Plant

Plant monsters were, until Phantom Darkness, a very unsupported Type. The general strategy for Plant-Type monsters is to swarm the field using cards like "Gigaplant", "Lonefire Blossom" and "Lord Poison", but also using cards that summon tokens. They can go hand-in-hand with Insect-Types as well with cards like "Arcane Archer of the Forest" and "Prickle Fairy". The most usual Attribute associated with Plants is EARTH or WIND but they may be of any Attribute. Recent support from Crossroads of Chaos also alters Plant-type strategies to include effects that summon tokens to the opponent's side of the field and trigger on or cause the destruction of fellow plant-type monsters.

Some of the more commonly used Plant-Type monsters include "Mystic Tomato", "Homunculus the Alchemic Being", "Dandylion", "Neo-Spacian Glow Moss", "Lonefire Blossom", "Gigaplant", "Samsara Lotus" "Lord Poison" and "Rigorous Reaver".

Plant monsters were previously very overlooked and weak, until Gigaplant was introduced. Even then, plants weren't very strong and well-used. However, massive support to Plant-Types was released in Crossroads of Chaos, and since Aki Izayoi, a very important character in 5D's, is using plants, more support is expected to come in future sets.

One of the strongest Plant-type monsters being Tytannial, Princess of Camellias at 2800ATK along with the power to negate any card effects that target simply by sacrificing a plant-type monster (which in worst case scenario can even be herself), not to mention the fact that she can be summoned as easily as a level 3 Lonefire Blossom on first turn. In power and strategy she is followed by Gigaplant with 2400 ATK and the power to bring fallen plants back to life from the graveyard. When combined with Gigaplant, she can easily stop any targeting force on the field, and in case of cards such as Lightning Vortex or simply your own Black Rose Dragon's effect, she can be brought back with a Swing of Memories bringing back a Gigaplant or better yet by the effect of Plant Food Chain.

Plant cards usually revolve around swarming and regenerating back onto the field. They have many cards that allow them to be special summoned to the field from the deck and hand but mostly from the graveyard. Cards like "Lonefire Blossom", "Plant Food Chain", "Lord Poison", "Gigaplant", "The World Tree" and "Miracle Fertilizer" all add major support to bringing back a swarm of weeds to annoy your opponent and often overwhelm them.

Example
http://images4.wikia.nocookie.net/yugioh/images/1/1b/Neo-SpacianTwinkleMossPTDN-JP-C.jpg