Collecting Pollen for Future Crosses
There comes a moment in the garden when a flower opens, bright as a tiny lantern, and seems to say, Now, now, now—if you want me, now. That is the trouble with pollen. It keeps the flower’s own clock. So when one Mestoklema is blooming and another possible parent is still sitting stubbornly green and silent, I collect what I can and save it for another day. With a clean, dry tool, I gently gather the pollen from the open flowers and place it into a small labeled vial. But there is one rule above all others: No wet pollen. No damp vial. No tiny swamp in a bottle.
Moisture is the enemy here. Pollen collected after rain, misting, heavy dew, or while the flowers themselves are damp can lose viability more quickly. Worse, trapping moisture inside a sealed vial creates the sort of little enclosed world that mold and microbes find quite agreeable. And what is agreeable to mold is generally disagreeable to a breeding program. So the pollen must be dry before it is sealed away.
Once collected, I give it time to dry under clean conditions, then label the container with the plant name and collection date. That tiny label may seem unimportant now, but months later it becomes the difference between knowing what you crossed and merely having an interesting mystery.
For short-term storage, the sealed pollen can be kept refrigerated. For longer storage, freezing may extend its useful life, although pollen behaves differently from species to species. There is no promise that every grain placed into cold storage will awaken months later ready for duty. That uncertainty is part of the experiment.
Dryness remains important even in storage. A desiccant can help keep the surrounding storage environment dry, provided the pollen itself is protected and kept clean. Then comes one of the easiest mistakes to make. When I remove a vial from the refrigerator or freezer, I do not open it immediately. A cold vial opened into warm air can gather condensation almost at once. Suddenly the carefully dried pollen meets water again—the very thing all this trouble was meant to avoid. Instead, I leave the vial sealed until it reaches room temperature.
Only then do I open it. Someday, perhaps, another Mestoklema will flower at just the right moment. Then this little vial will come back out, the stored pollen will meet a receptive stigma, and the experiment will begin again. Perhaps nothing will happen. Perhaps a capsule will form. Perhaps there will be seed. And perhaps one of those seeds will grow into something neither parent has ever been before. That is the strange scale of plant breeding: a future plant, a future generation, an entire possibility—waiting quietly in a speck of dust.
