All seed is sown by seedlot, and each different lot is immediately labeled with some sort of marker that contains all pertinent information. The location of all seedlots is also permanently mapped in case the markers are lost. The identity of each seedlot is carefully maintained during the entire nursery operation to make sure that the seedlings are returned to the environment to which they are adapted. In the Western States, some nurseries sow literally hundreds of different seedlots each year that reflect the many diverse environments in that mountainous terrain.
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