HOW TO GET RID OF BIRD'S FOOT TREFOIL IN LAWNS

 bird's foot trefoil Lotus corniculatus flowers and leaves
How to get rid of the bird's-foot trefoil - Lotus corniculatus

Although rarely seen in a well managed garden, the bird's-foot trefoil - Lotus corniculatus, is a surprising attractive specimen as far as lawn weeds go. Its exotic, eye-catching blooms are in part due to its origins in the grasslands in temperate Eurasia and North Africa and its classification within the family Fabaceae.

 bird's foot trefoil Lotus corniculatus flowers and leaves
How to get rid of the bird's-foot trefoil - Lotus corniculatus
As a lawn weed, it is conspicuous in bloom and will develop an extremely prostrate habit when mowed. This means that it has a change to establish relatively unnoticed before its flowering season. Furthermore, it is better equipped to cope with poor soils enabling it to easy outcompeted with the grass if the nutrient levels are not improved.This is because (like most species within the family Fabaceae it has the ability to fix nitrogen using specialist bacterial in its root system.

It characteristically grows in grassy places in full sun and well-drained soils although is deep, branched root system will tolerate both wet and moderately dry conditions. It performs particularly well in poor, low nutrient soils, and in particular lawns which are not routinely fed and/or have the clippings removed when mowed. It is also tolerant of poor drainage and soil salinity

Note. In warmer climates where summer temperatures are regularly over 24 degrees Celsius Lotus corniculatus can become susceptible to fungal diseases.

Organic control of the bird's-foot trefoil - Lotus corniculatus

Your best and only organic control option is to dig out the plant and root system by hand. Be aware that the bird's-foot trefoil can prove to be particularly invasive and all attempts to remove it must be thorough or it will simply grow back. At the very least, scarify your lawn in the autumn with a spring-time rake in order to help your grass compete against the bird's-foot trefoil.

Chemical control of the bird's-foot trefoil - Lotus corniculatus

The bird's-foot trefoil is known to be intolerant of high levels of nitrogen so a twice yearly application of lawn food will help to keep your lawn from being out-competed by it. However to fully eradicate it you will need to apply a selective broadleaved weedkiller. You can purchase products such as Resolva lawn weedkiller concentrate by Westland from your local garden centre.

If you have the appropriate herbicide spray certificates you can consider Tritox, Intrepid 2, Greenor, Bastion T, Dormone or Supertox 30.

Main image credit - Simon Eade gardenofeaden@gmail.com
In text image credit - FredrikL√§hnn public domain

For related articles click onto the following links:
HOW TO GET RID OF BIRD'S FOOT TREFOIL IN LAWNS
WHY SCARIFY A LAWN

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