Apply self regulation & accept feedback: We need to discourage inappropriate activity to ensure that systems can continue to function well.
A self regulating system has the ability to look after itself and is the ideal in permaculture design. This design is seen in forest gardens, in which work is minimised by planting ground covers to reduce weeds, nitrogen fixers to replace fertilisers and perennial and self-seeding plants to reduce annual plantings.
Planting and designing your garden in this manner mimics nature. You are creating an eco-system in your own back yard. When you work WITH nature and not AGAINST it, all of a sudden gardening becomes so much easier and instead of seeing problems, you start seeing healthy, natural solutions.
I have applied this principle in my garden underneath my apple trees. I have planted several herbacaous ground covers to minize weeds from popping up. I have also planted Nasturtiums to keep the moisture in the soil and the weeds out. They also function as a pest deterrent. They happen to be a great companion plant for apple trees. And they are delicious in a salad!