Plant Calculator

How Many Plants Do You Need?

		On Center Spacing of Plants
		8"	10"	12"	15"	18"	24"
Coverage Area in Square Feet	25	57	36	25	16	11	6
	50	114	72	50	32	22	12
	75	171	108	75	48	33	18
	100	228	144	100	64	44	24
	150	342	216	150	96	66	36
	200	456	288	200	128	88	48
	Spacing Multiplier	2.28	1.44	1.0	0.64	0.44	0.25

For other size areas, use the following formula to calculate how many plants you will need:

 (Area in sq. feet) x (Spacing Multiplier) = Number of plants needed

(Area is 2 feet by 25 feet = 50 sq. feet) x  (Spacing 12 inches apart Spacing Multiplier is 1.0 ) = 50 is the number of plants needed

Finding Unknown Spacing Multiplier

For other spacing requirements, use the following formula to figure your multiplier:

Multiplier = 144/X2 where X = the spacing distance in inches you need 

Example: If you need a spacing of 13.5 inches, your multiplier would be:

144
=
144
=
0.79
13.52
 
182.25
 
multiple