when will the males show outside

i live in toronto on canada.... i planted some plants near my cottage in northern ontario about 1h nort-west of sudbury. since its like a 5 and a 1/2 hour drive i need i good guess when to make a trip up to pull any males.
they were planted june 12 and they were about 10 inches tall..... there are 3 diff strains purple white widow, durban poison, hollands hope

i would like as meny educated guesses as possible to reach a good time...
thanx

When the daylight is about 13-14 hrs, check the sunrise/sunset times on the net

End of July.

Yea end of july sounds about right

yeah, you definetly need to check the amount of sun that it is getting. The cannabis plant automatically controls its own flowering by calculating the alteration in the number of hours of daylight and the uninterrupted darkness at night. Most mature plants will be begin flowering when the photoperiod changes to 12/12, however the photoperiord is genetic with the type of plant you are growing. Talk to the seedbank you got your stuff from for any further info on the strains, (good choices btw.) Hopefully that gives you a good estimate of when to return to your patch.