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Bracken Control

Bracken Control

  • Common Name Bracken, Brake Fern
  • Scientific Name Pteridium aquilinum
  • Areas affected Gardens and allotments adjacent to infested land
  • Main Causes Bracken spreads via spores and underground stems
  • Timing Seen spring to autumn; treat in summer

What Is Bracken? 

Bracken (also known as Pteridium aquilinum) is a native British fern. Its normally found in woodland and heathland rather than domestic gardens but can easily spread from infected adjacent countryside. It is known to be tolerant of a wide range of soils and climates. 

Appearance:

Bracken is typically fern-like, producing triangular fronds, divided into three, that can reach over 1.5m (5ft) in height. In autumn the fronds turn reddish-brown and die back to ground level, with new fronds unfurling from the base in spring.  

Why Is Bracken A Problem?

Bracken has thick, fleshy, brown-black underground stems that can travel long distances, often spreading into gardens from adjacent countryside.

Sections of these fleshy underground stems can be introduced to the garden hidden among the roots of plants acquired from infested gardens, or in home made compost or leaf mould.

In cool, woodland gardens, bracken may germinate from spores carried in on the wind. 

Bracken can out-compete desirable garden plants and invade bare soil, becoming a weed that is difficult to eradicate.

Bracken Toxicity:

Bracken should not be eaten, either by humans or livestock, since it contains carcinogens linked with oesophageal and stomach cancer. Eating the young fronds, considered a delicacy in Japan and parts of North America, is not recommended. 

The encroachment of bracken into grazing land reduces the area of useful farmland year by year since livestock cannot be allowed to eat it. 

People who have spent all their lives living amongst bracken and breathing in the spores may be at higher risk of getting some cancers, but the danger to the general population and to casual visitors in bracken-infested areas is negligible. 

People gathering bracken for composting or eradication purposes are advised not to do so in late summer when the spores are released, particularly in dry weather.

Control

We usually recommend using a bracken specific herbicide such as Asulox. The active ingredient, asulam, is translocated through the plant providing effective control of bracken. Asulox had originally been approved for aerial use only in 2020 however this restriction has now been eased. Subject to full approval, ground-based application will be re-instated on “land designated for conservation or that is covered by an agri-environment scheme”. Details and confirmation of these areas are to be firmed up in the coming days. For smaller applications we are recommending the use of Roundup weedkillers. Squire Ultra is a selective herbicide safe to clover and is a strong broad spectrum weedkiller.

For more information regarding bracken control, please get in touch with our sales team on 01522 246491.