Selwyn_Times: July 12, 2023
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Wednesday <strong>July</strong> <strong>12</strong> <strong>2023</strong> <strong>Selwyn</strong> <strong>Times</strong><br />
Latest Canterbury news at starnews.co.nz<br />
GARDENING 29<br />
How to prune conifers into shape<br />
ALONG WITH ferns and<br />
cycads, conifers have a longer<br />
history than most garden plants.<br />
In the evolutionary scale<br />
they lie between the ferns and<br />
the flowering plants, and it is<br />
probably the remoteness of<br />
their ancestry that makes them<br />
so strikingly different from<br />
flowering trees.<br />
While horticulture tends to<br />
favour deciduous flowering<br />
trees, conifers with their distinct<br />
foliage, growth habit, and colours<br />
make a valuable contribution to<br />
any garden setting especially at<br />
this time of the year.<br />
Conifers range in size from<br />
low ground hugging plants to the<br />
tallest of all living things. Over<br />
the years, along with the natural<br />
occurring species, selected<br />
garden forms have provided a<br />
huge range of shapes, textures<br />
and colours with enough<br />
variation to suit most plantlovers<br />
palates.<br />
Growth rates vary significantly<br />
with some assuming tree-like<br />
proportions in only a matter<br />
of years and others can be<br />
extremely slow growing.<br />
Some confers have<br />
foliage when young that is<br />
different from the mature<br />
tree, macrocarpa, Cupressus<br />
macrocarpa and our own rimu<br />
Dacrydium cupressinum are<br />
good examples of this while<br />
the Bhutan cypress, Cupressuss<br />
cashmeriana is a standout simply<br />
because of its delightful growth<br />
habit.<br />
Conifers can be pruned and<br />
trimmed back successfully but<br />
others resent anything other<br />
than the lightest clipping and<br />
for most, if cut back beyond<br />
any living foliage, they will die.<br />
If you want to have a special<br />
contrasting shape in your shrub<br />
border choose a conifer that<br />
assumes that shape naturally. to<br />
pruning conifers, there are a few<br />
simple rules to follow.<br />
The most important is to<br />
choose the right species or<br />
variety of conifer for your garden<br />
and to plant it in a location to<br />
meet its growing needs.<br />
When pruning is required, the<br />
general rule is not to trim back<br />
past the green growth to bare<br />
wood as they will not recover.<br />
However, there are exceptions.<br />
Most species of juniper, yew and<br />
redwood will re-sprout from<br />
bare branches.<br />
You can check before pruning<br />
by looking for any signs of<br />
growth sprouting further back<br />
along the older wood.<br />
Some conifers will form great<br />
hedges, coping well with being<br />
trimmed back regularly with<br />
hedging shears.<br />
However, to emphasise<br />
the natural form and beauty<br />
that many conifers have, it is<br />
much better, when necessary,<br />
to surreptitiously prune with<br />
secateurs.<br />
Branches of columnar conifers<br />
can splay out – this effect can be<br />
prevented with regular pruning<br />
to reduce weight from the<br />
branches, but if it does occur you<br />
can trim the branch back lightly<br />
then discretely tie the splaying<br />
branch back to the main trunk.<br />
Dead or damaged patches<br />
are often hard to remedy, but it<br />
may be possible by first pruning<br />
out the dead or damaged wood<br />
then training neighbouring<br />
branches to fill the gap by tying<br />
and retying them into position<br />
as they grow. Another beneficial<br />
task is the regular removal of<br />
old plant debris, which can<br />
accumulate inside the plant. This<br />
will create a healthier plant by<br />
letting air and light penetrate as<br />
well as improving their overall<br />
appearance.<br />
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