The general consensus on olive trees is that they should be spaced between 5 feet for a high density grove or 18 feet for a traditional grove. Some research seems to indicate a 28 foot distance works as well with acceptable pollination taking place. If this spacing does not fit your plans, additional sources indicate the pollen from one olive can be manually transferred to another tree as done by some olive and date growers. We recommend doing additional research on this method to determine if this method will work for you if higher production is desired.