Harvest?

Do you not have a diary for this grow? First of all, you're going to have to get a really close look at the trichomes - so pick up a jewelers loupe at the very least (they're pretty inexpensive). You're going to want to see the trichs on the bud itself (not the leaf) starting to turn amber and then you'll know it's time. Judging from the one pic that isn't purple, though, your plant hasn't even started to fade so you've got quite a while yet to go.... Now, having nothing to do with anything, I'm wondering why it is you're not watering these ladies thoroughly... half the pot is dry! Roots need water and these roots are massive things.... for your next grow, you should be getting 10-20% runoff every time you water, especially in flower! I want you to go take a look at the root system of one of my plants... I grow in DWC and had to do a bucket change so I took a video... This lady was in her first week of flowering... growdiaries.com/diaries/154058-grow-journal-by-growinggrannie/week/864034 Be kind to your plants... water them thoroughly and then let them dry out before giving them anything else! Cheers!