When we had them out the front where it was super dry and nutrient poor, they never did well at all. Now they're in a place where they get more water, and the soil's a bit better, plus some sunlight. So from experimenting, I wouldn't say acidic (I guess I could do a soil test for you) but water and nutrients. I just read online for you - they say 6 - 8 hours of sun, neutral to slightly acidic, mulch but not waterlogged.