Flower Pot

The Flower Pot is required on the Roof levels, because it allows you to plant other plants on the roof, similar to the Lily Pad on water. Even though it is for planting on the roof, it can still be planted on the front lawn, but not on Lily Pads for some strange reason.

Suburban Almanac Entry
Flower Pots let you plant on the roof.

Special: allows you to plant on the roof.

"I'm a pot for planting. Yet I'm also a plant. HAS YOUR MIND EXPLODED YET?"

Recharge: fast

Cost: 25

Usage
Plant it on the Roof, and then put a plant in it. Flower Pots cannot attack, and do not have any point outside of the roof levels, but have just slightly above the normal amount of resistance to chewing. To plant any explosives like Cherry Bombs or Doom-shrooms on roof levels, a Flower Pot is still required. If a Doom-shroom detonates on top of it, it is destroyed and a crater appears in the roof. The strongest anti-zombie barrier in the whole game is when you plant a Flower Pot, a Pumpkin, and a Tall-nut together, which will hold a zombie for upwards of four minutes (longer when the zombie is frozen or there is a Kernel-pult in the same row).

Note: This is not as sun-efficient as just a Tall-nut or just a Wall-nut, though the latter can be vaulted/jumped over, and the single Tall-nut setup can be hard to maintain due to its long recharge time.

Note: Spikeweeds and Spikerocks cannot be planted in Flower Pots as it is impossible for them to attack from below if zombies aren't stepping on them.

Strategy
You can use it to slow down Gargantuars in emergencies and to make Pole Vaulting Zombies lose their poles, or to provide a few extra seconds before the zombies get to your defenses in levels such as Column Like You See 'Em. Apart from that, you just use it to plant on the roof.

Trivia

 * Flower Pots are the only plant in the Suburban Almanac with a Roof background.
 * The Flower Pot is actually a plant itself, according to its Suburban Almanac entry.
 * If you look closely, there is a sprout with leaves on the Flower pot.
 * The Flower Pot cannot be put in the Zen Garden.
 * Flower Pots planted on the lawn have faces while the Zen Garden Flower Pots do not.
 * This may be because Zen Garden flower pots may be the only plant that can`t be planted