There are many kind of plants on an island that vary in shape, size, colors, items dropped, and uses. They are found all over an island, and some plants associate with what type of biome the island is based on. Some plants drop items when they are hit with a tool or your bare hand, while others can be picked up by right clicking with your hand or pressing the use key(default key "E"). The plants that can be picked up will be destroyed if they are whacked at (some do take more hits to destroy, though).
There are also plants that produce fruits or items of some sort. The fruits can be obtained the same way as plants: some require hitting, while others can be picked up as is.
You can plant the following: