It is probably the plant which grows the most slowly.
It can take a hundred years to grow a few centimetres.
But plants can also be as big as the Giant Redwood,
the world's most massive living thing.
One tree in California is 84 m high
and probably over two thousand tonnes in weight.
No other type of tree grows higher than the Giant Redwood.
The Dead Horse Arum attracts flies by looking and smelling like dead meat.
Once they get inside the plant,it shuts a door,
and keeps them prisoner for a night.
During the night, it drops pollen on them.
It releases them the next morning covered in pollen,
so that they can go and carry the pollen to another Arum.
One type of Acacia tree in South America encourages ants to live in it.
The tree provides the ants with a home(in special branches)
and with food (little pieces of protein at the end of some leaves).
In return,the ants defend their tree as fiercely as they can.
They attack any other insect or animal which comes near,
and even remove other plants growing near it.

这也许是植物里生长速度最慢的一种了。
它可以在几百年的时间里只生长几厘米。
但是植物也可以像巨型红木那样巨大,
巨型红木是世界上最大的生物。
加利福尼亚州的一棵巨型红木已经有八十四米高
拥有超过两千公吨的重量了。
没有任何一种物种能比巨型红木还要高。
白星海芋通过让苍蝇看起来和闻起来像是腐肉来吸引苍蝇。
一旦苍蝇进入了这种植物的内部,它立马就会关上门,
并把他们关在门里整整一夜。
在这一夜里,白星海芋会让花粉落在苍蝇身上。
并在第二天一早把全身沾满花粉的苍蝇放走,
这样他们就可以带着白星海芋的花粉去给其他海芋授粉了。
在南美洲有一种阿拉伯胶树会让蚂蚁住在里面。
这种树会给蚂蚁提供房子(在特殊的树干上)
以及蚂蚁的食物(一些叶子的末端可以分泌一些蛋白质)。
作为回报,蚂蚁尽自己最大力量来保护这棵树。
它们会攻击任何试图接近的昆虫或者是动物,
甚至会铲除其他向附近生长的植物。