Wall-Nut

Info

 * This is your basic line of protection.
 * It is guaranteed that one use of it may block weak cats

Strategies

 * Always plant at least one. It can block other cats from scratching your other plants which this can be scratched 30 times or 90 total HP

Trivia

 * This is one of the Basic plants. Others are Peashooter, Sunflower and Tall-Nut
 * This is the most useful plant you need to have in almost every level.