Westland John Innes No. 1 Young Plant Compost Gives young plants the best start in life. It develops stronger roots & feeds for 4 weeks with specially balanced nutrients. This compost is a loam based compost which is a naturally reduced peat mix, is specifically designed to establish young seedlings & plants. The high loam content acts as a buffer for nutrients & it's a heavy compost so it will stabilise small pots & containers.