In article , wrote:

None of my melon plants this year have got very far. I am currently left
with 3. One is obviously a watermelon. (with multi-lobed leaves) One is
obviously a melon. (climber, spikey like a courgette, tiny courgette type
flowers)

Well, maybe, depending on what you sowed :-)

One is not.
It isn't a climber, it seems - no tendrils, tall straight stem (about 5'
tall, maybe a little less).
It isn't spikey - leaves and stem are both velvetty smooth.
The flowers are more cup shaped, although the same colour and similar shape
to the normal melon ones.
Leaves are more spade shaped, with tiny teething on the edges rather than
the regular teeth on the melon, and possibly a little darker.

That's none of the cucurbits, as far as I know. It could be one
of the Solanaceae, though I can't think offhand of a yellow one,
though there certainly are some.


Regards,
Nick Maclaren.