Tea leaves accumulate heavy metals. what are the implications for composting?
Tea (Camelia sinensis) accumulates heavy metals from soil. This is a known risk when buying cheap tea. Steeping tea leaves also removes heavy metals from water. These facts regularly get brought up esp. in discussions about eating tea leaves, which is a tradition in some East Asian cuisines and a habit that other people have picked up.
This begs the question how safe it is in compost.
I've found publications that consider tea waste's potential phytotoxicity, but not heavy-metal contamination.