Castine Blend Organic & Natural Raised Bed MixIn Store Location: @Garage Castine Blend Organic & Natural Raised Bed Mix is the ideal soil for raised bed organic gardening. It is carefully formulated to provide balance between structure, water retention, drainage and aeration for growing strong, vigorous vegetables, herbs and flowers in raised beds, planter boxes or other container gardens. It provides your garden the rich and diverse soil it needs.