Plant Calculation Chart
To figure the number of plants required for a given area, multiply the number of square feet by the number of plants per square foot using this table:
On 6" centers - plants per sq. ft. = 4
On 8" centers - plants per sq. ft. = 2.25
On 9" centers - plants per sq. ft. = 1.77
On 10" centers - plants per sq. ft. = 1.44
On 12" centers - plants per sq. ft. = 1
On 18" centers - plants per sq. ft. = .44
On 24" centers - plants per sq. ft. = .25