It will grow, however I would suggest removing the other wheat next to it. Basically it's trying to grow, but since you only have 1 of the 4 adjoining blocks grow able, it keeps failing. That's my best guess anyway. I usually always have two tilled slots next to my melons. Usually I will plant two melons in a pattern like this:
That way they both have two spaces to grow, that don't overlap with the other melon.
Oh and as to the title: THATS WHAT SHE SAID!
It can take longer for a melon to grow on a 1 block space. Keep waiting and it will grow eventually.
If you want them to grow fast, surround the stem with four tilled blocks.
The stem picks a spot surrounding it to grow in, and if it can't grow there, it fails and starts over. If you have four blocks around, it won't fail, so it has a chance to grow much faster (some times faster than wheat if it has daylight)
Trying to get games written for windows to work on a Linux machine is like trying to put a diaper on an incontinent buffalo. Sure, you might get it all done, but you'll certainly be left with a huge mess, and it's very time consuming.