@evilpaul This is a neighbor’s tree growing in Washington DC. Survived several polar vortexes unharmed. it has to be 30+ years old. Trifoliate official hardiness is Zone 5
The flavonoid that interacts with medication is Bergamottin. largely found in bergamont orange the one used to flavor earl gray tea, but also in grapefruits and pomelos.
All Things Cold Hardy Citrus, news, thoughts and evaluations - General Fruit Growing - Growing Fruit
I personally like syrup made from the fruit. Diluted you get a juice simular to Yuzu or Calamansi