Operational Time Requirements
The following are general guidelines for field conditioning, Tree Seed Centre conditioning, cone and seed processing, testing and preparation for sowing.
Clients may request that seedlots be processed on a priority basis if the seedlot must be immediately available for seedling production, or if there are concerns with pre-germination or insect activity. These timelines are average requirements, but the Tree Seed Centre is constantly faced with meeting the unique timelines of its clients.
- Please see the priority processing section for further details.
Guide to Tree Seed Centre Operational Time Requirements
|Estimated Time under Average Crop Conditions (in weeks)||Sowing pre-treatment**|
|Common name||Species Code||Field conditioning (prior to shipping*)||Extraction and processing||Registration and storage||Testing||Soak (hrs)||Method||Time (wks)|
|Western redcedar||Cw||0-1||2||1||3||0||pellet coated||4|
|Western hemlock||Hw||0-1||2||1||8||24||chilling at 2>-5°C||4|
|Western larch||Lw||2-4||3||1||6||24||chilling at 2>-5°C||3|
|Douglas-fir||Fdc/Fdi||2-4||3||1||6||24||chilling at 2>-5°C||3|
|Spruce species||Sx/Sxs/Ss||2-4||3||1||6||24||chilling at 2>-5°C||3|
|Lodgepole pine||Plc/Pli||0||2||1||7||24||chilling at 2>-5°C||4|
|Mountain hemlock||Hm||2-4||3||1||8||24||chilling at 2>-5°C||4|
|Ponderosa pine||Py||2-4||3||1||7||24||chilling at 2>-5°C||4|
|Western white pine||Pw||2-4||4||1||20||336||14 wks at 2>-5°C||16|
|Yellow cedar||Yc||0-1||3||1||16||72||4 wks at 20°C + 11 wks at 2>-5°C||15|
|Grand fir||Bg||4||4||1||8||48||chilling at 2>-5°C||4|
|Pacific silver fir||Ba||4||4||1||16||48||strat/redry 4 + 8 wks||12|
|Sub-alpine fir||Bl||4||4||1||16||48||strat/redry 4 + 8 wks||12|
|Noble fir||Bp||4||4||1||16||48||strat/redry 4 + 8 wks||12|
* Transport Notice: Contact the Tree Seed Centre, Surrey at 778-609-2005 to arrange a date for cones and/or seed to arrive. This date will vary depending upon crop year, available storage space at the TSC and the condition of your cones. The Tree Seed Centre will make all efforts to expedite your shipment, but please make all efforts to notify us in a timely manner - the earlier the better.