default). Print speed and cooling should be set high enough to avoid the strands to sag too much. The examples were printed with 60mm/s.
Use of a raft is highly recommended!