Dragon fruit germination

[sidney]

How can I get my dragon to fruit, dozens of flowers but no fruit.

[Rannman]

Cross pollination is the answer. Even if you have a supposedly ' Self pollinating' variety, get pollen from a plant that you a certain is different, and pollinate your flowers.
Most self pollinating types aren't self pollinating! Vietnamese White and Columbian Supreme are the only two self pollinating varieties I have out of over 57 varieties. Even Frankies and Yellow Meg don't set every time!