Their blooms are often frost damaged. European plums are of a higher quality than Native American plums, which are useful for preserves. European plums are most recommended for Colorado growers. Suggestions include Stanley, Green Gage, Blue Damson, Waneta, President, and Sapalta. There are two main types- tart or sour cherries, and sweet cherries.
Tart cherries are the most dependable for Colorado.
Sweet cherries are not as winter hardy. Tart varieties for Colorado include Montmorency, Meteor, and North Star. Sweet cherries include Bing, Van, Early Richmond, Black Tartarian, and Kansas Sweet. Stella is a winter hardy, self-pollinating sweet cherry. Bartlett, Kieffer, Maxine, Moonglo, and Anjou are suggestions.