The garden has seen better days.
After leaving the queen's room via the door on the left, walk across the atrium.
You'll find the garden by peeping through the window with a four-leaf clover on it.
Indeed - it's winter in the fairy realm, and apples don't grow in winter.
Don't be so quick to give up! If it wasn't obvious from the atrium, the fairy realm is weird.
We can manipulate the seasons from elsewhere.
There's a doorway right next to the window to the garden; check that out.
A gallery of sorts, filled with several fairy artifacts and oddities for you to play with.
Everything we need for apple-growing is in here.
The garden seemed extremely grey - perhaps that colourful stone can perk it up?
Like I said earlier, the fairy realm is weird - you can probably use magic to get up to the upper level.
Try poking and rearranging a few things - see if any magic happens.
Grab the crystal next to the mirror, and put it into the fixture on the right.
That'll unlock a corridor that takes you to the second level with the colourful stone.
Taking the stone from the basin drained all of the colour from the paintings around it. Odd.
You can even put the stone back into the basin to restore the colour.
Try to restore colour to some of the other paintings in the gallery.
There's a basin on the lower level that you can place the stone in.
Have another a look at the garden to see for yourself!