Has a chill hours (CU) requirement of 700–800. For many years, the Rainier was most commonly enjoyed as a … Fully mature cherry trees grow to about 18-25′ tall and wide. Moderate chill requirement, 500 hours estimated. (Chill hours are the average hours of air temperature between 32° and 45° F in a typical winter season.) California has a lot of warm sunny Winter days that can really detract from the amount of effective chill a cherry tree accumulates. 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. : 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. Can be used for baking as well as canning and freezing. Birds eat an estimated 1/3 of the entire crop. Ripens early, about 3-5 days ahead of Rainier. Large, yellow cherry with slightly more red blush than Rainier. 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. Excellent flavor, taste test winner. Order trees, plants, and supplies online now. Ripens end of May to early June. 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. Features simple leaves that are often obvate with a sharp tip, are a waxy dark green color, measure 5½" long and … Ripens early, about 3-5 days ahead of Rainier. Pollenizer required: Lapins for low chill areas and in other areas, any sweet cherry. Chill requirement 500 hours. Chill hours: 700. (Requires Pollinator) Nut and fruit trees (except for citrus) need a specific number of chill hours each winter to regulate their growth. If you have the chill I'd go with the regular Rainier. (Zaiger) 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. This made the Rainier cherry a more expensive Cherry to grow commercially. The Rainier cherry has very thin skin, so the fruit is very sensitive to temperature, wind and rain. Buy Rainier Cherry Trees from Willis Orchards! Rainier is a perfect variety for backyard orchards. Rainier requires 700 - 800 chilling hours. Rainier cherry is one of the sweetest cherries and can be enjoyed as a dessert all by themselves. Pollenized by Bing, Black Tartarian and Lapins. Available on Mazz. The fruits are yellow covered with a reddish-pink blush. The flesh is yellowish-white, fine textured and very firm. Royal Rainier cherry is considered the best of all cherry varieties. You didn't specify exactly where you are though, and it's possible chill could still be an issue for you. Royal Rainier Cherry Large yellow cherry with slightly more red blush than Rainier. USDA Zones 5-9. Excellent flavor, taste test winner. Raintree Nursery offers quality nursery products. It is distinguished from other cherries by the color of their skin and high sugar content. Contact for fast-growing evergreen trees and fruit trees. : Historical Date of First and Last Frost and Chilling Hour Data 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. Zones: 5-9. Royal Rainier Cherry - Standard. This cherry bears at an early age. Of their skin and high sugar content all cherry varieties one of entire! A specific number of chill hours each winter to regulate their growth can... Of their skin and high sugar content flesh is yellowish-white, fine textured and firm! Except for citrus ) need a specific number of chill hours each winter to regulate their.... 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