Calculating Chilling Hours: Method 1: Chilling hours were calculated by counting the number of hours between 32 and 45 degrees F, from October 1st through February 28th/29th. Order trees, plants, and supplies online now. Excellent flavor, taste test winner. California has a lot of warm sunny Winter days that can really detract from the amount of effective chill a cherry tree accumulates. Large, yellow cherry with slightly more red blush than Rainier. Chill requirement 500 hours. It is distinguished from other cherries by the color of their skin and high sugar content. (Requires Pollinator) Moderate chill requirement, 500 hours estimated. Fully mature cherry trees grow to about 18-25′ tall and wide. Royal Rainier Cherry Large yellow cherry with slightly more red blush than Rainier. The chilling requirement is the total number of hours required during the winter for a particular cultivar to induce the tree to break dormancy and produce flowers. The Rainier Cherry Tree is an early bearing variety that ripens mid-season and is considered the best yellow cherry and possibly the most superior of all cherry varieties. Chill hours: 700. Chill Hours Are Important to Fruit Trees As you know, trees cannot walk away if they don't like the weather -- they have to stay and suffer through it. Rainier cherry is one of the sweetest cherries and can be enjoyed as a dessert all by themselves. (Zaiger) Pollenizer required: Lapins for low chill areas and in other areas, any sweet cherry. Rainier requires 700 - 800 chilling hours. Royal Rainier cherry is considered the best of all cherry varieties. The fruits are yellow covered with a reddish-pink blush. This made the Rainier cherry a more expensive Cherry to grow commercially. Royal Rainier Cherry - Standard. Ripens end of May to early June. If you have the chill I'd go with the regular Rainier. Zones: 5-9. The Rainier cherry has very thin skin, so the fruit is very sensitive to temperature, wind and rain. Rainier is a perfect variety for backyard orchards. This cherry bears at an early age. USDA Zones 5-9. Birds eat an estimated 1/3 of the entire crop. Nut and fruit trees (except for citrus) need a specific number of chill hours each winter to regulate their growth. You didn't specify exactly where you are though, and it's possible chill could still be an issue for you. Has a chill hours (CU) requirement of 700–800. (Chill hours are the average hours of air temperature between 32° and 45° F in a typical winter season.) Buy Rainier Cherry Trees from Willis Orchards! Contact for fast-growing evergreen trees and fruit trees. The flesh is yellowish-white, fine textured and very firm. Excellent flavor, taste test winner. Available on Mazz. Can be used for baking as well as canning and freezing. Ripens early, about 3-5 days ahead of Rainier. Raintree Nursery offers quality nursery products. While "Minnie Royal" and "Royal Lee" have an extremely low chill-factor of only 200 to 300 hours and "Stella" requires only 400 hours, most cherry trees need at least 700 to 1,000 chill hours. Features simple leaves that are often obvate with a sharp tip, are a waxy dark green color, measure 5½" long and … For many years, the Rainier was most commonly enjoyed as a … Ripens early, about 3-5 days ahead of Rainier. : Method 2: Chilling hours were calculated by counting the number of hours at or below 45 degrees F, from October 1st through February 28th/29th. : Historical Date of First and Last Frost and Chilling Hour Data Pollenized by Bing, Black Tartarian and Lapins. ) has a lot of warm sunny winter days that can really detract the! Winter days that can really detract from the amount of effective chill a tree. Could still be an issue for you sensitive to temperature, wind and rain low chill areas in. Fruits are yellow covered with a reddish-pink blush Zaiger ) has a lot warm. 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