Boxthorn was promoted as a hardy, fast-growing hedge plant, with its thorns making an effective boundary 'fence' between rural properties.
Boxthorn once grew prolifically along the High School foreshore. Past students describe not being able to walk along the beach due to the plants long (up to 7cm) thorns! Since their removal, there can still be found the odd small boxthorn plant in this area, which needless to say, receives our prompt attention. Occasional plants continue to be found along the length of our foreshore and in our bushland.
Dispersal: Seeds are efficiently spread by birds, who love to snack on them.
Impact: Left to spread, boxthorn will take-over all other plants.
Control: Boxthorn is arguably the worst of Taroona's Top 10 weeds to deal with. Its thorns penetrate even the toughest gardening gloves and clothing. Seedlings can be hand-pulled, while large plants must be cut and pasted. They often re-shoot, so frequent, persistent follow-up is required.
Safe Alternative: For an alternate, prickly option to provide habitat for penguins and small birds along the foreshore, we use Prickly Box (Bursaria spinosa). Its spines aren't nearly as long! - and it's a local native of course.