Question
My Mother-in-law has a Hoya Plant and was blooming beautifully, then the leaves started turning just a little yellow. She thought it was due to too much sun; I noticed it was directly under the a/c vent. She has since repotted her Hoya and moved it to an east window...doesn't look like it is improving.

Another question. Mother has given me 3 starts to new plants of the Hoya. The leaves are root bound but there seems to be no off-spring.

Anything you can help us with?

Jennifer Carter

Answer
Yellow leaves is usually an indication of Nitrogen lock.  This is caused by a build up of acid in the soil.  She did the right thing repotting it.  The next step is to feed a high nitrogen fertlizer like fish emulsion.  Do this once a week until the plant begins to green up.  And really I recommend a rotating fertlizer schedule that includes fish emulsion anyway.  It is really good for the plants growth and health.

Next the leaf.  Most of the time the leaves will not produce babies until it is root bound.  Give it another month or so.  If nothing comes up ask her for a cutting instead of leaves.  Also feeding with fish emulsion would also be a good thing here as well.

Happy Growing
Kristina