What is the gardening purpose of an l-shaped groove knife?
(credits to http://www.chillingtontoolsonline.com/groove-knife-p62 )
It appears to be a weeding or cultivation tool, a little-bit like a "wrong sided" billhook.
What is the gardening purpose of an l-shaped groove knife?
(credits to http://www.chillingtontoolsonline.com/groove-knife-p62 )
It appears to be a weeding or cultivation tool, a little-bit like a "wrong sided" billhook.
The picture in the link you provided is a big hint. This tool is for weed removal in crevices between hard surfaces, such as between pavers, sidewalk sections, railroad tie constructions, etc.
It's not designed for regular bed cultivation, and it isn't very efficient for that purpose.