Mom was a Peashooter. Dad was a nut. Everyone said it wouldn't work, but they were wrong.
Strategies
Pea-Nut can be portrayed as a Wall-Nut with 2 less Health, but with 2 more Strength. It can either be better or worse than a Wall-Nut - It can fight back, unlike Wall-Nut who can just take hits, but Wall-Nut can be affected by Spineapple, which in that case, Wall-Nut would be a better version of Pea-Nut, with 2 more Health. On the other hand, Pea-Nut can benefit from Torchwood or The Podfather, but only as Grass Knuckles.
Overall, this is a pretty standard Plant to use.
Against
Since this is a Nut Plant, Squirrel Herder is able to destroy it once it comes out of the Gravestone. This plant is also vulnerable to Weed Spray and Rolling Stone, due to its low strength. However, if its strength is buffed, it will be immune to these tricks. If the strength is buffed to 4 or above it will be vulnerable to Rocket Science.