Nightshade

Nightshade is a Tier 2 offensive plant that stabs zombies when approached, up to three times. It costs 100 Sun to plant.

Description
Nightshades stab zombies with sharpened leaves.

Lore Almanac
For Nightshade, smacking is a duty and a privilege. He comes from a long line of ardent smackers, and his family counts three kings, four ambassadors and a president as among those proudly slapped around.