Plant Estimating Chart

Example: if you select 18" spacing and need to cover 300 square feet, the box where that column and row intersect tells you that you need 133 plants.

Plant Calculator

Use the plant calculator below to determine how many plants to use per square foot of space to be planted - particularly groundcovers, annuals and perennials.

To accurately use chart you must first know how far to properly space the type of plant you are planting.

Example: you want to cover an area of 120 square feet with a spacing of 10". For 10" spacing the plants per square foot is 1.45. Multiply 1.45 x 120 and you get 174 plants needed.

(Area in square feet) x (Plants per Square Foot) = Number of plants needed

Formulas for figuring square feet

Squares and rectangles - Length x width

Circle - 3.14 x radius squared - (Radius is distance from center of circle to perimeter / or half the distance of the diameter) (Radius squared is radius x 2)