Yes, it's there again! The great smell of citrus flowers!

I took my plants inside by the beginning of october as night temperatures started to reach freezing. But now I'm seeing new growth and even flowers!
I'm not sure if that's a good or a bad thing, but it's there!

What I do not like is that all young little fruits from the summer flowering drop off. But I guess that must be normal, it happened last year also...

What's the temperature inside? Here the coldest place inside is probably 18°C...way too hot!

I think daytime temperature reaches 20°C at most on sunny days, but on average it wil be more like 16..17°C. Night temperatures will now be around 13°C I think. On very cold nights it may go down to maybe 7..8°C, but that hasn't happened yet this year...

How are you planning on reaching between 5 and 10°C ?

The plants are in an unheated veranda (light room). If the temperature is low enough outside, it will go down inside also.

There's a heater inside the verandathat kicks in when the temperature goes below 10°C, but it's never on during the night...

Above 10°C, that seems too high for dormancy I think?

They won't go in complete dormacy, but growth will be very slow. During the previous winter I frequently measured the size of some of the young fruits. The size kept increasing, but at times very slowly.

That would mean that every place on earth that can produce citrus outside, never has a day/night temperature that goes below 13°C ?

Evaldas it is not so precise. It depends on the vigor of the plant and much on the cultivar. The quats stop their groth very quickly but lemons and the papedas can go on to grow under 13°c.

I don't know about papedas, as I would never bother with them anyway, but the "growth" of citrus, lemons included, at or below 54.5F (13C), would be so minimal (if any growth at all) that in reality it is nothing. - Millet (429-)

To be more precise, they don't throw new growths at those temperatures but if they were new growths before the cold I noticed they go on growing. Slowly indeed!

What it shows is that 13°C is not a strict limit.
It is not: Higher the sap flows, lower the sap stops.

It is: When the temperature goes down the sap flow slows down.

I am not sure to be very clear...

Sylvain,
also the evidence of the rootstock is of major influence on this. But I agree: Sap does never stop. If this happens, the plant will die, because the column of water will break down, thus the osmotic system will fail and lead to a serious problem with the water system, or the sap system in Xylem and Ploem!