What specific light level is demanded for Panicum virgatum to perform best and show true colors?
Answer
Full sun
The performance and visual characteristics of Switchgrass are highly dependent on receiving adequate solar energy. To achieve its best growth habit—upright stems and strong structure—and to develop its characteristic summer and fall coloration (blue-green, red, or purple hues), the plant absolutely requires full sun exposure. Insufficient light levels directly compromise these attributes, often resulting in floppy or weak stems that fail to support the foliage and panicles properly. Furthermore, the seasonal color transitions that make the species popular in landscaping are muted or entirely absent when the plant is grown in inadequate light conditions.
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