Hi Emma! Good to see you again! I grew this one from a very small plug plant, they are very slow. I love them, the petals seem to be ballooning out on this one, and that 'red heart', well who REALLY needs tropical Hibiscus?? (Me?)
Janet, I came across your photo when I was searching for a Solid White that I just got seeds for and haven now fallen in love with the 'Red Heart' variety. I must admit I've not paid much attention to the ROS's until the last couple of years and now have several different varieties going, including the SOLID RED 'supposedly'. Forgot the name - would need to look it up. But, I just LOVE yours, Janet. So unique. Yours IS the Winner!
Emma, Woodbridge is the deeper pink one with red eye, I haven't come across a solid red, it's more than likely a selection of that. Oiseau Blue or Blue Bird is equally as nice. Is the red one a Hybiscus syriacus? there are very large hybrids of a different type which are hardy that are red, 10-12" flowers, I grew some Galaxy last year, they are hardy to -20C and just starting to grow again, still small but I think they will put on some size this year. They are supposed to be able to flower in the first year with an early start, not in this climate!
I also have Hibiscus syriacus Blue Satin™
And another that just 'may' be the one you've described as 'Woodbridge'
I'll need to dig out some photos and maybe you can ID for me.
I do have several Hardy Hibiscus. All are Disco Bell Series that are 3' Dwarfs with HUGE 10" Blooms.
One is a 'killer'. Just beautiful that is 'Almost Red', a Deep Dark Red-Rose Color.
Real car stopper.