manure in new heather bed
I am planning a big heather bed....replacing my south facing, gently sloping, horrible weedy lawn in heavy soil with a gorgeous new heather garden. I have about 50 various heathers in gallon pots I bought at a wonderful little heather nursery (Glen-Mar Heathers) here in Humboldt county, northern coast of California, heathers do great here. I bought the plants about a year ago, re-potted and have taken really good care of them.
My question is: I was told not to use manure in the heather beds, why, i'm not sure. I have scoured all the heather websites, and they never mention NOT using manure, but they don't say TO use it. As mentioned, I have very poor soil (we bought this place about 2 years ago). I have prepared many garden beds in the past by the "sheet composting" or "lasagne" gardening method, letting manure, compost and worms do the work for me. Why not for heathers? I live near a horse stable where I can get all the manure I could possibly want...it is mixed with straw, hay, sawdust. With that, and leaves,etc, I figured I could make some decent soil.
My plan is to prepare the soil over the fall and probably buy some topsoil to make mounds, add some landscape rocks,etc then next spring i'll install a drip watering system and plant.
I know heathers don't like a rich soil, but I'm starting with horrible soil, and with the manure, etc, it will better, but not "great" soil.
does this sound reasonable?