Pinus edulis

Uncertain, that is to say seeds that could be orthodox, intermediate or recalcitrant. This information is still unknown for the moment. These seeds are very similar to those of the Singleleaf Pinyon, but unlike the latter, they seem to store a little better. Still, although most pine seeds are orthodox and store admirably well, we do not recommend medium or long term storage of these seeds, as we consider them more to be intermediate. After two years, they may have lost their viability. Note that these seeds can be stored in the freezer; it may even be preferable.

For germination, you must...

1. allow ONE MONTH for seed treatment;
2. subject them to a scarification AND a cold stratification before sowing (follow the steps below in order).

Scarification : Soak the seeds (pinyons) in water at room temperature for 24 hours.
Stratification (cold) : Place the seeds (pinyons) in a bag (Ziploc Slider type) containing slightly premoistened peat moss. Seeds should be surrounded by the latter. Close the bag and place it in cool storage (between 1°C and 5°C) for approximately one month.
Seedlings : Remove the content from the bag and sow the seeds (pinyons) one by one and bury lightly, less than five millimeters from the soil surface. Be patient... not with germination, but with the speed of growth of the seedlings which is extremely slow.