Tile Turnip

Tile Turnip is a plant that appears in Far Future. It creates Power Tiles. This is the last plant unlocked in Far Future. It starts as a free plant, but then it increases its sun cost to 250 after being planted the first time. With any subsequent plantings its sun cost will double. The maximum amount of times this plant can be planted without hacking is seven, because at that point the player cannot get enough sun to plant it. The Tile Turnip can be planted on tiles occupied by other plants, but plants cannot be planted on an empty tile while a Tile Turnip is creating a Power Tile. It digs into the ground when planted, and a purple Power Tile with a purple circle in the middle appears in the slot which the Tile Turnip was first planted.

Almanac Entry
RECHARGE: Mediocre

Tile Turnips create a Power Tile on planting.

DJ Tile Turnip changed dance floors with his underground hit "Turnip the Beet." What's his latest mix? When he lays it down, you'll feel the power.

Strategies
The Tile Turnip is an excellent plant when one wants to increase explosive power of their Plant Food upgrades. However, it must be used wisely, as it does not work well with all plants whose plant food upgrade's range is in a straight line. Those plants are ineffective with this plant as its sun cost increases drastically for each Tile Turnip planted on the screen and a column of them would take 3750 sun to plant.

An excellent recipient for Tile Turnips are Winter Melons; their high-power Plant Food upgrade affects all zombies on screen, and using Tile Turnips, its effect is doubled just for the price of one Plant Food. If there are three Tile Turnips under them, the effect triples and it would most likely destroy nearly any zombie on screen. Another good recipient for Tile Turnip chains are Multi-Directional plants such as Threepeaters and Snapdragons, as their destructive Plant Food effects can easily damage or kill nearly any zombie on screen. Other viable strategies is to use these in the Pirate Seas, as the most zombie attack is limited to a couple lanes, giving you more options for Power Tiles arrangements. If you need a huge amount of Sun income to come your way, plant these Turnips on your Twin Sunflowers. If you have extra Plant Food and you do not have any important use for it, use Plant Food on those tiles or 750 sun for 4 tiles.

Tile Turnips can be used with Sun-shrooms to get a lot of sun.

Only use Tile Turnips if there is no same shape tiles on the first row. You will earn 500 for 3. However, once a Tile Turnip becomes a Power Tile, it cannot be dug up and this means that one wrong placement might affect the remainder of the level. It is not recommended to copy the Tile Turnip as the sun costs of both versions of the plant will raise at the same time and thus it does not allow you to place more Power Tiles.

Since Tile Turnip's sun cost increases as it gets planted, Power Lily is also needed to replenish Plant Food, but only do this in higher levels of Endless Zones. Otherwise, refrain from using this plant or the player will have hard time in the next level.

Sun cost
Unlike every other plant, the Tile Turnip is the only plant to always have a variable sun cost. It starts out at 0 sun, then increases by 250 for the second, and doubles for every Tile Turnip planted afterwards. There is up to seven possible Tile Turnip placements per level before the sun cost exceeds 9900 and is unplantable.

Trivia

 * It is the only plant that can create Power Tiles.
 * This is the most expensive plant in the whole Plants vs. Zombies series.
 * Of course, this is only when you plant more then three, but if you don't plant a single one before you check the sun cost.  Before planting one, the sun cost is 0.
 * This is the only plant that can only be planted limited times.
 * It has a small resemblance to the Beet from Plants vs. Zombies Adventures.
 * It can be used in worlds besides Far Future.
 * If it is used on a minecart, the minecart itself will become a Power Tile, it can be moved just the same.
 * There is a glitch where, sometimes Power Tiles on minecarts will not receive Plant Food charges from other tiles.
 * "Turnip the Beet" is a pun on "Turn Up The Beat".
 * It only creates the purple circle Power Tiles.
 * Tile Turnip is the only plant that cannot be planted on Power Tiles, ironically.
 * The Grave Buster can't also be planted on a Power Tile, but it can be planted on a Tombstone that is on a Power Tile.
 * If the player uses it with Imitater, be it the original or the imitated one, both the original and imitated Tile Turnip sun cost will increase.
 * There is a glitch with the Tile Turnip where it will occasionally be lit up as if it can be planted when the player does not have enough sun to. It can then be selected and dragged to a spot on the lawn where it will prompt the player with the "You do not have enough sun to plant this" dialogue.
 * It can be planted on planks in Pirate Seas despite it burrowing itself.
 * In the Far Future trailer, a plantable Tile Turnip costs 64000, even though it is impossible to reach or get past 16000, without hacking.
 * It's possible the game creators wanted to test the stage after uploading it for real.
 * The purple ring around its leaves may be the purple circle in the Power Tile.
 * If the Tile Turnip is planted on any plant, the circle on the Power Tile will not glow.
 * It is the only turnip in the entire Plants vs. Zombies franchise.
 * The Tile Turnip's costume resembles Bjorn from Peggle, another PopCap game.
 * The only way to get Tile Turnip more than seven times is by the conveyor-belt in Piñata Party.
 * This is the only plant in Plants vs. Zombies 2: It's About Time that can be planted on top of another plant.
 * If the Player plants a Tile Turnip on a Puff-shroom and put a Plant Food on another one, the Power Tile will have a green border.
 * Tile Turnip is the only plant that gradually doubles the sun cost whenever one is planted in the lawn.
 * The game's coding refers to it as "Power Plant".
 * When it is spinning, its costume disappears.
 * This and Imitater are the only plants that do not have a constant sun cost.