| StockType | Other Names | Min/Avg Caliper | Min/Avg Height | Bag/Box Count | Usage Recommendations |
|---|
| Bareroot: | 1+0 | | 6mm min
9-10mm avg | 16" min
30-36" avg | 160 (RA)
320 (PP) | Recommended for red alder, as well as for ponderosa pine on hot-harsh sites & shallow soils. |
|---|
|
1+1 'standard' |
|
6mm min
8mm avg |
12" min
18-20" avg |
120-160 |
Best overall value for survival and growth in larger-seeded species
(Douglas-fir, pine, true firs) under normal conditions. Moppy fibrous
root system, good caliper and branching – good survival across wide
range of stock types. |
|
1+1 7mm |
'low density' 1+1 |
7mm min
9mm avg |
14" min
22-24" avg |
80-120 |
Larger caliper, better root-shoot balance than standard 1+1.
Recommended for sites with heavy browse pressure combined with desire
for rapid greenup. Height may be a limitation on windy sites.
|
|
2+0 |
|
4mm min
6mm avg |
8" min
18-24" avg |
320 |
Tall, slender tree with sparse branching and coarse roots. Lower
cost but lower survival and growth through age 3 than 1+1 unless planted
on low-stress sites with minimum vegetation and animal competition. |
|
2+1 |
|
7mm min
9mm avg |
14" min
24" avg |
100-120 |
Large, very woody - hardy tree with moppy fibrous root system –suited
to sites with heavy animal browse combined with need for accelerated
greenup. In Douglas-fir, root-shoot balance may not be as good as the
1+1, and height may be a problem on windy sites. |
|
P+1 |
Spring plug+1 |
7mm min
8mm avg |
12" min
18-20" avg |
140-160 |
Large bareroot tree with moppy fibrous root system, good caliper and
branching. More expensive than 1+1, but best bareroot option for
small-seeded species (hemlock, W. redcedar). |
|
FP+1 |
Fall plug+1 |
6mm min
10mm avg |
14" min
24-28" avg |
80-120 |
Very large bareroot tree with moppy fibrous root system, excellent
root-shoot balance. More expensive than 1+1. Recommended
for D.f. only, and would be superior to 1+1 7mm only on sites with heavy
animal browse combined with desire for rapid greenup. Height may be a
limitation on windy sites. |
| | | | | | |
| Container: | Styro 6 | 410, 415B | 2.5mm min
3-4mm avg | 6" min
8" avg | 200/box or bag | Small economical plug, suboptimum for Douglas-fir, hemlock or cedar
growth but well suited for true firs on high elevation sites.
|
|---|
|
Styro 8 |
415C |
3mm min
4mm avg |
6" min
8-9" avg |
180/box or bag |
Smaller, slower-growing tree than S10 and S15 but well suited to
steep, harsh sites with shallow soils where bareroot survival may be
poor and also where terrain and soil depth make a smaller plug
economical to transport and plant. Very good for tubed applications
where elk pulling or rodent/mountain beaver damage are significant. |
|
Styro 10 |
412A, 415D |
3mm min
4.5mm avg |
7" min
9-10" avg |
180/box or bag |
Intermediate between S8 and S15 in height, caliper and plug volume
and expected growth as well as cost; very good for steep or tubed
applications. |
|
Styro 15 |
512A, 515A |
3.5mm min
5mm avg |
8" min
10-12" avg |
108-120/ box or bag |
Mid-sized outplant container with good root growth in first spring,
and more consistent survival and first-year growth than 1+1 bareroot,
particularly on more stressful sites. Slower growing than the styro-20
but growth comparable to and survival better than the 1+1. Excellent
balance of performance and cost for D.f., hemlock and WRCedar (may
require tubing if heavy browse is expected). |
|
Styro 20 |
615A 'winter sow' (1
yr old) |
4mm min
5mm avg |
10" min
12-14" avg |
90/box or bag |
Large outplant container with survival and early growth usually
better than 1+1 bareroot, particularly on stressful sites. Best value
for situations where rapid greenup is a primary objective (WRCedar, D.f.)
- may require tubing if heavy browse is expected. |
|
Styro 20 'schedule 2' |
615A 'summer sow' (2
yrs old) |
5mm
5-6mm avg |
10" min
14-16" avg |
90/box or bag |
Plug volume same as styro 20 winter-sow but larger caliper and
height, and hardier - woodier. Recom-mended for situations where rapid
greenup is a key objective. The extra size and woodiness offers greater
resilience to animal browse. |
|
Late-summer/fall outplant (recommend S10-15) |
|
See S10-S15 above |
|
120-180/ box or bag |
Recommended for high elevation units with late snow preventing
planting until late May or June and good soil moisture and moderate
temperatures during Aug-Sept; or for coastal sites with good soil
moisture and moderate temperatures during Aug-Sept. Should be done
before end of Sept for maximum root growth benefits. Requires
dark-out treatment – but trees having received darkout may show poor
root growth if stored and planted in the spring. |
