Corn, Bean & Squash Polyculture and Nutrition
A Three Sisters Garden is an agricultural method of the Indigenous peoples of Turtle Island. It uses polyculture - growing more than one crop in the same plot to good advantage. The three sisters, ‘corn, bean and squash’, are planted together and the combination of plants helps each of them to produce fully.
Corn has a high need for nitrogen, and beans produce a high amount of nitrogen. · Climbing beans need something to climb and a corn stalk is a great natural trellis. · Squash plants spread and provide a natural weed cover and moisture-retaining shade for the other plants.
The three plants are also a nutrition powerhouse when combined. Corn contains carbohydrate, providing a rich source of energy while beans provide protein and fibre to help balance the release of sugar into the bloodstream, keeping us fuller for longer. The squash is full of nutrients, such as vitamin A that helps to maintain good eye health. Fibre helps keep us regular, lower bad cholesterol and prevent overeating due to its role in helping us to feel full.