I've transplanted one within that size range.Mine was very root bound.It had very little soil left within the pot.I loosened the roots and went up a size& was also deeper pot.It seems much happier,but still seems to take alot of water.
Um I grow a sweedish ivy.I love mine.Mine are whiteish blooms.Whats unhappy with yours?(It don't bloom pinkish does it??I'd like the pinkish too.)
If your leaves are yellow& falling...could be too wet.
Dropping and green may need fertilized.
Stringgy looking...re vamp her cut some longest cuttings off root in water.re pot and when rootings take set them in with rest of plant to fill in.They like a peat based soil.(mines half potting mix half peat)
leaves dry& crisp..not enough water or too much sun.
Limp foliage...too hot or rootball is dry (or my case...too hot)
Only pest I've ever seen is spider mites.I ran for the 3 way fungicide by gardens safer.I think was a GH incident.
I can't think of any problems.I went through all these plus didn't know what the plant was at the time.mines just been through a re vamping.The cat dumpded it.I cold GH mine& in the summer it now gets morning sun & it don't sit in birdbathe which is concrete.I love the
flowers.It wasn't blooming in shade.I've burned it before too.Now I know to move it to my shade area when July hits.(I even gave it ice one day...it was 109)