Yes, you can clone a marijuana plant at any stage.
Can you clone an auto flowering plant?
Yes you can clone an auto flower. But the plant will not grow that big
because its flowering already when you clone it. It will not grow in
vegetative stage. I recommend you do not clone auto flowers.
If you want more auto flowering plants, i recommended you
make seeds with a male and female. I had PURPLE GEMS auto flowers
and made like 200 seeds with two plants. This is your best option
for making more auto flower plants.
Can you clone a marijuana clone?
Yes you can clone a marijuana clone.
First you take a cutting about 2-3 inches long for the clone.
Then you slowly and gently slice off a small piece of the side at an angle. Cut at the bottom of the clone stem.
Then you dip your cutting in clone powder or clone gel. I recommend clone powder its much faster and higher success rate. I like to use Schultz TakeRoot Cloning Powder.
Place your clone in your soil or hydroton. Make sure the clone is nice and moist but not soaking wet.
Place your clone in a Humidity Dome Green House. Then place a 23 watt CFL light right over it for 18 hour days or 24 hours.
Be sure that the clone never drys out, make sure it stays moist and not soaked. You can buy a heat mat for about $25 and place it under the clone green house and it will increase the speed of rooting. Open the green house once per day for at least 7 days. Check for roots and then plant into your flower pot. Cloning a plant is not very difficult. You should get the hang of it fast. If your clones are around 90-100% success rate then your doing good. If any clones die and do not root please make sure your doing it all correctly. Never leave the clone soaked in water, just nice and moist. Make sure your using a greenhouse to hold in the humidity. A 23 watt cfl is all you need for clones. 18-24 hours per day on a timer.