Having looked up to see what benefits either roses or parsley evidently tea leaves or open used tea bags are a good fertiliser , i don't know if they are good for all garden plants but evidently for the ones mentioned above.
Q; have you any good recommendations for garden fertilizers if so will you share them with us,
Coffee worked well on our Camelias.
Most tea bags have some plastic in them. I think PG tips is the one that is plastic free.
That's interesting Sheila.. I use PG Tips..