HAVE a big-leafed hoya, years old, hanging in my back porch where
it gets filtered sun. I water and feed it regularly. It looks healthy,
but it has never flowered. What can I do to encourage it to flower?
SOUNDS like your hoya is the climbing Hoya carnosa, which
can take years to flower, but once it does will probably flower
each year from the same spur (flowering shoot), as well as from
new spurs. You'll probably just have to be patient, but in an attempt
to encourage it to flower, I'd stress it a little. Let it get pot-bound
and hold back on the fertiliser - but not so much that the leaves
go pale. Ideally, use a fertiliser that is relatively low in nitrogen
and high in potassium.
Gardener, Issue 189, 2005, Page 25
Reproduced with permission from the former Weekend Gardener magazine. The views expressed here are not necessarily those of the RNZIH.