Stuart Avocado Tree Shipped in Soil, Five Gallon Container Try this tree, as it has great tasting fruit on a tree that is very cold hardy. Want fresh avocados picked from your own tree? Even if you live outside avocado country, it can be done. Burchell Nursery is shipping Stewart avocado trees potted in soil over 3 feet tall, a great variety for colder climates. It is an avocado variety hardy to the low to mid 20s for short durations. Stewart is a more compact growing tree, giving you many possibilities for container use. Your avocados will be good tasting, about 4-8 oz, with thin black skin, ripening September to November. Avocado trees prefer loose, rich, consistently moist soil. The Stewart is self fertile.