Advice please.

A better way than using a bigger pot? Not sure what you meant by that, sorry. Five years is a long time to go without a change of soil. When you moved your plant to the bigger pot, did you remove any of the old soil? Were the roots in a solid circle around the bottom?

I used to do the tea thing too. You may feel differently after reading this discussion.

Not ignoring your other questions, just not areas I feel qualified to delve into regarding your particular plant.

Repotting was necessary, but your Azalea would do better in plastic.
The difference is, you 'might' have to water more.

Azaleas need acidic soil..what did you pot in?

Clip off dead flowers and branches. Can you summer your Azalea outside? If so, set in a shady spot. Keep out until first frost.
Indoor/Florist Azaleas are hardier than most people think. They can endure temps as low as 35-40F. By then, new buds should form.
Once Azalea is brought back in the house, place in a bright, cool room. First frost and cool, brightness keep buds from dropping.

If you haven't outdoor access, place in a bright, 'east window is ideal,' no-direct sun, cool room. High temps can invite Spider Mites, growth is etoliated, and sometimes detains, if not halts flowering.

Oh, add fertilizer for acid-loving plants. Follow directions on package. Actually fertililzing three-times a year, during growing season is best.

This is optional. Apply Iron Chelate or Iron Sulfate every 4-months.
If water is too alkaline, leaves develop chlorosis. Meaning, color pales to light green w/dark veins.

I had an Azalea a little over 10-years until it tired and died. Every autumn it'd bud, then flower well into March.

Congrats, on your 5-Year Azalea...Toni

I used peat moss and a little compost. Is there anything else mixed with this? If not, that's a recipe for disaster, a mucky, muddy mess with no air in it that can't get wet again if it gets really dry.

Feels like a good point to paste some of Al's roots instructions but don't want to be inappropriate and/or choose which of his words to put "in his mouth" without any experience trying to grow an Azalea in a pot personally.

I too added Peat to the soil. It helps w/acidity.

Yep, I agree..too much or too little water will kill an Azalea. Although, during winter, I kept my plant in a large trey with stones and water..the water sometimes hit the bottom of pot. Even for a day or two. However, I kept a light on, above the Azalea, about 5 hours each night, so soil dried faster.

About repotting. How tight are roots? If your Azalea is completely rootbound, to the point water runs through and you're watering daily, maybe you should repot.
In a container one-size larger.
Azaleas bloom more when roots are tight-fitting.

About sulfur. If the soil is too acidic, your Azalea will look better but can grow slower. They're not the fastest growers to begin with. Well, they might grow a little faster in your location??
Do you have a pH guage? If so, check soil pH. If it's 6.5 or higher add a little sulfur, but be careful w/the amount you add. Too much and goodbye plant.
Using sulfer w/outdoor/in-ground Azaleas is safe, but using in potted plants, well, I'd be careful. \

Instead why not mix Orchid soil to your regular Peaty mix?

I miss my Azalea. It was inevitble flowers would show each year.
If I see a standard or braided Azalea locally, I'd like to get one. At a reasonable price of course. lol

Teen...Wow, a bottle of vinegar. The amount is enough to kill any plant, lol.
Sorry about your Azalea, they're lovely plants.
Hope you told your mom not to water anymore??? :)

Do you keep a bottle of vinegar near your plants? If so, you should label the bottle.
I do this w/spray bottles and water containers. One has vinegar, the other Rubbing Alcohol, a third has home-made insecticide. Those not marked are used to mist or water regularly.

Toni

Orchid bark will decrease pH a little.
Before adding sulfur check pH. Too low/acidic might do more harm than good.

Yep, it's always surprising when certain plants over-winter well indoors. Like your Azalea. Especially, when they re-bloom.

Every so often big-box stores lower Standards' costs, but by that time, plants are half-dead.
Home Depot had beautiful Azalea standards with and without braids..they wanted 29.99. No way! Evenutally the price dropped to 17.99..you should have seen these poor Azaleas. I'd have bought one at 5.00, but not 18. Chance of survival, very rare.