I bought 4 10 by 25 foot rolls of 4 mill black plastic to start my tomatoes! I rolled the plastic out 25 feet long but left it folded. I got the scissors and cut a semi circle in the fold of the plastic. Actually ther are 4 folds 3 on one side and one on the other side. I cut them about every15 inches! When I rolled out the full 25 by 10 foot sheet all the holes were lined up with about 120 holes. I threw dirt along the outside borders to hold it in place and stretched it!
Now I am ready for my method of funnel shapped holes and it worked perfect with the funnel hole the same size as the hole and a foot or more deep! You can make the funnel bigger just by angling the pipe or stick you use as you spin it in a circle! I used a walking cane for awhile till it broke then I went to the tapered table metal leg that I used before! In 15 minutes I planted 3 dozen tomatoes! I will also add some pine or leaf mulch around the tomato! where the hole is in the plastic. There are tons of weeds in this new garden area.! My neighbor had this garden for 30 years and died so they let me use the area to keep it up.
It is a great garden area with black rich soil like I alwaya wanted ! Three apple trees on the border and 20 foot of grass yard on both sides a real garden paradise!. The area I have to plant is 30 by about 60 a nice big garden. I am planting everything using black plastic in this garden except some corn that I will plant in rows!