• Grumpy flowering tree?
• It's wild and found in preserves
• Jelly source
• Sour fruit
• Sour-fruit tree
• Tart fruit
• Any of numerous varieties of crab apples cultivated for their small acid (usually bright red) fruit used for preserving or as ornamentals for their blossoms
• Suitable for preserving
• Any of numerous wild apple trees usually with small acid fruit
• Small sour apple