What is the longest marijuana seeds can take to germinate?

[latewood]

4-7 days is the norm but I've had some that take as long as 2 weeks, Potent Purple in particular. Then when they do break the surface they usually need to have their "seed caps" manually removed. Longer germ times are usually the result of cooler temps but some seeds have exteriors that are just too hard to open in the normal time and take longer to soften up enough to break out.

NONO...
This statement below is total BS:
"Then when they do break the surface they usually need to have their "seed caps" manually removed."


Never touch the husk on the cotyledon.