Answer: This might sound too obvious, but your friend has a sour cherry tree. There are many varieties; here's what I recommend for your climate. The first is a pair called 'Jan' and 'Joy' (plant one of each for pollination). These are bush-cherries (4' full grown). The other is 'Northstar', which is self-fertile (you only need one tree to get fruit), and grows 10'. 'Montmorency' is another fine variety. Two suppliers I can suggest are Edible Landscaping (www.EAT-IT.com; ph# 800/524-4156) and Miller Nurseries (5060 West Lake Rd., Canandaigua, NY 14424; ph# 800/836-9630). Since Edible Landscaping is located in Virginia, their southern-grown stock might be better adjusted to your climate. Hope this helps!
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