Tarwi

The Tarwi is the second plant unlocked in Roaring Revolution. Tarwis cover the three tiles in front of them with hot, slowing tar that damages zombies that walk through it and disappears after 10 seconds, but it must sleep for 15 seconds. The tar can not be planted on.

Suburban Almanac Entry
Tarwi works day and night to produce tar, and what thanks does he get for it? A zombie nibbling on his headquarters. Making tar is a hard and thankless job, but somebody's gotta do it.

Plant Food
Tarwi creates a geyser of flaming tar that places burning tar in all of the free tiles on its lane. The burning tar does 1 damage every 1/3-second, as opposed to the normal one damage a second of regular tar.

Strategies
Tarwi can be seen as a double-edged sword due to the fact that the tiles with tar on them are utterly unplantable. However, the tar does provide slowing and damage, and the slowing can be stacked with other plants to create a zombie trap. Tarwi can be used in Wild West and Frostbite Caves to slow massive floods of Zombie Chickens/Weasels. There is a significant downtime between tar coatings, so it is not reccomended to be used as a primary attacking plant.

Tarwi's Plant Food is equally double-edged, seeing as the tar produced covers the whole lane but deals three times the damage. Using such plants as Jalapenos is out of the question, so plants such as Grapeshot and Cherry Bomb are reccomended.