Hi. I've bought an eustis limequat a month ago and I checked the roots and there's quite a lot of them, it's definitely time to repot, but what's stopping me now is that the tree is producing blooms (they aren't open yet) and some new branches (they're still pretty small - ~1.5cm). Obviously I would have to spread out the roots and take off some of the substrate so the roots will definitely be disturbed. Previously when I replanted flushing trees, their growth would freeze, but I don't know about the blooms.
Here's a picture of the root system:

Also, the tree is in a house with an average low temperature (about 14C - it gets sometimes to 24C then drops to 12C etc, cool enough have caused bloom production). I have observed same trees at the store later where it's much warmer and their new growth is far more ahead than on my tree. So it looks like it could take a while for the tree to stop growing the leaves...
Or is it the lack of space that's stopping the tree from growing?
What should I do?

Resume:
Change of location is a shock for any tree.
A month passed and the tree seems to be acclimated to new location/conditions and have entered bloom/growth cycle.
What I would do?
Wait for cycle to finish and repot than.
More precisely, bloom/growth takes a month and is followed by root growth which also takes a month. Good time to repot is just before root growth starts.

I always repot a new plant immediately, regardless of what growth stage it is in.

My valencia tree for instance was flushing out with lots of new growth and flower buds when it arrived. I took the plant out of the pot and sprayed the root ball with the hose until most of the soil was gone. Then I put the root ball in a new, larger pot and carefully filled it up with new soil. After the repotting I watered the plant thoroughly and let the excess water drain away.

This action hasn't caused any damage to the new growth.

transplanting trees in such stages is always sort of chancy, prone to reckless decisions... i mean, it's always a double edged sward!
although, i would agree with ivica stating that you should perhaps leave the tree intact for a while.
let it have an uninterrupted flush cycle, afterwards, the tree should be transplanted without a hitch.

such an approach is the least disturbing for you as well as for your tree.

good luck,
igor

I agree, but in my experience replacing a plant from inside to outside or vice versa causes more problems than carefully repotting a plant.

Well, but the new flush is growing very slowly, in about three weeks the new branches grew from 0 to only 15 mm (it should've been close to finished by this time)
And I also don't believe in citrus acclimatization and I especially don't believe that you should instantaneously remove all the fruits as the Russians say in their forums. They also say that a citrus plant takes ~6 months to acclimate. A new person comes to a forum for help, having bought a beautiful citrus plant, then a forum "expert" says "you have to remove all the fruit, you have do this, that" (and it's not like they're just suggesting, it's like they're giving orders). So the new person does this and that and then three months later you see a picture of a bald, dead citrus plant that used to be very nice... Sad but also funny in a way.
I've bought many citrus and they never show any signs of stress, no leaf drop no nothing. I don't remove the fruit. And they start growing almost immediately. I also can bring my trees every day inside, then outside, change their location from one windowsill to another and they also don't react in any negative way...
But I can't repot without stopping a new growth flush

I always thought that summer was the best repotting time.

I guess over the yeas, I probably repotted citrus in just about every month of the year. The beauty of repotting trees that were grown in Air Root Pruning Containers is that there is never any circling roots to worry about - none.. Normally, there are so many lateral roots, that very little to no medium falls when the tree is pulled from the container. All one has to do is set the tree into a larger container and fill in the empty space with additional medium. Therefore, an Air Root Pruned container tree, can be transplanted when in flower, in fruit, in Spring, in Winter or Summer, without the slightest concern.. - Millet (277 BO-)

Evaldaz, I always hesitate advising anyone with a recommendation when it comes to transplanting a container citrus tree, because if the tree is damaged the person giving the advice is normally blamed. Personally, I don't think the time of year, nor the present growth that the tree is in, has much to do whether a tree should be transplanted or not. When a transplanted tree has problems shortly after being transplanted, it is because the tree's root system has experienced damaged in some manner. I offer no advice, I can only say if it was my tree and I thought it required transplanting I would transplant it without regard to the tree's present growth cycle. That being said, if the tree was in full bloom, I probably would wait a week or two for the blooming to be completed, and than transplant. - Millet (276 Bo-)

Ok, thanks then . I think I'm going to repot it now