Black Tartarian 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 5-7. It is a very vigorous, heavy-bearing variety, but is primarily
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