Perhaps you don't have it over there but here in the UK can buy it in bags like other compost. It's made for plants like azaleas, rhododendrons and blueberries.
Ericeacous compost is made for azaleas, rhododendron and blueberry plants. Perhaps you don't have it over there but here in the UK can buy it in bags like other composts. I'd be careful with horse manure make sure that it's well rotted and don't get it on the crown of the plant. I'd buy a fertiliser that's right for those sort of plants.
