How to use the plant calculator:
Determine the width and length of the area you want to cover with plants or the total square footage.
Decide on the spacing between the plants. Note that this is the spacing between the centers of the plants.
The plant spacing calculator will tell you how many plants you need in a rectangular and a triangular grid.
Notice that you can also use the plant spacing calculator to find the spacing. For example, if you want to plant x number of plants in a particular space. The plant calculator will tell you the spacing you will need to use.