When you say "those leaves start drying up," will all the leaves typically dry up? A lot of the Harvesting Guides I've looked at are all on such the microscopic level, so I don't really know what a plant generally looks like at this phase. I'm sure it varies a lot, but could you link me to any pics?

My two other plants have lots more green leaves, although due to another heat torture incident it looks like my Sativa is starting to drop it's fan leaves and curl the leaftips while the healthier Indica is starting to show brown spots... Not good!

I just want these babies to produce as much as I can. I got laid off from my job so I need this yield to last me as long as possible. Should I see no green at all on the leaves or how do I know when to pull the plug? Here's some buds on the other plants. You can tell by the pic how immature the sativa is compared to two Indicas.