Abies cephalonica Greek Fir Up for bid are seeds of the Greek Fir. This beautiful tree has nice short stiff green needles. It is a pyramidal upright grower, and this is evergreen. Greek Firs are also the most popular species of Christmas tree. They are hardy to at least USDA zone 5, and possibly colder. These trees would make excellent additions to your rare plant collection, or just make a unique statement in your yard.