Yeah. As it turns out, the clones have no tap root,
This is just one opinion, rather well written, so I will borrow it.
http://www.thenorthwestleaf.com/pages/articles/post/seeds-vs-clones
The tap root holds it all down. Germinated seeds produce a tap root while clones produce what is known as a fiberous root system, when taken from a donor plant. A large tap root promotes strong vegetative growth, creating a stable plant. Larger plants have
relatively larger xylem and phloem size, allowing for more nutrient and water transportation to the leaves and buds during flowering, which will increase the harvest weight.
Plants grown from seed will slightly out-produce their clone when grown under identical conditions. More importantly, plants grown from seed have better pest and disease resistance compared with those grown from a clone.
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I've learned to get clones to a 3/4" stem base, in 8 weeks, by daily feeding.
A taproot would just add to that, but a tap root goes deep. So, if you have 4 foot deep containers, or deep tilled soil, or good draining rocky soil, seed is the way to go,
I won't be doing seed for that. I will just be adding strain variety, and then get the WW seeds going and begin a back cloning effort into the rotation.
At 8 weeks I can take a few clones before bloom begins.