Hass Avocado Tree Giveaway Enter for your chance to win a Hass Avocado Tree from NatureHills.com.  This tree can be grown in zones 4 - 11 indoors and zones 9 - 11 outdoors. Giveaway ends on January 18th, so don't wait to enter. Get bonus entries if your friends enter through your shared URL.   SONY DSC               Hass Avocado Cut Open