Common gorse is native to Western Europe and has been cultivated in other regions. Its presence spans several continents, including parts of Asia, Africa, and South America. In some areas beyond its native range, common gorse is sometimes thought to be naturalized and may have an impact on ecosystems. Particularly in temperate and subtropical zones, its growth can be aggressive, and, although cultivated, it has established in the wild in certain areas, leading to local ecological concerns.

Common gorse is a toxic plant harmful to humans, cats, and dogs if ingested. It causes severe symptoms, including burning sensation, gastrointestinal distress, and potentially fatal respiratory paralysis in humans, and gastrointestinal upset in pets. Immediate veterinary care is crucial for affected pets. The most toxic parts are the branches, fruit, flowers, pods, and seeds. All contact should be avoided. Common gorse poses a mild toxicity risk to dogs. When consumed, it leads to gastrointestinal upset or skin irritation; immediate veterinary care is essential.

Common gorse originates from Western Europe, specifically the United Kingdom and Ireland. As a weed, it's defined by its robust adaptability, quick proliferation, and potential harm to other plants. Common gorse is a sturdy evergreen shrub with a deep rooting system that impairs other plants' growth, making it a nuisance in gardens. Particularly dangerous are its dense thickets and spiny leaves that can restrict access and pose a physical threat to both humans and animals. If you're growing common gorse in your garden, watch out for its rapid and wide growth, often outcompeting other plants for resources. The main method of common gorse's spread is its seed dispersal, with each plant producing many seeds that can be carried by wind. Furthermore, common gorse's seeds are hardy and can lie dormant for several years, allowing it to cover large regions quickly once conditions are favourable.

The best season to manage common gorse is during the late winter to early spring period, before the plant begins new growth and seeds set. Control is most effective before flowering.