How do I know when to harvest?

Thread starter #1
I have four weed plants in the later flowering stages. Idk what strain the weed is I just found the seeds in weed I was smoking. I decided to plant them and learn as i went along and now they are almost done. Luckily they were all female plants. That being said idk if they ready. Here is a pic of just one plant.
 

Kingjoe83

Grow Journal of the Month - July 2017
Looking good man [emoji108][emoji108]

You will need Jewellery Loupe look for 60x with light attachment too [emoji848] eBay or any jewellery store around you is best I'm going to hit up mine this summer for sure buddy [emoji108]