Possible Clues:

• It's crooked to question you like this, by the sound of it
• On the bias
• Obliquely referring to botanic gardens
• Oblique request to opposites - will they never meet?
• Slightly off balance
• Presumably having lots of plants wonky?
• Crooked, like a botanical garden
• How some hipster hats are turned
• Leaning to one side, king hampered by a stitch
• Off plumb