Thanks for your question.

If your hibiscus plant is showing good foliage, I don’t think there should be serious concern about its lack of blooming. It probably is still getting adjusted to its new location and rather than expending energy on flowering, energy is being directed to expanding its root system. I would certainly wait until the 2025 season is well underway before deciding whether to transplant them again. Generally it can take a hibiscus several months to bloom after being planted. Multiple factors are involved:

1). Adequate sunlight, temperature, and humidity levels can encourage faster blooming. While your thinking that perhaps they might need a sunnier location is valid, I would delay a final decision until after the 2025 season.

2). As I mentioned, the plant may be experiencing transplant shock, which can delay blooming.

3). The maturity of your hibiscus at the time you planted is a major factor in when blooming will start. If your plants were relatively young, a delay in blooming is not unexpected. A mature plant is likely to resume blooming faster than a younger one.

When you said you planted “hardy hibiscus”, hopefully the plants were rated for zone 4 and NOT zone 5. Although parts of the Metro Area are now considered to be in zone 5, to be on the safe side zone 4 hibiscus are your best bet. Here is some further information regarding your hibiscus including prepping them for the upcoming winter:

https://www.growjoy.com/keeping-hardy-hibiscus-over-the-winter/ - :~:text=Once the leaves have died,to successfully overwinter your hibiscus.

https://www.americanmeadows.com/content/grow-hardy-hibiscus

https://www.thespruce.com/hardy-hibiscus-plants-2132719

Good luck and be patient. Get back to us with any further, related questions. Thanks for consulting our forum.

Glad to be of assistance.  Thanks for consulting us.