The tomatoes can cross pollinate, but tomatoes can 't cross pollinate with your

corn
Strawberries
Raspberries
Watermelon

You have two cukes, the Straight 8 one is Cucumis sativus, regular cukes and I don't know what your Asian cukes might be but if you're talking Armenian, aka snake cukes/melons, those are C, melo, which are different, but neither one can cross with tomatoes.

Have you looked at the FAQ link at the top of this page where you'll find an excellent article, with pictures, on How To Prevent Cross Pollination ( of tomatoes)?

Carolyn

Thank You
-TomAndJerryGardener