About 3-4 years to harvest. Coffea arabica 'Nana'. Nana Arabian Coffee Seeds. Non-GMO, perennial, open-pollinated, tropical, dwarf coffee tree. Nana Arabian Coffee tree seeds grow dwarf coffee plants that will produce attractive white flowers, berries that mature from green to red, and glossy green leaves. The berries can be harvested and roasted into the coffee beans we’re all familiar with for brewing a nice cup of coffee. It can take about 3-4 years to produce any harvestable fruit. Although, it can be a wonderful indoor potted plant or a staple ornamental plant in tropical gardens while it is growing. ~160 seeds/oz.