Looks like lots of room in that pot and the soil looks pretty good. I usually top my pots off with some fresh soil instead of a total repot. The only time I do a repot is when I start new plants from the cuttings themselves. Sometimes I keep the old stumps since they will make new plants but then I compost some too. You shouldn't have to fertilize if you add new soil that has fertilizer in it. If you do fertilize the old rule of thumb is a weekly weakly water soluble or a slow release fertilizer. The weak mixture is usually half strength of what the manufacturer recommends and done weekly. I don't do this anymore - maybe I should.

I wouldn't put it in a larger pot until next spring. If you want big plants, then you need bit pots BUT they take up more floor space and they are often over-watered indoors during winter. Even smaller pots can get some nice size plants but it requires more water and care.

A few of my begonias in semi-shade. This was last week and I have to start the mental task of bringing them all indoors for winter.

They seem to grow well in shallow pans too - I guess they dry out faster than deep pots so less chance for root rot.

Thank you for the ingo., HC!

“If you do fertilize the old rule of thumb is a weekly weakly water soluble or a slow release fertilizer.”

Even in the winter? I haven’t watered it since I did the fertilizer. I need to read up again when they like water. I’ve

over watered in the past.

Your begonias and all the other plants are beautiful!! I like the polka dotted ones.

Do you pinch yours to make them fuller? I read about pinching back the tops but I don’t really know where or when to do that. Will it just create additional branching out down the same cane? How often?

Also I only cut the plant back 2/3, would it have been ok or better to cut it back all the way?

Thank you so much for all that info.!

Those are beautiful!! I’m so excited about my begonia!

Since you don’t really use fertilizer do you repot every year with a mix that has fertilizer?

I was told mine never bloomed but since they’re supposed to I’m assuming it never had enough light. My goal is for blooms to see if I can but they’re pretty without too.

Are any of those above staked? The older canes are pretty sturdy but the newer ones are bending already. I don’t really want to see the stake but also don’t want the plant all flopping over.

I rarely repot. I find topping the surface off is often all they need. Even a repot is usually into a bigger pot but with the root ball intact. Why waste potting mix.

Some folks do repot every year. Some every six months. That is a lot of work and money.

Your begonia may be Sophie Cecile and someone mentioned years ago that they never saw it in bloom. I don't think mine has bloomed after that statement but I thought it had many years ago (I've had it nearly 40 years but this is from cuttings every few years). Anyway some experts in Florida and California said it needs more sun and fertilizer to bloom - it is known as a "shy bloomer".

The last two begonias I posted are not staked but I have staked them at times. If I don't have to, then I like to be lazy and cheap.

Here are two I did stake but these are metal tubes coated with vinyl so I don't like to cut them to size. A bit hideous but it helps the plants stand up.

A better solution is to buy bamboo stakes and cut those to size but they have their own set of problems.

It is a lot of money and time to repot every year. That’s what I’ve been doing but this year I felt like it was a lot. Especially when I wasn’t potting up. I may try just adding to the top in the future.

Oh no. I have a bag of bamboo stakes I bought recently and used with two plants. Is mold the issue? I was hoping to change them out before that becomes a problem.

I buy 3 to 6 of those double size bags of potting soil every year - topping off, potting up, and new plants. I finally decided to start buying the regular sized bags this year since I can manage those a lot better - easier to carry from the driveway through the garage to the deck and down the steps to the backyard or walk it down the steep hill on the side yard. Wheelbarrows and garden carts on a banked steep hill are a bit unwieldy and I have tipped many times over the years. If I repotted everything each year I wonder how many bags I would have to buy and how many weeks it would take to do them all. I don't really wonder at that at all; it is just out of the question.

Bamboo stakes don't mold in normal outdoor air (or indoors for that matter). They will mold if placed inside a terrarium though (I have noticed) but that isn't fair either as it is really bamboo skewers instead of bamboo poles that I have used in terrariums.

The problem with bamboo stakes is you must cut the top (or bottom) near the node which may make it too short or too long as some nodes are 6 inches or more apart. Over time sitting in wet soil, they will start breaking down but I don't have any idea on how long a typical bamboo pole/stake will last. They can split but that is kind of rare but it also means it needs to be taken out. At least you can buy a bag of bamboo stakes in different lengths and thickness at your nursery center (I used to get mine at Walmart or Home Depot). My latest pole I am using for Dragon Fruit is a crepe myrtle trunk of 1.5 to 2 inches diameter. I wonder why someone hasn't made Trex poles for the gardener by now.

Here is an excellent example of staking tall begonias at the 2009 ABS convention in West Palm Beach.

I cropped into some of the photos above to show the stakes and ties.

Wow, they’re like trees! Begonia goals! 😁

Thanks for posting more info and photos.