Board Thread:Plants vs. Zombies 2: It's About Time/@comment-24922984-20150425214231/@comment-24203813-20150429025755

My guesses for what the plants do:

Sunpod: Perhaps some sort of plant that will allow a plant to produce sun if it's planted on one?

Columnpod: A plant that can be moved along a column, like a mine cart.

Sungun: Shoots peas at zombies, but uses up 5 sun per pea.

Golden Tile Turnip: @Reapeageddon's idea.