How Many Plants To Order?
Use the following table to help determine how many plants you will need to cover a certain area, then use the table at the bottom of this page to figure out how many flats to order.
| On Center Spacing of Plants | |||||||||
| 4" | 6" | 8" | 10" | 12" | 15" | 18" | 24" | ||
| Coverage Area in Square Feet | 25 | 225 | 100 | 57 | 36 | 25 | 16 | 11 | 6 |
| 50 | 450 | 200 | 114 | 72 | 50 | 32 | 22 | 12 | |
| 75 | 675 | 300 | 171 | 108 | 75 | 48 | 33 | 18 | |
| 100 | 900 | 400 | 228 | 144 | 100 | 64 | 44 | 24 | |
| 150 | 1,350 | 600 | 342 | 216 | 150 | 96 | 66 | 36 | |
| 200 | 1,800 | 800 | 456 | 288 | 200 | 128 | 88 | 48 | |
| 250 | 2,250 | 1,000 | 570 | 360 | 250 | 160 | 110 | 60 | |
| 300 | 2,700 | 1,200 | 684 | 432 | 300 | 192 | 132 | 72 | |
| 350 | 3,150 | 1,400 | 798 | 504 | 350 | 224 | 154 | 84 | |
| 400 | 3,600 | 1,600 | 912 | 576 | 400 | 256 | 176 | 96 | |
| 500 | 4,500 | 2,000 | 1,140 | 720 | 500 | 320 | 220 | 120 | |
| 1,000 | 9,000 | 4,000 | 2,280 | 1,440 | 1,000 | 640 | 440 | 240 | |
| 1,500 | 13,500 | 6,000 | 3,420 | 2,160 | 1,500 | 960 | 660 | 360 | |
| 2,000 | 18,000 | 8,000 | 4,560 | 2,880 | 2,000 | 1,280 | 880 | 480 | |
| 2,500 | 22,500 | 10,000 | 5,700 | 3,600 | 2,500 | 1,600 | 1,100 | 600 | |
| 3,000 | 27,000 | 12,000 | 6,840 | 4,320 | 3,000 | 1,920 | 1,320 | 720 | |
| 3,500 | 31,500 | 14,000 | 7,980 | 5,040 | 3,500 | 2,240 | 1,540 | 840 | |
| 4,000 | 36,000 | 16,000 | 9,120 | 5,760 | 4,000 | 2,560 | 1,760 | 1,080 | |
| 4,500 | 40,500 | 18,000 | 10,260 | 6,480 | 4,500 | 2,880 | 1,980 | 1,080 | |
| 5,000 | 45,000 | 20,000 | 11,400 | 7,200 | 5,000 | 3,200 | 2,200 | 1,200 | |
| 7,500 | 67,500 | 30,000 | 17,100 | 10,800 | 7,500 | 4,800 | 3,300 | 1,800 | |
| 10,000 | 90,000 | 40,000 | 22,800 | 14,400 | 10,000 | 6,400 | 4,400 | 2,400 | |
| Spacing Multiplier | 9.0 | 4.0 | 2.28 | 1.44 | 1.0 | 0.64 | 0.44 | 0.25 | |
If you don't see your coverage area on the chart, use the following formula to calculate how many plants you will need:
(Area in sq. feet) x (Spacing Multiplier) = Number of plants needed
Finding Unknown Spacing Multiplier
On occasion, you may need a spacing multiplier that is not on our chart. Use the following formula to figure the multiplier for your situation:
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:
144/13.5² = 144/182.25 = mulitplier of 0.79
General 'Suggested Spacing' Guide
** Adjust spacing based on desired coverage time and budget **
| 2¼" & 4" pots | Liriopes | 12" |
| 4" pots | Daylilies | 12" - 18" |
| Ferns/Hostas | 12" - 24" | |
| Ivies/vines | 12" - 18" | |
| 72-cell packs | Spicata | 10" - 12" |
| Mondo | 8" - 10" | |
| One gallons | Most plants | 18" - 24" |
These are general suggestions for planting. If you want to make a greater show in your planting before your plants have had time to grow to their fullest, then you might need to add more. If you want a fast spreading plant to keep from filling in too fast, then you might want to not plant as many.
How Many Plants Are in a Flat?
Consult the table below to determine how many plants are provided in a certain number & type of flat:
| Plant size = | 4" | 2¼" | Cell Pack |
| Flats | 18 / flat | 36 / flat | 72 / flat |
| 1 | 18 | 36 | 72 |
| 2 | 36 | 72 | 144 |
| 3 | 54 | 108 | 216 |
| 4 | 72 | 144 | 288 |
| 5 | 90 | 180 | 360 |
| 6 | 108 | 216 | 432 |
| 7 | 123 | 252 | 504 |
| 8 | 144 | 288 | 576 |
| 9 | 162 | 324 | 648 |
| 10 | 180 | 360 | 720 |
| 11 | 198 | 396 | 792 |
| 12 | 216 | 432 | 864 |
| 13 | 234 | 468 | 936 |
| 14 | 234 | 468 | 936 |
| 15 | 270 | 540 | 1080 |
| 16 | 288 | 576 | 1152 |
| 17 | 306 | 612 | 1224 |
| 18 | 324 | 648 | 1296 |
| 19 | 342 | 684 | 1368 |
| 20 | 360 | 720 | 1440 |
| 25 | 450 | 900 | 1800 |
| 30 | 540 | 1080 | 2160 |
| 35 | 630 | 1260 | 2520 |
| 40 | 720 | 1440 | 2880 |
| 45 | 810 | 1620 | 3240 |
| 50 | 900 | 1800 | 3600 |
| 55 | 990 | 1980 | 3960 |
| 60 | 1080 | 2160 | 4320 |
| 65 | 1170 | 2340 | 4680 |
| 70 | 1260 | 2520 | 5040 |
| 75 | 1350 | 2700 | 5400 |
| 80 | 1440 | 2880 | 5760 |
| 85 | 1530 | 3060 | 6120 |
| 90 | 1620 | 3240 | 6480 |
| 95 | 1710 | 3420 | 6840 |
| 100 | 1800 | 3600 | 7200 |