My Hoya leaves have changed color.

I have 3 identical Hoyas all were root bound in very small pots.
A few months ago I repotted the largest one and I'm dismayed at the result.
The other two still root bound Hoyas are growing vigoriously sending out branches and both are a dark rich green. The repotted Hoya is not growing and the leaves have gotten much lighter in color, not sickly looking, but very noticably lighter.
I would like to repot the other two but I'm a little concerned.
Any thoughts.
The picture is from before I repotted.

How much bigger a pot did you move it to? If it went up just a bit it shouldn't hurt...but it could be too big. H. pubicalyx lives very happily root bound for a long time....

I'm sure someone with more experience will chime in but I have always heard H. needs to be potbound. Only add rich top dressing to the pot occasionally. It may take time for the repotted one to recover...

I recently repotted a pubicalyx that had been in the same pot for 25 years. It's only a slightly larger pot (more depth than circumference) but it also stopped all growth and is sulking. I'm not concerned though, knowing that they don't like being transplanted into larger pots that much. But, hey, 25 years!? There was virtually nothing but roots in that pot. I too think your plant will eventually be fine with the new arrangement (if you didn't put it in a too much larger pot).

Hoyas, being basically epiphytic growers, tend to spread out surface roots looking for nutrients...tho' I have had them grown out of the pot at the bottom if they find water down there!!! You might have better luck to plant them in a slightly larger pot - width-wise- (I use bulb pots when I can and trim the lower bottom roots off). I never go up more than one size....and generally repot the root ball against the side of the pot on one side giving more space on two sides. Recovery seems quite fast because at least the root ball has two sides touching the pot....

Just my .005cents worth!

Carol, I had never thought about putting the rootball up against two sides of the pot when potting-up for faster recovery time. Brilliant!!! That is excellent advice and makes absolute sense. If hoyas like being pot-bound, why not make it think it's pot bound when increasing the pot size. My pubicalyx (which is in a 12" pot now) had to be moved up from its 10" pot. It ALWAYS blooms for me and it didn't this year. I bet it is because I repotted it and plopped it down in the middle, rather than to the side, of the pot so now the roots are growing, rather than developing blooms.
Ann

YUP...probably, Ann... H. pubicalyx is one of those that can stay in the same pot forever!!! I don't pot up my large plants until the roots are so thick the water won't run thru them!!!! Sometimes I just 'shave' back the roots and put them in the same pot. I often put my large plants into a slightly larger hanging pot. I have found the hanging pot/basket with the drain holes plugged and the pot with the hoya in it sitting in water...with roots filling the outside basket!!! I have done three things when this happens: 1) I leave the hoya in the smaller pot and just cover the whole thing with dirt...planting the hoya and the pot together 2)trim the roots off and repot 3)carefully break the pot and take the hoya out, repotting the whole root ball again. Results? It didn't matter which method I used...they were all just fine!!!

Carol,
When you shave back the roots, do you cut off the bottom 1/3rd of the roots and put back on top of fresh soil?
Ann

Yes...about that much. I usually find that inside the root ball is rather hollow...mostly planting medium...and the roots are along the sides. I also usually plant the 'root ball' a bit deeper so that I can put fresh soil on the top of the previous roots...which are generally fairly crowded and poking thru.....

I've made a mistake. I'm going to repot the Hoya in the same pot but fill the bottom half with stones. This should give me the weight and also the flatter soil pattern.