Re: Blossom Set

Tomatoes are self pollinating. Meanwhile pumpkins produce separate male and female blossoms. Therefore, the pollen from the pumpkin male bloom needs to be transferred to the pumpkin female blossom (the female bloom is easily identified because of the small fruit growing directly behind the bloom). This can be done by bees or other insects or by hand. Giant pumpkin growers usually perform this task manually.
Blossom Set for tomatoes has been around for a long time and I am not sure that it actually works other than by spraying the tomatoe blossom, you cause pollen to be dispersed from the anthers to the stigma which sets a fruit. Gentle flicks of the tomato blossom between 8 am to 10 am is the best time for tomatoes to be pollinated by hand. 

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