C04c_Minimum Cone Collecting Criteria by Species_1284LM26Q0079.pdf
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Department of Agriculture Forest Service
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This document is an exhibit from the Forest Service Handbook (FSH 2409.26F) that establishes minimum cone collecting criteria for seed collection operations across multiple coniferous tree species.
The attachment specifies minimum collection standards for 24 tree species, organized by species code, common name, and scientific name. Key collection parameters include: minimum number or percentage of filled sound seeds per cut face (ranging from 2 to 12 seeds or 50 percent); minimum pickable cones per tree (varying from 30 to 10,000 cones depending on species); and average dates when cones reach full size (primarily August dates, with some variation between east and west of the Continental Divide). Species covered include various pines (ponderosa, lodgepole, sugar, western white, whitebark), spruces (Engelmann, blue), firs (California red, Douglas), cedars (incense, western red), hemlocks (western, mountain), and larch (western). The document includes three footnotes noting that minimum amounts should be adjusted upward 2-3 seeds or 5-10 percent during good seed years with above-average yields, and reduced 1-3 seeds or 10-15 percent when seed reserves are critically low. It also notes that absence of quantitative data indicates unavailable information, and clarifies geographic distinctions for species with two different maturation dates based on location relative to the Continental Divide.
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Attachment #05 - Minimum Cone Collecting Criteria, by Species
FSH 2409.26F - Seed Handbook Exhibit Chapter 600 – Cone and Seed Collection and Handling
Minimum Cone Collecting Criteria
Species Species
Common Name Species Code
Minimum Number (or %) of Filled Sound Seeds Per cut Face[1]
[2]
Minimum Pickable Cones per Tree
Average Date Cones Full Size[3]
Abies magnifica California red fir
ABMA 12
Calocedrus decurrens
Incense cedar CADE27 50%, or 2 10,000 August
Larix occidentalis Western larch LAOC 2 200 Aug 6
Picea engelmannii Engelmann spruce
PIEN 7 600 Aug 17-Aug
Picea pungens Blue spruce PIPU 7 200
Pinus aristata Bristlecone pine PIAR 5
Pinus albicaulis Whitebark pine PIAL 10 60 Aug 30
Pinus contorta Lodgepole pine PICO 5 1000 Aug 19-Aug
Pinus flexilis Limber pine PIFL2 10 100 Aug 30
Pinus jeffreyii Jeffrey pine PIJE 7 50 Aug 22-Aug
Pinus lambertiana Sugar pine PILA 12 30
Pinus longaeva Great Basin bristlecone pine
PILO 5
Pinus edulis Pinyon pine PIED 5
Pinus monticola Western white pine
PIMO3 10 100 Aug 1-Aug
Pinus ponderosa Ponderosa pine PIPO 7 100 Aug 22-Aug
Pinus ponderosa subsp. washoensis
Washoe pine PIPOW2 7 100 Aug 22-Aug
Pinus strobiformis Southwestern white pine
PIST3 10 100 Aug 30 https://gbc-word-edit.officeapps.live.com/we/wordeditorframe.aspx?ui=en%2DUS&rs=en%2DUS&wopisrc=https%3A%2F%2Fusdagcc.sharepoint.com%2Fsites%2Ffs-r01-vsc%2F_vti_bin%2Fwopi.ashx%2Ffiles%2F47a9ec9046a7444c86b657390015c164&wdenableroaming=1&mscc=1&hid=293C9DA0-B005-3000-4131-3ACE442E0FDD&wdorigin=ItemsView&wdhostclicktime=1678285060082&jsapi=1&jsapiver=v1&newsession=1&corrid=57a0edef-eb31-4f42-ae1a-fad341ad5151&usid=57a0edef-eb31-4f42-ae1a-fad341ad5151&sftc=1&cac=1&mtf=1&sfp=1&instantedit=1&wopicomplete=1&wdredirectionreason=Unified_SingleFlush&rct=Normal&ctp=LeastProtected#_ftn1 https://gbc-word-edit.officeapps.live.com/we/wordeditorframe.aspx?ui=en%2DUS&rs=en%2DUS&wopisrc=https%3A%2F%2Fusdagcc.sharepoint.com%2Fsites%2Ffs-r01-vsc%2F_vti_bin%2Fwopi.ashx%2Ffiles%2F47a9ec9046a7444c86b657390015c164&wdenableroaming=1&mscc=1&hid=293C9DA0-B005-3000-4131-3ACE442E0FDD&wdorigin=ItemsView&wdhostclicktime=1678285060082&jsapi=1&jsapiver=v1&newsession=1&corrid=57a0edef-eb31-4f42-ae1a-fad341ad5151&usid=57a0edef-eb31-4f42-ae1a-fad341ad5151&sftc=1&cac=1&mtf=1&sfp=1&instantedit=1&wopicomplete=1&wdredirectionreason=Unified_SingleFlush&rct=Normal&ctp=LeastProtected#_ftn2 https://gbc-word-edit.officeapps.live.com/we/wordeditorframe.aspx?ui=en%2DUS&rs=en%2DUS&wopisrc=https%3A%2F%2Fusdagcc.sharepoint.com%2Fsites%2Ffs-r01-vsc%2F_vti_bin%2Fwopi.ashx%2Ffiles%2F47a9ec9046a7444c86b657390015c164&wdenableroaming=1&mscc=1&hid=293C9DA0-B005-3000-4131-3ACE442E0FDD&wdorigin=ItemsView&wdhostclicktime=1678285060082&jsapi=1&jsapiver=v1&newsession=1&corrid=57a0edef-eb31-4f42-ae1a-fad341ad5151&usid=57a0edef-eb31-4f42-ae1a-fad341ad5151&sftc=1&cac=1&mtf=1&sfp=1&instantedit=1&wopicomplete=1&wdredirectionreason=Unified_SingleFlush&rct=Normal&ctp=LeastProtected#_ftn4
Species Species
Common Name Species Code
Minimum Number (or %) of Filled Sound Seeds Per cut Face[1]
[2]
Minimum Pickable Cones per Tree
Average Date Cones Full Size[3]
Pseudotsuga menziesii
Douglas-fir PSME 5 500 Aug 13-Aug
Thuja plicata Western red cedar
THPL 2 Aug 15
Tsuga heterophylla Western hemlock
TSHE 3 Aug 6
Tsuga mertensiana Mountain hemlock
TSME 3
[1] These minimum amounts should be raised 2-3 per cut face or 5-10 percent in a good seed year when yield is above average. When seed reserves are very low, minimums can be reduced 1-3 per cut face or 10-15 percent.
[2] Absence of quantitative data in the above tables indicates no data are currently available.
[3] For species with two average dates for cones at full size, the first is for east of the Continental Divide and the second if for west of the Continental Divide.
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Attachment #013 - Minimum Cone Collecting Criteria, by Species
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