Minnesota State Forest Nursery

The following table will help you determine the number of trees needed, per acre, based upon tree spacing.

 

Spacing (feet)

Tree (number)

Spacing (feet)

Tree (number)

Spacing (feet)

Tree (number)

2x2

1,890

7x9

691

12x15

242

3x3

4,840

7x10

622

12x18

202

4x4

2,722

7x12

519

12x20

182

4x5

2,178

7x15

415

12x25

145

4x6

1,815

8x8

681

13x13

258

4x7

1,556

8x9

605

13x15

223

4x8

1,361

8x10

544

13x20

168

4x9

1,210

8x12

454

13x25

134

4x10

1,089

8x15

363

14x14

222

5x5

1,742

8x25

218

14x15

207

5x6

1,452

9x9

538

14x20

156

5x7

1,245

9x10

484

14x25

124

5x8

1,089

9x12

403

15x15

194

5x9

968

9x15

323

15x20

145

5x10

871

10x10

436

15x25

116

6x6

1,210

10x12

363

16x16

170

6x7

1,037

10x15

290

16x20

136

6x8

908

10x18

242

16x25

109

6x9

807

11x11

360

18x18

134

6x10

726

11x12

330

18x20

121

6x12

605

11x15

264

18x25

97

6x15

484

11x20

198

20x20

109

7x7

889

11x15

158

20x25

87

7x8

778

12x12

302

25x25

70

 

Each tree species is different in its need for sunlight, moisture, and soil type. Different trees grow at different rates. Some mature in 40 years, others take a hundred. Ask a forestry professional if you have questions about which trees to plant on a given site. Find your local forestry office.