Crow Garlic Control Guide

Do's and don'ts of crow garlic control

Crow Garlic

Do's

  • Plan your control program, this will save time and money in the long-run;
  • Consider the impact of your control methods on off-target species, especially if herbicides are used;
  • Ensure machinery and equipment is washed down between sites or prior to contractors leaving site;
  • Carefully time your use of herbicide for best results (see Herbicides for Crow Garlic Control for more information);
  • Coordinate your control program with neighbouring landholders where your weed problem crosses property boundaries;
  • Revisit and regularly inspect the site and ensure follow-up is undertaken;
  • Use a combination of different control methods.

Don'ts

  • Don't introduce crow garlic to crow garlic-free areas (e.g. by failing to wash down machinery and equipment between sites);
  • Don't start your control program without first planning your approach;
  • Don't rely on one attempt at removal - follow-up is essential;
  • Don't rely on just one control method.

Spread of crow garlic

  • Established infestations increase largely due to germination of the central bulbs and offset bulbs.
  • Spread to new areas can occur through bulbs, offsets and bulbils being scattered by cultivation, movement of topsoil, and in mud on agricultural implements or on the feet of stock.
  • Bulbils can be dispersed by heavy rains, in hay, and more rarely, as an impurity in seed grains or pulse.

Avoid the introduction of crow garlic

  • If you are cultivating an infested paddock, always work from the clean end of a paddock into the infested area.
  • Machinery should be carefully washed down before leaving the infested area.
  • See the Washdown Guidelines for Weed and Disease Control for detailed information on how to wash-down equipment and personnel to reduce the chance of spreading crow garlic.

Cultivation

  • Avoid autumn-sown cereal cropping. The bulbs, bulbils and offset bulbs are scattered by autumn cultivation and the life cycle of the garlic coincides with that of the crop.
  • A program of spring sown cereal cropping can control a crow garlic infestation.
  • Where possible, cultivations should extend from autumn through winter into spring: the earlier cultivations stimulate germination, and the later cultivations damage the plants when their reserves of nutrient are exhausted.
  • Later cultivations may be replaced with the application of an effective herbicide.
  • Ensure the best growing conditions for the crop or pasture to maximise competition.

Chemical control

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