a stake/tree
The best place to look for wood fence stakes would be your local lumberyards. They generally carry what you need and may even custom cut them for you.
A palisade.
A stockade is a fence formed by upright stakes or sharpened posts. It can be used to form an enclosure for animals.
Could be "Nursery Stakes"
a fence of pales or stakes set firmly in the ground,as for enclosure or defense. any of a number of pales or stakes pointed at the top and set firmly in the ground in a close row with others to form a defense.
Belmont Stakes
The Dingo Fence
Yes - palisades is a plural noun - the word palisade means a wall or defensive barrier.Noun(n) palisade (fortification consisting of a strong fence made of stakes driven into the ground)Verb(v) wall, palisade, fence, fence in, surround (surround with a wall in order to fortify)
A fence of bushes is called a hedge.
grapon
It is called a stile.