seeds ive ran the "stronger" looking of the bunch is always male. thicker stem, larger leaves. my males just seemed to grow faster too.
had a seed get stunted at about 6 inches for 2 weeks straight, thought it wasnt gonna live. fell far behind the rest of the seeds. which reached double its size.
but then it boomed. within a week or 2. it was the 2nd tallest plant.
but a male... bummer.