The Hall's Hardy Almond Tree features a medium sized hard-shelled almond, with a sweet to a slightly bitter kernel. Roasting and salting will remove bitterness. These almond trees grow 15-20 feet and have beautiful, profuse pink blooms and are sometimes sold just for its beauty. Hall's Hardy Almond is a heavy bearer and very cold hardy. It's also a semi-self-fertile tree but works better with a pollinizer. This particular almond tree requires only 800 chill hours and ripens in October.