|
 Honey
locust (Gleditsia triacanthos)
is a native of eastern and
central North America. In was apparently introduced
into Australia and planted for its value as a source of stock fodder. The photo,
left, shows an example of an "orchard" of honey locust trees planted
some years ago in a paddock in Bingara,
NSW. Note the number of seed pods on each plant!
Honey
locust's efficient means of spread, firstly through deliberate plantings and
then through its floating seed pods, has allowed the plant to establish in many
areas of many parts of
eastern Australia. It is quite common along a number of inland river
systems, including the McIntyre and Severn Rivers in Inverell Shire. Photo
(right) was taken at Wells Crossing, Severn River near Ashford, NSW.
 Honey
locust grows to a height of 20 metres or more. The trees are armed with
long and very tough spines, forming a formidable barrier to animals and humans
as the trees become larger and more densely populated along watercourses etc.
The seed pods grow to a length of up to 20 cm. each containing 20 to 30 seeds.
To quote
directly from
www.weeds.org.au Notes: Introduced as a fodder tree and cultivated as an
ornamental. Pods are first produced when trees are 3–5 years old. Trunk is
protected by thorns. Found in dense thickets along watercourses on the central
coast, western slopes and tablelands of northern NSW and in south eastern
Queensland. Introduced by William Macarthur to 'Camden Park', Camden NSW in mid
1800s and now widespread on the floodplain of the Hawkesbury-Nepean river
system.
CONTROL
METHODS
Chemical Options: According to NSW DPI’s excellent booklet
“Noxious and Environmental Weed Control Handbook 3rd Edition”,
treatments include:
Non-Chemical
Options: Mechanical control is possible but will require follow-up
treatments.
|
Chemical options |
Rate: Spot/Boom |
Comments |
|
Triclopyr + Picloram
Access ® |
1.0 L in 60 L of diesel |
Basal bark application for basal diameter less than 5
cm or cut stump application for above 5 cm. |
|
Fluroxypry 200 g/L
eg Starane®
Please refer to label directions |
500 mL per 100 L water
1.5 L in 100 L of diesel
3.0 L in 100 L of diesel
1.5 L in 100 L of diesel
5L per 100 L diesel |
Foliar application, plants up to 2m high (+
surfactant)
Basal bark treatments: treat to height of 45 cm above ground
Plants up to 10 cm basal diameter
Plants 10 to 20 cm basal diameter
Plants >20cm basal diameter
Cut stump application for all size plants |
Picloram 45 g/kg
Vigilant® |
Undiluted |
Cut stump/stem injection application. Apply a 3–5 mm layer of gel for stems
less than 20 mm. Apply 5 mm layer on stems above 20 mm (see label). |
MPORTANT:
USE OF PESTICIDES – ALWAYS READ THE LABEL
Pesticides must only be used for the purpose for which they are registered and
must not be used in any other situation or in any manner contrary to the
directions on the label. Never use a herbicide in any way contrary to the label
recommendations.
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DISCLAIMER:
The information contained in this web site is based on knowledge and
understanding at the time of writing. However, because of advances in knowledge,
users are reminded of the need to ensure that information upon which they rely
is up to date and to check currency of the information with the appropriate
officer of North West Weeds or the user’s independent adviser.
LRT 233/06/2010
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North West Weeds
