hi guys all my seeds germinate fine i then plant them in a jiffy pot full of moist potting soil with the root straight down into the soil cover them with a little soil and put under a 250w hps. after a couple of days and nothing i check them and the seeds have gone yellow to white and the root is shrivelled and dead... why do my seeds keep dying? please help!
There are several things you might have done wrong:
1) did you keep the soil moist or did you let it dry out? It's best to let it dry out and not keep it really moist because you've already germinated
2) was the pot really cold? i.e. put on a cold floor? It's best to keep the soil in this stage above 70F if possible, but not a complete killer
3) Did this potting soil have lots of nutrients in it burning the root system?
4) did you damage the tap root when placing it down in the soil?
5) did you put it to far down into the soil?
6) people say to put the tap root facing up not down(I've done it both ways and its worked either way), but there may be some validity depending on how deep it is.
7) bad beans?
HPS too close and penetrating the soil? You don't need any light until it actually breaks ground, and even then you can keep a 250watt HPS 2' above it seedling for the first week.
9) soil contaminated with something?
There are craptons of things that could have gone wrong