What Type Of Weedkiller Do I Need? FAQs

For Nathan James Dodd eradicating garden weeds seems like an endless task, but a necessary one that needs to be done in the most efficient way with least harm to the environment.

Created by Nathan James Dodd on Wednesday, 26th of August, 2015.


We regularly provide advice on this subject and here are your most frequently asked questions:

How Do Systemic Weedkillers Work?

After applying systemic weedkiller to the plant's leaves, it travels through the plant and into the roots. Although slower to take effect than contact weedkillers, a systemic weedkiller works by restricting the plant's ability to transport water and nutrients until the plant dies. 

What Is A Contact Weedkiller?

Contact weedkillers only kill the parts of the plant they come into contact with, ie the leaves and stem above ground level. You may have to re-apply several times, as the weedkiller won't penetrate the plant's roots. 

Which Weedkiller Should I Choose?

Systemic weedkillers will kill most weeds but are best used to eliminate perennial weeds with long roots such as dandelions. Contact weedkillers are excellent to deal with annual weeds.

What Is A Selective Weedkiller?

Selective weedkillers are formulated to kill only particular weeds, mostly broadleaf which are often shaped like rosettes and found in lawns. 

And Non-Selective Weedkillers?

These are also called 'broad spectrum' herbicides and kill practically every plant they come into contact with. 

Where Do I Use These Weedkillers?

Selective weedkillers are most useful on lawns as they will kill broadleaf weeds but do not affect the grass. Use non-selective weedkillers on large areas that need to be cleared, drives and paths.

Is There An Organic Alternative?

There are products such as vinegar and rock salt that provide an alternative, and many well known manufacturers are introducing organic products to augment their chemical based range.

For more information on organic weedkillers see our blog on 'Can Weedkillers Be Organic'. 

 

 

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