This is my first weird grow in 1 gallon pot
This is how I used to grow in 1 gallon pot
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I used the same fertilizer for years. Just added endomycorrhizae in my last few grows. Have some minor adjustments in my grow style. Otherwise, everything is the same. In fact I've just feed these plants 5 times since sprout at 1/4 dose of Lucas Formula.
It could be genetics and heterosis. Only way to find out is repeat my process using different strain.
Here's a sample of roots coming out of the pots
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These are huge roots, not those fine root hairs.