Primal Wall-nut

Primal Wall-nut is the second plant obtained in Jurassic Marsh in Plants vs. Zombies 2. It costs 25 more sun than Wall-nut, but has the same toughness and a fast recharge. Additionally, it can withstand up to three smashes from Gargantuars instead of just one, similarly to Spikerock.

Almanac entry
Sun cost: 75

TOUGHNESS: High

RECHARGE: Fast

Primal Wall-nuts cost a bit more than typical Wall-nuts, but they can be planted much more quickly.

"Grunt," explains Primal Wall-nut. "Grunt oog grunt-grunt," he goes on to say. "Ook-urg grunty grunt grunt," he concludes. A nut of many opinions, is Primal Wall-nut.

Plant Food upgrade
When fed with Plant Food, Primal Wall-nut gains a rock armor with a drawing of a Wall-nut on it, capable of absorbing 160 additional bites or one Gargantuar smash, totalling the amount of maximum bites to 240.

Strategies
In most situations, Primal Wall-nut can be considered a straight upgrade to Wall-nut. While it costs 25 sun more than the latter plant, the increased sun cost is usually worth the greatly shortened recharge rate, which will allow the player to secure lanes much more easily early on, as well as repair defenses as the level progresses. Primal Wall-nut is particularly useful in halting the advance of Gargantuar in normal levels, due to its resistance against their smash attacks.

A combination of Sweet Potato and Primal Wall-nut is useful, as Sweet Potato attracts zombies while Primal Wall-nut defends it, accompanied by other plants causing great damage to the zombies in the lane of Sweet Potato.

It is also a good idea to use Primal Wall-nut in Neon Mixtape Tour against Hair Metal Gargantuars, as it has a fast recharge rate and can absorb up to three shockwaves at full health.

Trivia

 * It is the only defensive plant that can survive more than one hit from a Gargantuar without Plant Food.
 * When Primal Wall-nut reaches his second degrade, his left eye twitches for a few seconds.
 * Unlike other defensive plants whose Plant Food effect allows them to gain armor, Primal Wall-nut's armor covers it entirely.
 * The armor also resembles carbonite from Star Wars.