Growing speed question

[VACSADX]

Hey guys!
First time grower here, I have 6 outdoor autoflower plants (got the seeds from bushdoctor in Vienna), just passed 28th day since germination. The larger ones (BCN Critical, 2xOG Kush) are around 30 cm, the smaller ones (Bubba's Gift, Jack Herer) somewhere 25 cm (~12 and 10 inch maybe). For a few days now they have a very nice smell from up close and in the last 8 days they almost doubled their size and I started to give a little bit of NPK. I guess they were a little stunted at the start, because we had some colder weather just when they went outdoor.
I have 5 weeks left of suitable weather, are we in time? Can I expect a decent harvest?
Any thoughts and advices are appreciated!

 

[Steviestash]

They look kinda small for 28 days and 5 weeks isn't very long I hate to say it but I think they will take longer then that or be very small

 

[Arthur]

I dont think your gonna make it... probably 6 weeks once you hit flower. Outdoor runs slower than indoor, by several weeks.

Will keep my fingers crossed!

 

[VACSADX]

They look kinda small for 28 days and 5 weeks isn't very long I hate to say it but I think they will take longer then that or be very small

Yeah I thought something like that... not the summer weather I expected, not much light or warmth. Maybe I have 6 more weeks, but sadly can't take them indoor, have to work with what I got.
What is the lowest night temperature they can left outside? 6 weeks from now it will go below around 13C, I believe that's too cold?

 

[Arthur]

For comparison, started July first, shes just hitting preflower, by the numbers she should be down first week of September, she'll probably go to mid month at least. That's 6 weeks from now.

 

[Arthur]

Yeah I thought something like that... not the summer weather I expected, not much light or warmth. Maybe I have 6 more weeks, but sadly can't take them indoor, have to work with what I got.
What is the lowest night temperature they can left outside? 6 weeks from now it will go below around 13C, I believe that's too cold?

Are you above ground or in pots? If your in the ground you can run longer as it will hold temps overnight better than pots.

 

[VACSADX]

Are you above ground or in pots? If your in the ground you can run longer as it will hold temps overnight better than pots.

They are in pots, but maybe I can build a foil tent.

 

[Arthur]

Or... I did this in the spring this year... worked like a champ.

Right about 100$ I believe. 4x8, open on the bottom.

 

[Steviestash]

15 degree probably the lowest you want but I find most plants are survivors lol

 

[420Forever]

Or... I did this in the spring this year... worked like a champ.

Right about 100$ I believe. 4x8, open on the bottom.View attachment 1086952

wow, that'z really cool! ppp