sexing

My plants are about 2 to 3 feet tall, been in vegetation for 2 months, i want to start flowering this week, march 27, but i am going away on April 6 til April 15. A friend is going to water them. I am worried that the males will pollinate the females when i am away. My question is, how long...

Hello... so, yeah... despite the ridiculous amount of research I've done, I'm 35 days in and suffering from I guess a typical case of "omg wtf?!" ... so, wondering if anyone can help me tell the sex of these ladies (hopefully)... heh, I apologize for the noise in the photos... I'm actually a...

I am currently at week 5 from seed. Plants range from 6-9". Starting to get secondary leaves/branching off of leaves from main stem. Lighting at 18/6 using Fox Farm nutes. Planning to flower starting 1st week of January. When can I sex my plants? After I start flower light cycle? When should I...