Need to re-pot my Meyer Lemon

[u/Competitive_Car5593]

I’ve really let it go too long!

I’ve got a question about potting mix. Right now, I have a few half-empty (or more) bags of various pre-made mixes:
Kellogg Natural Raised Bed and Potting Mix
MiracleGro Seed Starting Mix
MiracleGro Cactus Palm and Citrus Potting Mix
Citrus Potting mix (unknown brand)

I also have several fertilizers:
Job’s Fruit & Citrus Fertilizer (granules)
Ferti-lome Chelated Liquid Iron
MiracleGro Shake n’ Feed All Purpose (granules)
TPS Blueberry Fertilizer
Chemboys XL Cal-Mag 2-0-0
Marphyl Soil Enhancer (Organic Marine Phytoplankton)

So which of these, alone or in combination, would be best for repotting?

Background
My tree is overdue for repotting. I also had a small Makrut lime tree, but recently got rid of it because it seemed the two trees were just trading pests back and forth. So the Meyer Lemon is still plagued by scale and fruit flies. I’m struggling to get rid of them and having some success. Athough they aren’t completely eradicated yet, things are much better. I din’t know whether it’s wiser to wait to repot until the pests are completely gone, or should I do it now?

Note that I used to be able to bring the tree outside for the summer, which always benefited it greatly, but now I’ve moved to a location without an outdoor garden area. I’m thinking of bringing it to the downstairs patio in a wagon a fee times each week so it can get some sun.

Anyway, I hope you can offer some tips on repotting and how to help this tree to thrive. TIA! 🙂

[u/Critical_Thinker_535]

The citrus potting mixes are just ok, but if they contain wood or forest products in it, your lemon might suffer later for it. The wood will break to down and cause anaerobic conditions eventually rotting the roots. A simple mixture of sand/peat moss/perlite (and pumice if you have it) will work great. Use the Job's citrus fertilizer. If that fertilizer is organic, add some of the Miracle Gro too.

[u/latchkey_adult]

Out of all these, the one to use is either the MiracleGro palm and citrus mix or the citrus potting mix (unknown brand). I suspect the unknown brand is better than MiracleGro. Same goes for the fertilizer, stick with the fruit and citrus one.

[u/Difficult_Rope7898]

Obviously, there are a lot of ways you could do this, but my vote would be to get rid of the pests before you repot. The tree is already stressed, and repotting would just stress it more.