How many weeks of veg time are considered when calculating yield/area in the seed description ? For example if the yield says 2-3 oz per sq ft, how long in veg time for that yield ?
That would depend if it’s an autoflower or a photo.
An autoflower typically lasts 4 weeks in the vegetation stage until they start to preflower
Photo’s stay in the vegetation stage until you flip the lights to 12 and 12
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As to how many ounces per square foot. I believe this is subject to many different aspects of the grow itself. I believe that figure is more of a marketing statement than anything. (My opinion)
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Breeders estimates are notoriously inaccurate and assume an ideal growing environment and a professional grower. Growers’ individual environments vary widely as well, particularly among newer growers. There is, unfortunately, no way to make a valid estimate from breeder estimates.
Yield will of course go up with longer veg times.
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I concur.
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Okay, maybe I should’ve asked "When do they suggest you flip to 12/12 ?
My basement ceiling is just over 6 ft, so I usually flip after a couple of weeks. I’ve even started some runs at 12/12. Knowing, of course, the less time in veg means less yield.
Your constraint then is height. Keep in mind that a plant can double in size during the first 4 to 5 weeks of flowering.
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Yep. Also, back in the 80s when I first started indoors, I used 1000w Metal Halide & an 840 HPS for flowering. Expensive electricity & meter spikes were also constraints. I don’t think I’ve ever gone more that 4 weeks in veg. Big fan of Ed Rosenthal back then.
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