User blog comment:Milesprower2/PvZ Math: Best Boosts/@comment-1764483-20141225020321/@comment-5792287-20141226120449

I didn't list defenders because their boosts aren't much use, except Infi-nut, which has its limits (as far as I know, forcefields don't stack, so multiple boosted Infi-nuts in one column aren't particularly effective).

I didn't list Potato Mine or any other plants that spawn more of themselves because their usefulness is extremely luck-based (they might spawn copies where they aren't any use) except for Lily Pad, which is massively inferior to any sun producing boost/PF.

Bloomerang, Bonk Choy, Snapdragon, Lightning Reed, and Magnifying Grass are difficult to compare to any others, but aside from Bonk Choy and Snapdragon, they tend to suck anyway.

Tangle Kelp is rather weak and also difficult to compare.

Banana Launcher didn't really fit in with other categories, and again, has a rather luck-based boost as the missiles may miss important targets.

Squash, Torchwood, Starfruit, Hypno-shroom, Homing Thistle, Ghost Pepper, Sweet Potato, Sap-fling...most are difficult to compare to others or are rather useless.

So in other words, I only left out the ones that are really hard to compare, or are not really worth mentioning when I'm talking about the "best" boost. I know it was a fair amount of plants, but I covered most of the popular boosts.