'Flying Dragon' Hardy Orange (syn. 'Monstrosa') is a citrus that can actually be grown in the Northeast.  The fruits are golf ball sized yellow-gold oranges in the fall that can be made into a very tart marmalade (lots of sugar needed).  The deliciously fragrant white flowers are bourne on the deep green contorted, thorny stems in April and May.  The twigs are ornamental for both structure and color in the winter.  Just make sure Poncirus 'Flying Dragon' is not planted near play areas, as the thorns are significant. 

• Category: Woody Ornamentals
• Alternate Cultivar: syn. 'Monstrosa'
• Hardiness Zone: 6
• Height: 5 Feet
• Spread: 5 Feet
• Bloom Color: White