Why are hedgerows a heroic feature in the landscape?
You may see
hedgerows in the landscape when you're out walking, but have you ever wondered
about why they are there, and why they are so important?
History of Hedgerows
The first
hedgerows appeared when woodlands were cleared to make room for fields and
sometimes strips of trees and shrubs were left to make boundaries. Between 1604 and 1914 Enclosure Acts were
enforced, to put boundaries on land to mark out the individual holdings. This
transformed the land from open and communal to being separated by planted
hedgerows and walls.
Farmers
planted rows of trees and shrubs not only to separate and mark out farm and
parish boundaries; but also to control the roaming of livestock and to provide
them with shelter from poor weather. Popular species planted as hedgerows
include hawthorn, blackthorn, field maple, hornbeam, dogwood and dog rose.
Other species such hazel, ash and oak are sometimes used.
During the
Second World War, the government encouraged the removal of hedgerows to
increase field sizes so production of food could be increased and the UK could
become self-sufficient. Financial incentives were put in place to encourage
removal of hedgerows and new, bigger, more powerful machinery was created which
was too big to be used in small fields. Other factors such as changes in
farming practices and development has also caused the loss of hedgerows. This
resulted in a huge loss in hedgerows throughout the country, and therefore a
huge decline in species that relied on them, especially birds and dormice. To
find out more about the history of hedgerows go to
https://www.rspb.org.uk/our-work/conservation/conservation-and-sustainability/advice/conservation-land-management-advice/farm-hedges/history-of-hedgerows/
Removal of
hedgerows is now recognised as having had a negative impact on the landscape,
biodiversity and natural flood management and now more planting has started
across the country. Government changed their financial incentives from removal
to re-planting of hedgerows to try and regain the habitat and increase species
populations.
Why do we lay hedges?
Hedgerows that
are left unmanaged will grow into a line of trees which makes it a poor habitat
for many species, see picture on the right. Small mammals and birds will not
use tree lines to nest or shelter as they are too open to predation. Livestock
do not get much shelter from a line of trees either, and generally if it is
used as a boundary, farmers will end up fencing along the line of trees to make
it stock-proof.
Laying the trees in the hedgerow is the traditional way of
managing hedgerows and creating a living stock-proof barrier. By laying a hedge
it creates an amazing habitat for a wide range of species from mice, to
hedgehogs and birds. It creates a wildlife corridor for species to move throughout
the landscape which decreases the chances of disease, population fluctuations,
starvation and inbreeding. Hedgerows are also used for nesting sites, food,
shelter and hiding from predators. Hedgerows also double up as shelter for
stock and reduce wind speeds which helps with reducing erosion of soils.
How do you lay a
Hedge?
To be able to lay a hedge, firstly a cut called a pleacher
must be made at the base and to one side of the tree depending on which way it
is to be laid. All hedgerows are laid up hill, although if it is a hedgerow
alongside a road it is always laid in the direction of the traffic.
Using hand tools is the traditional way of hedgelaying.
Tools used include an axe and billhook, which are used to create the pleachers.
Bow saw, pruning saw and loppers are used to trim the tree back and cut off the
left over stump – a feature called a heal. To see pictures of these tools follow
this link
https://www.flickr.com/photos/123521075@N07/33016820636.
This is a picture of the first cut being made to the tree
with an axe. This will reduce the thickness of the tree so that it can be laid
down to create the hedge, however not so thin that the tree snaps off from the
stump. This will leave a section of the tree trunk left behind, which is called
a heal which will be cut off once the tree has been laid.
Once the tree has been laid into the hedge, a diagonal cut
towards the roots of the tree can be made to smaller branches which stick out
too much from the hedge. By doing this it is representing the pleacher cut of
the tree trunk and allows the branch to be bent towards the hedge to make the
laid hedge thicker and denser so that it is more stock proof.
Professional hedgelayers use chainsaws to lay the hedges as
it is quicker and more cost effective. The chainsaw does the same cuts, so this
picture is showing the pleacher cut being put into the tree trunk.
This is a picture of the final laid hedge. The lighter
coloured parts at the bottom of the tree trunk is the pleacher cut which
enables the tree to be laid. Stakes are then put in about every meter on
alternate sides, to retain the hedge. The material from the trees is used to
give the hedge thickness. Everything in this hedge is still attached to the
trees so it creates a living boundary.
Sometimes when
hedgelaying, technical cuts such as this 'Z' cut is used to fill up a gap in
the hedge. This is not often used but it is a good way of filling the space. A
cut is made either side of the trunk shown in the picture on the left. It is
then bent backwards and then folded on top of itself – shown in the picture below, to fill in the space but the tree is still being laid in the same
direction. The heels of each cut are taken off to neaten it up.
All cuts
that are made to the tree, will
encourage
the tree to re-grow, and therefore
make the
hedge thicker and more stock-proof.
Different styles
There are more than thirty different styles of hedgelaying
across the UK. Each style has been developed over many years to cope with the
climate of the area, different farming practices and the type of trees and
shrubs that grow in the hedge.
The Lancashire & Westmorland hedge style; which is used
in the Pendle Area, need to be well maintained to retain both cattle and sheep.
Wooden stakes are placed about 18″ apart on alternate sides of the laid hedge
with the pleachers (cut stems) layed between at approx 45°. The pleachers are
woven around the stakes and the hedge finished to a height of at least 3′ 6”.
To find out about other common styles and the pictures of them follow this link
https://www.hedgelaying.org.uk/pg/info/styles.aspx
If Hedgelaying has
interested you…
Come along to the Bowland Hedgelaying Grand Prix
Competition, on Saturday 2nd March at Cockshotts Farm in Sabden, BB7
9EH.
Come see the hedgelayers in action, join a guided walk
around Sabden Valley at 10.30am, get involved in a family friendly nature trail,
and have a go at hedgelaying and drystone walling. Refreshments and local
stalls available all day!
Want to get
involved in the landscape and join our volunteer group?
The Pendle Hill Landscape Partnership offer a variety of
volunteering opportunities at various locations.
· Want some experience of dry stone walling,
archaeology, conservation management or working with schools?
· Got some spare time this year and love your
local landscape?
· Love sharing your stories and researching about
local historic figures?
· Want to keep fit, learn new skills and assist
your local community?