Weed of the Month: Gorse

Posted on 28 November, 2024 by Lori

As we move through spring into the hotter, drier, summer months you will no doubt notice many of the local weeds flowering and seeding. This month, keep an eye out for the invasive Gorse (Ulex europaeus) which is a Weed of National Significance (WONS) and a ‘Regionally Controlled’ weed in the North Central Catchment – meaning landholders have a legal responsibility to control it. Gorse can be found right across the Mount Alexander Shire. It is a prickly woody shrub growing to around 3 meters, producing abundant, pea-shaped yellow flowers followed by pods of seeds which are spread through ‘explosive dehiscence’ in summer or as the weather heats up and dries out. Germination mainly occurs after rain in Autumn and Spring.

Seeds remain viable in the soil for over 30 years, making an integrated and annual control program necessary to keep on top of infestations. Plants can also regrow from stumps. To control, cut and paint isolated individuals, hand pull small seedlings or grub out (disturb soil with a hoe, to essentially dig them up) large quantities of newly germinated seedlings. Spraying herbicide can be used for established infestations. For large infestations you may require a mix of techniques to achieve the best results, such as slashing and then spraying regrowth.

There is now also specialised machinery, called an Eco Blade, that can groom out and chemically treat plants simultaneously which can be ideal for large infestations where there is no other vegetation present. Click here for a list of local weed contractors, and here for the Managing Gorse Manual.

For more information on Gorse or other land management topics, visit the Connecting Country website or contact us via email info@connectingcountry.org.au or phone 0493 362 394. Landcare Groups are also a great resource for learning about local weeds. You can find your local group on the Landcare page of the Connecting Country website.

The Weed of Month article is a segment from Connecting Country’s ‘Partnerships Against Pests’ project funded by Agriculture Victoria in 2024-25. Through this program, Connecting Country is working closely with local community groups, such as Landcare, to raise awareness of local pest plant and animal issues, with the aim to empower community with the skills to address these threats. The project includes seasonal awareness campaigns around key pest issues as well as workshops, and market stalls across the region. Keep an eye out for Connecting Country staff and Landcare volunteers holding weed information market stalls at Mount Alexander Shire markets over the coming months.