by docsquid » Mon Jul 02, 2012 10:49 am
It depends what area you are dealing with. When we took ownership of our woods, we thought that we would be able to remove the brambles by brush-cutting. This worked until Spring happened, and we had no chance of even keeping up with the growth, let alone making headway of the huge overgrowth of brambles which was a result of livestock grazing over the better part of 100 years in our woods, and the subsequent over-fertile ground. The overgrowth was covering a large proportion of our (then) 11 acre ancient woodland and stifling all regeneration, as well as growth of normal woodland understorey and ground flora. The Forestry Commission recommended a tractor and rotary slasher. A rotary slasher is like a super heavy-duty flymo. It really does nuke the brambles, so you can't do this in the bird-nesting season, and need to be careful if you think any protected species, such as dormice, are living there (there aren't any dormice in our area).
The downside of this is that the kit is expensive. Our tractor (a Massey Ferguson 188) was bought from a farm auction and restored on our patio, to the amusement of our neighbours. But we are lucky, we live 1 mile from our woods, and also got planning permission for a tractor shed thanks to an existing concrete pad at the site. My husband is also very nifty with metalwork, which helped, as a number of parts were obsolete and the tinwork needed quite a bit of welding. The slasher we got at cost price from a dealer who wanted to clear his yard.
This is not the same as an agricultural topper - it is a piece of forestry kit, which is probably why the dealer was having trouble selling it. But, after a few years of mowing with the slasher, the brambles get the message and retreat. We have cleared paths and areas which subsequently show regeneration of trees, freed from the constraints of bramble. Then we can manage it with a brush cutter or even secateurs while the trees are young. We have also planted shrub-layer trees (hazel, mainly) over-dense in these areas, and these tend to suppress the bramble after a couple of years of growth - we can thin them later.
If you can get access for a tractor (our trees all have grazing damage from livestock, so few low branches), you don't have to buy one - you could get a contractor to do the job for you. Having said that, the tractor has been hugely useful in other ways too - like fitting a hydraulic log-splitter, a cambridge roll for rolling in meadow seed, and the bucket for doing all sorts of management tasks around the site. The down side is that you need a decent sized machine to run the slasher (not a toy tractor), and classic tractors are starting to get expensive as many people collect and restore them. You need one that isn't in the classic bracket, isn't so new that it is expensive, and isn't so old that it is completely worn out.