In most modern examples of Three Sisters planting, the three vegetables are planted in a circle formation to ... with the three plants – corn, beans and squash – supporting and being supported ...
A method using free software and a drone with a low-cost camera has made it possible to select drought-tolerant corn plants.
The physical structure of corn plants — including the angle of leaves bending from the stem and the number of pollen-laden tassel branches — makes a big difference for yield.