Topic Tag: compost pH. high pH. compost high pH. Alkaline compost. Search for: Community › Community › Topic Tag: compost pH. high pH. compost high pH. Alkaline compost. Viewing topic 1 (of 1 total) Topic Voices Posts Freshness compost with high pH Started by: Janet in: Preparing the ground 3 4 5 years, 7 months ago Wellies Viewing topic 1 (of 1 total)