hello. this year is my first time planting. Here are my girls. I wonder what your opinion is? how much longer? one is an autoflower and the other is unknown. I'm worried I'll know how to estimate the harvest time. If anyone has advice I will be grateful.
Most folks agree that it is best to harvest based on the colour of the trichs. You'll probably want to get a magnifying glass, or a jeweler's loupe to be able to see them clearly. I got an inexpensive microscope that I like a lot. It wasn't very expensive - $35 or so. There is an article in my signature describing when to harvest based on the effect you want to experience.
Here's what the trichs look like under the microscope from my last harvest. Hope this helps.
Welcome. Mid-october would be my guess. Looks like you may have critters(white spots on leaves). Get a jeweler's loupe/magnifying camera and look under the leaves. I'd spray them with neem now in low light, under the leaves especially. I don't spray neem within 4 weeks of harvest.