It's a dead hedge, or it's an early stage living hedge, or it's a barbed wire fence (at this stage.) Pick a word, any word.
What it is, is a low dollar cost deer-stopper. It's significantly more labor than putting up purchased woven steel fence, unless the line you want to fence is mostly already a thicket you'd have to clear anyways in order to put up a fence there.
The live part of this one is currently cherry laurel, which is not ideal as the deer like to eat its shoots and it does not have thorns. The cherry laurel thicket was about 15' wide and as tall in some places, most the way down the line in the photo (and was mostly passable to deer.)
This barrier protects the blackberries, which also need deer protection to start if you are going to grow them into a living fence. These blackberries are going into their second year and are hardly visible in the photo but they are planted ever 2-3' at the base of this deer-stopper...the soil and water conditions are so poor at this location that even the "aggressive and invasive" erect blackberry needs 5+ years to grow into a barrier a deer won't want to mess with (and that's if you fork and fertilize and it is not grazed.)
The dead hedge part of this one is blackberry canes, oak limbs, and witch hazel limbs. They make for a nasty tangled mesh a deer won't much try to wade through, and you don't have to do any weaving. Just kinda prop them up mostly erect if you can, with the thick end of the limb on the ground.
A big buck all jacked up on April growth will out of curiosity jump a 6 foot barrier 3 feet in width here, if it can see it's landing zone. This hedge is mostly 4.5' to 5' tall. But it stops the big buck because it's mostly 4 ft or more wide, and there is a single line of barbed wire run through the area they would have to pass through on the way down, if they attempted to jump it.
1320 foot of barbed wire is $75, it lasts 15+ years if not buried (even in this climate) and it can be used repeatedly to establish a living fence. Only problem is, it's slow and thorny AF to thread a line of barbed wire out of a blackberry hedge that has grown around it. But it can be done and it's a 1 time thing, and then living fence for life with a bit of maintenance, and barbed wire can be used to establish a new hedge elsewhere. Even though a 6' barrier is only 133% the height of a 4.5' barrier, making a brush hedge 6' tall needs something like 50% more brush and labor than a 4.5' one, and it tends to collapse faster. $75 per 1320 feet of barrier at -50% labor investment that can be used 15+ years? SOLD
Deer do get through the "just enough" fencing method a few times in its preliminary stages, except they only have to land on the barbed wire 1 time, and they will not attempt it again. Now and then, there will be a hole blasted through such a dead hedge where a deer misjudged and wiped out trying to clear it. Also, you can use a little observation to know the weak spot they use to jump through if they are, and (I imagine) pretty easily snare a deer. A person can definately set a scrap ~7ft section of 4' woven fence horizontally and suspended 3 feet off the ground in the landing zone. One time I was chasing the deer out of one paddock and I saw it jump into the horizontal suspended section of woven fence. It looked like it might have broken its neck on the botched landing, but it rolled over and got up and ran for its life, with the fence section still hooked on its hind leg. I had to go like 100 yards into the next property to retrieve my trap (that deer was never seen again.)
A stretch of former dead hedge, 6 years later.
Best of luck dealing with the deer.