I love gardening. Taking care of plants has been my passion ever since I was a little girl; it all started somewhere along those lovely spring days when my grandma needed my help. Being such a nature lover, she taught me so many things with so little effort. If I recall correctly, her famous DIY organic weed killer (made from water and vinegar) was the first thing I learned from her. She used it ferociously and almost ritually to spray all unwanted weeds in our yard.
These days with the horticulture evolution, we can enjoy the use of some other types of organic herbicides which are usually sold in any renowned online nursery. But, what in fact is the purpose of organic herbicides? How do they work?
Compared to a synthetically created one, an organic herbicide is far less toxic and it breaks down with the speed of the light with almost none residual effect. These herbicides gained popularity because of their environmental and health benefits, however, you should know that their “wonders” may not work on every weed and usually their results are temporary, meaning that reapplication is required.
By choosing an organic herbicide you will be able to control any type of weed when still small, meaning that organic herbicides are less effective on older plants. However, except the weed size, the effectiveness of these organic weed killers also depend on the type of weed you want to kill and the weather as well. Older weeds require multiple dosing cause even though their leaves die, the plant will rapidly re-grow from its undamaged roots. In the light of these facts, for best results, you should apply herbicides to young weeds when there is plenty of sun and to the older ones, twice more. Using organic herbicides may not be the best option for getting rid of weeds forever, however, it is the safest one, so anyone who cares for the environment and for people’s health should opt for them.
Regarding which type of organic herbicide to use, there are several choices regarding both selective and non-selective weed control.
The non-selective herbicides kills anything it gets in touch with them, which means they are designed to control broadleaf and grass weeds. The most common types are herbicidal soap, glyphosate, paraquat, ammonium nonanoate, citrus and clove oil.
The selective organic herbicides can kill broadleaf weeds but not the grass. They are extremely toxic only for certain types of plant species and less toxic for others. When it comes to selective herbicides, you can choose between chelated iron, 2,4-D, etc.