I think that in most cases the reasons for 1or 2 size up rlue of thumb is based more on watering issues than too much grwoth without blooms ( I won't swear by it but I have done so many other plants that bloom in over sized pots and had not loss of blooming action:). I continue to here this about bougainvillas but have never heard it said about hibiscus. Hibiscus do resent wet feet but do love to be moist and not water stressed. Aborted blooms are frequent in these situations. I don't give my containered hibiscus all day sun in the summer because drying and bloom aborting happens too much at 100 degrees in July and August. I am potting up some one gallon hibs today and doing them in 3 to 4 gallon size plastic containers and then will double pot them in some cool mexican pottery for cooling, weight and display reasons. I look to grow my hibs in a pot size that allows for me working full time and not wanting to set up auto drips to keep them moist in summer and still small enough to not take too much room in the house for the winter. It can get to be a jungle in my living room as is and I am trying to not have so much clutter (plants good clutter:) over the winter months. SO this is my style to accomplish my goals and still have the hibs happy. All container growing is a balance of what the plant and person tending to it wants out of the relationship and making reasonable compromises to attain those goals. Sounds a little like marriage doesn't it and maybe it is more than we realize. I love my plants and I love my wife and I seek that compromise that keeps them both happy and me not feeling like growing them is a chore but a joy to behold just like I feel about life with my wife. Hope some of this makes sense and helps you decide what you will do. One more thought is that windy and conditions are tough on blooms and we are back to wateing and keeping your hibs happy so whatever you feel will do this is what you should do. Better a few less but spectacular blooms than more blooms but constantly seeing them shredded before you really enjoy them. Happy Growing whatever you decide. David

Yes. And turn the pot now and then so it doesn't root into the ground.

So it's two things I realized 1.) city water has a high ph which hibiscus don't like. 2.) city water (at least where I am) can have a lot of salt in it which builds up in potted plants. :/ what I'm trying is I let my tap water sit for 24 hours before use to allow the salts to sink to the bottom. For high ph I add vinegar to my bottle of water. Vinegar is good because even if you add a bit too much it doesn't stay in the soil for too long. It's a bit experimental so I'll give you an update in awhile but so far so good. I got a new sprout since I started.

i would definitely prune it at the point you indicated, or may be 1-2 " higher, as i prefer slight asymmetry. the top branch is very nice for rooting (if it takes), but it's too big. so you could do secondary cut above the fork making sure to leave 2 leaf nodes on each branch. then you'll have tip cutting too to root. pot size looks good to me. you can repot and prune at the same time.