Most plants can’t make use of anywhere near the full intensity of summer sunlight. Perhaps you knew that, but I didn’t. Depending on the plant and the conditions, photosynthesis maxes out at as little as one-seventh or -eighth of the intensity of noon-day sunlight (at my latitude). Anything beyond that is wasted. Continue reading Post G24-019: Photosynthetic efficiency, or finally understanding the back-yard garden trellis.