Autoflower - Best for cold

I can recommend Doctor's Choice. I normally start in March with the first Autoflower Season outdoors. They remain in the greenhouse but Temps crack down to approx. 5°C. Everything will slow down and you will have to add some more weeks before you can harvest.. I'm through with the first crop of the year after around 15 weeks from seed to harvest.. Good luck Mate🤘

Soil temperature will have a big impact on growth. Bringing the plant inside at night would be the best option especially since you don't have to worry about light contamination with autos. You can also get a seed starting heat mat to wrap around the pot. You can also wrap or insulate your pot with the heater inside to help keep the soil warm during the colder periods.

Hi as organoman said there is no specific autoflower strain bread specifically for cold climates but most autoflower will handle cold temps because of the genetic makeup. As grannie has posted fastbuds have some they feel would work well in cold climates. 9c is also where I think the plants would struggle, you may need to come up with a way of keeping them warm at night.

The 9C worries me.... the 14C isn't particularly of concern... but yes, they DO have varieties for colder temperatures - FastBuds, for example, has a filter that lets you choose seeds for different climates.... and they have an amazing array... https://2fast4buds.com/autoflowering-cannabis-seeds/colder-climate - just take your pick! Good luck!

Any you choose will be ok, there are no specific "cold tolerant" autoflower varieties that I am aware of.