Natural/Organic inputs are those substances that occur in nature, as in plants, animals, or minerals. Moreover, these products are either naturally occurring or prepared via biological processes. You can think of manure or compost being the best example of organic inputs.

Gardening requires physical exertion, including lots of bending, stooping, digging and carrying. The repeated gardening actions put strain on your back and joints like your knees. If you already have problems with pain or limited mobility, taking care of your garden can worsen those symptoms.