How long does it take for locust thorns to decay?

Locust thorns, like other plant materials, can take varying amounts of time to decay depending on environmental conditions such as moisture, temperature, and microbial activity. Generally, it can take several months to a few years for locust thorns to decompose fully. In dry or arid conditions, the decay process may be slower compared to more humid environments. Additionally, factors like the thickness of the thorn and whether it is in contact with soil can also influence the rate of decomposition.