White Widow AF just a problem, not worth it

out of 20 WWAF seeds, only 4 germinated, potted in 5 gallon and good soil may 1st, direct outdoor sunlight all day. these plants never reached a height of more than 1 foot, all produced white hairs 3 weeks ago, now look like they are budding, no growth spurt at all. Will never attempt autoflower again.