Plant

Plant is a creature type used for organisms that produce their own food from inorganic matter by the process of photosynthesis and that have more or less rigid cell walls containing cellulose. This definition includes mosses, but excludes [fungi]]. Sentient trees are classified as Treefolk. The Plant subtype was introduced relatively late. The first creature to bear the type was Utopia Tree in Invasion (though the Carnivorous Plant from The Dark and Singing Tree from Arabian Nights were later issued errata to become beasts).

In the Grand Creature Type Update a lot of cards gained the additional Plant type. Note that while Wall of Blossoms and Tinder Wall now are Plant Walls, Wall of Wood is just a Wall. "Wood" is no longer alive, so it's no longer a Plant.

Trivia

• As printed, Jungle Patrol made Wood Wall tokens, and it could sacrifice Wood Wall tokens. When Wood was eliminated from the creature type list, the card was adjusted to make and sacrifice Plant Wall tokens. But this didn't really match what we did with other similar cards that had made (and, in some cases, affected) unique tokens. Wall of Kelp, for example, changed from making Kelp Walls to making "Plant Walls named Kelp". Jungle Patrol will also got the "token named [Name]" technology applied to it, which kept the tokens it made and affected rather unique. It also lets them go back to making Wood tokens, in a way. The tokens were no longer Plants. This decision was based on the original concept of Wood tokens. the Jungle Patrol has already chopped down some trees (thus creating wood), and can set them on fire (sacrificing them to create Red Mana).
• Though Plant Elemental obviously became a Plant Elemental in the update, Aboroth, Barishi and Floral Spuzzum just became Elementals.
• The subtype of Urza's Power Plant is Power-Plant, not Plant.