The greenhouses went up March 29. That's when I reported my fail with the Vince #3 in the ground under the barrel. Temps have been kept at minimum 16C. The electricity bill is likely be the subject of some conversation. I have two, 1500w heaters in each. One set for 10C and the other for 16C. Thank goodness I beefed up the electrical all around when i moved in to handle heavy loads. I have a habit of working systems, hard.
I'm still looking at and experimenting with methods that might yield better results
16C min is impressive, I bet the figs love it... Thanks for posting this info. I like reading specifics like this, I find them very helpful...
Let me post my experience this season, hope you will find some helpful bits as well...
Mine started to break bud in the garage on March 29 - March 30, with the exception of RDB and Crozes, which broke bud on April 15th in the makeshift greenhouse. My make-shift greenhouse went up on April 8 and the trees went out of the garage for the first time on the 8th.... it was too cold before then as I have no heating in there...
Here is my RDB, which stayed outside all the time since April 8, with the exception of 2 nights when we had night lows touching 0 °C. No heating at night. Daytime temps ranged from 8-10C to 34C, depending on the sun and ambient temps.
My other trees that broke bud at the end of March are quite a bit further along... Here is my Smith... I tied the branches together a little as was too wide on the hand truck... it's a jungle now...
I see some tiny bumps this morning... looks like we are 3-5 days from pea-sized figlets...
Other trees are more or less similar...
Here is my HDA...
So, these trees go back to the garage every night, with the exception of 5-6 nights when lows were at 8C or above. The heat from the lights in the grow tent in the garage keep the temps in the otherwise unheated garage at about 16-20C at night, depending on ambient temps.
Here are a couple of quick observations I made while comparing our results that may be helpful to you....
1 - if you can somehow apply heat to your trees in the garage to wake them by April 1, that will buy you at least two weeks.
2 - your trees seem at roughly the same development stage as my RDB, no?... and I give it no heat at night... only took it inside for 2 very cold nights... hm... that's interesting... I am sure we need more experimenting here but it really makes me wonder...
I am thinking about insulating my GH a little next year... I want to make it double-walled... that way I can run a little heater in it when night temps drop below 6C or so, otherwise let them be as is... I think they will be just fine...
How are your daytime temps in the GH? It's nice and sunny today... the ambient temp is 9C, 31C in the GH.