Along with the Spooky Tree, Farmville released another Halloween themed Limited edition item- the Farmville Hollow Tree!
Sorry Farmville collectors, this limited edition item can only be purchased with FV cash. 
The Hollow Tree will cost you 7 FV cash and the offer will expire in 7 days. Afterwards, the Hollow Tree will be retired into the Farmville abyss and thus, be an unattainable item.
As FarmvilleFreak reader “Blackend” noticed, The Hollow Tree Glows! If you are able to see a Hollow Tree on Farmville, be sure to check out the glowing action, as the Hollow Tree’s eyes and mouth lights up an Amber Alertamber color.