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Stocktypes and sizes

We grow a wide variety of container-grown stocktypes and sizes. The majority of our crops are custom grown to customer specifications.

Container Growing System

Type

Description

PSB

Our most popular container seedling – Plug Styroblock

PCT

Copper-pruned seedling – Plug copper treatedShort form: PCT
Container seedling grown in a styroblock which is coated with a copper-containing compound that affects the way the roots develop. Chemical root pruning.

CRC

Produced from a cutting – Container rooted cutting

SSM

Tree started from a somatic embryo

MPT

Mini-plug transplantShort form: MPT
Second phase for miniature plug transplanted to a larger container for growth completion.
– Second phase

Sizes Available

The size designation in our Styroblock system indicates the approximate dimensions of the seedling root plug. For example, a 410 is 4 cm (1.5 inches) in diameter at the top of the plug, and 10 cm (4 inches) deep. Similarly, a 615 is 6 cm (2.4 inches) across the top of the plug, and 15 cm deep.

Styroblock System

Metric

size

US

size

Cavities

per sq ft

Cavity

volume (mls)

Trees per

carton

Trees per

bundle

207A

 

192.3

18

100

40

208

 

102.9

30

750

25

211

Styro 2A

102.9

40

750

25

209

 

92.0

40

360

20

311

 

84.9

55

440

20

312

 

84.9

50

600

25

313A

Styro 4A

84.9

60

400

20

309

 

77.1

60

500

20

313C

 

77.1

70

360

20

310B

Styro 4S

68.6

60

360

20

313B

Styro 4

68.6

65

360

20

315B

Styro 5.5

68.6

90

360

20

411

 

61.7

90

320

20 

411B

 

63.5

80

315

15

 

Metric

size

US

size

Cavities

per sq ft

Cavity

volume (mls)

Trees per

carton

Trees per

bundle

313D

 

61.7

95

320

20

410

Styro 6S

48.0

80

270

15

415B

Styro 6

48.0

105

270

15

415C

Styro 8L

39.0

130

210

10

412A

Styro 10S

33.0

125

210

10

412B

 

49.4

95

270

15

415D

Styro 10

33.0

170

210

10

512A

Styro 15S

25.7

220

120

10

515A

Styro 15

25.7

250

120

10

615A

Styro 20

19.3

340

80

5

615B

 

12.0

340

80

5

623A

Styro 30

12.0

500

80

5

723A

Styro 45

8.6

700

50

2

1015A

Styro 60

6.4

1000

30

1

8/3000

Gallon

3.5

3000

8

1

 

Seedling Growing Cycle

AgeThe crop production cycle used to produce tree seedlings, expressed in growing seasons in the same location and growing medium. The first number represents the growing seasons in the first location and the second number the growing season in a second location; e.g. 1+0, one season in one location and growing medium; 2+0, two seasons in one location and growing medium; 0.5+1.5 = a half or partial growing season in one location and growing medium, and then a half or partial season plus another full growing season in a second location.

Description

0+0.5

Second phase of transplant, growing for roughly half a season

0+1.5

Second phase of transplant, growing for roughly 1.5 seasons

0.5+0

Base stock phase for transplant growing

1+0

Crops grown in a container for one season

2+0

Crops grown in a container for two seasons