@DeadwebsiteBoringcommunity, good question. The manufacturer gives a spectral graph and a light count. They specify the ratio as 53.4% Red, 36.9% blue, 9.7% green. I don't think its short because of a lack of blue spectrum. CKS says this is a dwarf strain, and I began training it (first with LST) at 5". Then I super cropped everything but fan branches later and topped it (accidentally). So I think its short mostly because of genetics and because daily plant training has kept it short.
Also, the HST really seemed to put the breaks on growth and the plant seemed to put its energy elsewhere as every time it got an inch or two of fresh growth somewhere during the first week of the stretch, I super cropped and then LST'd.
And this week, despite plans just to LST, I'm still super-cropping to control height, as it can work better than just LST (I'm using both). So I think its genetics and training.
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