Pollinate Stenocereus Thurberi with frozen pollen

I freeze the pollen for later use. Most cacti require cross-pollination to ensure fruit/seed pods. I have 2 Stenocereus Thurberi flowers blooming tonight, but no other compatible pollen from other cactus flowers blooming to cross-pollinate them. However, I do have a few bags of Stenocereus Huastecorum pollen in the refrigerator. I have successfully cross-pollinated cacti and the pollen has been frozen for a whole year. But the pollen used tonight is only one month old.

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