Black Tartarian used as a pollinator for other dark, sweet varieties of cherry. Black Tartarian Black Tartarian (originally "Ronald's Large Black Heart") is an heirloom cultivar of cherry. It was brought from Circassia to England in the 1700s by a man named Hugh Ronalds, and from England it was brought to the United States in the 1800s. The fruit of the Black Tartarian is about one inch in diameter, with a unique taste and texture, but too soft for commercial shipping. It is primarily grown as a pollinator for other cherry varieties. The Black Tartarian cultivar is best suited for USDA Zones
Fruit tree pollination a pollinator tree. Working from an old Spanish variety, "Tuono", researchers in 2008 started making available new self-fertile varieties that more closely match the qualities of the popular "Nonpareil" almond—including varieties "Lone Star" and "Independence". While self-fertile trees do not require pollen from a second tree variety for fruit / nut set, they still depend upon insect pollination for good production. Almond growers with self-fertile almonds report excellent nut set with half (or less) the number of bees in the field. Like apples, pears are self-incompatible and need to attract insects in order to be pollinated and produce fruit. One