Pruning Trees and Shrubs in the Autumn is Often a Costly Mistake

Gardeners in cold winter climates are usually wellbe delayed to the end of winter, so that the
aware that the autumn is hardly the ideal seasonyoung growth, which has been partially simulated
for pruning both evergreen and deciduous treesby the pruning, will not appear until all danger of
and shrubs. It's sometimes however, less obviousfrosts has passed for the year. The advice you
to gardeners in Mediterranean and other mildmay read about pruning at the onset of winter,
winter climates, where frosts if they occur at all,applies to cold winter climates, not to mild ones
are light and occasional.such as in California, The Middle East, and South
Pruning evergreens in cold weather greatlyWest Australia.
increases the possibility of bacterial and fungalA further danger lurking for Mediterranean climate
infection, resulting in the development of rotgardeners concerns some trees and shrubs of
around the pruning cuts. While on the other hand,tropical or sub-tropical origin, that drop their leaves
it is common knowledge, hopefully, that deciduousin the winter, but are not naturally deciduous
plants should be pruned in their dormant season,species. These are often more sensitive to cold
which is of course during the winter.temperatures than many evergreen plants, like
The trouble in Mediterranean type climates is thatOlive and Viburnum, and are never seen in cold
the transition from warm summer weather toclimates. They are however, especially vulnerable
cold wintry temperatures is often sudden andto the damage caused by autumn and winter
abrupt. One day at the end of October, it can bepruning. It is essential therefore, to know what
27c in the shade. The shrubs appear too openyour tree or bush is and where it originates,
and leggy, looking as though they need a goodbefore assaulting it with the saw and secateurs!
prune to encourage dense and compact growth.A simple rule, worth remembering, is that
Pruning the trees and bushes at such a time, canevergreen, or cold sensitive trees and shrubs
be highly detrimental to their health, because theshould only be pruned from the spring through the
new juvenile growth will be damaged, invitingsummer. The end of the summer is probably the
infection, if early frosts occur in November. Theselast chance for a major pruning operation. If the
may be rare, but they do happen.weather is still warm, but winter only a couple of
Concerning deciduous species, the danger of rotweeks away, then it is best to accept that you
that is caused by fungi or bacteria enteringhave missed the boat and delay the pruning until
through the pruning wounds, is no less acute. It isthe following spring.
for this reason, that pruning woody plants should