User blog comment:HfEvra/PvZ2 plants in PvZ2C (Modern Day)/@comment-18464102-20160918020544

We can upgrade Shadow-shroom.

Level 2: Affects all zombies in a 1 times 3 area. If powered up, affects all zombies in a 3 x 3 area. Poisoned zombies also remained poisoned for a longer time.

Level 3: Poisoned zombies are poisoned even longer.

Costumed should be: Now the plant food effect will deal 45 damage to all poisoned zombies without removing the poison effect.

For Shrinking Violet, I think the level upgrade should be this:

Level 2: It has a chance to kill normal zombie size as well.

Level 3: It now can also have a chance to destory Gargs as well. More normal sized zombies are also killed this way.

For Escape Root, the level upgrade should also decrease the arming time.