How to control the invasion of small clover like weeds in my vegetable garden

(Question)

This  year, my garden is simply covered in tiny clover-like weeds with shallow roots. They are easy to pull out but what are they and is there a better way of dealing with them?

(Answer)

You are right, 2014 has been a bumper year for the common Yellow Wood Sorrel (Oxalis stricta), which is the weed you describe. Diligence in pulling or hoeing them out is vital, because quickly after the bright yellow flowers appear, they go to seed and next year will be even worse. Some people have reported that horticultural vinegar kills them but that is difficult to apply between your vegetable plants. A loop hoe will be easier on your back than hand pulling.

Once you have the soil cleaned of weeds, put down a good thick layer of mulch, such as grass clippings, shredded leaves or compost.

For more information, see:

https://www.omafra.gov.on.ca/english/crops/facts/ontweeds/commonyel_woodsorrel.htm