Bald tires and slicks aren't the same. You can use bald tires until they go but your traction on bald tires will be considerably worse than slicks.

For grass, something with deep pins/lugs will work better. Something like proline badlands.

A medium compound is a good mix of durability and traction.

No great dirt / grass tire I know of that won't get worn down quickly on asphalt.