Hi JonnyBravo.
Your "smallish but mature Stan wardii is overgrowing it's basket" ...
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When a plant overgrows it's basket, the reason therefor is long over-due repotting, right ?
Long over-due repotting also means degraded compost. Degraded compost destroys roots causing
malnourishment, and that's the reason why the leaves of your plant are so smallish ...
A malnourished plant cannot flower. Probably, the "flower spike" (1 cm) you hope for is no flower spike
but only the beginning of another smallish leaf ...
Hence, I suggest that you re-basket your plant; see thread "AmandaTom, Stan platyceras bud drop" ...
Outlook ::
a well-cultivated Stan wardii has 4 or more upright standing leaves of a length of 16 in. After a dry season,
she may produce 5 or more flowers which hold their sepals/petals up and emit a distinctive scent and are,
with large, dark eyes looking at you, arguably amongst the most beautiful of all the Stanhopeinae ...