The spiral can be a natural type that provides a competent way for managing space.

15 Factors a permaculture herb spiral lets you practice sustainable gardening in urban or country settings Whether you’re a city mouse or a nation mouse – – with a high-rise patio or 1000 acres – – building an herb spiral close to your kitchen enables you to partake in the sustainable permaculture revolution and have clean organic culinary herbs close at hand. An herb spiral is usually a compact vertical backyard built on specific principles allowing for individualized management of wind and drinking water flow to create the perfect garden in a limited amount of space http://suhagrastore.com/hair.html .