(Zanthoxylum armatum) commonly called Winged Prickly Ash is close relative of Z. bungeanum, Z. foliolosum, Z. simulans, and Z. piperitum. Szechuan ppeppercorn tree is a fragrant shrub with prickly thorns. Winged spiny compound leaves. Small fruits in cluster with bumpy oil glance. It has a prominent citrusy aroma and taste like that of a lime. Has a weirdly tingling and mouth numbing sensation. Stems and leaves are with prickly thorns. This winged prickly ash shrubs can grow up to 17ft tall. Cool hardy to -10°F once plant is established. Growing needs: Sow seeds in early spring or fall or 40-50°F. Full sun or partially shade. Any soil but well drain soil. Chalk, Sandy, or Clay. Water regularly and abundantly. Chalky soil is a lime-rich soils, may be light or heavy. It's largely made up of calcium carbonate and are very alkaline (they have a pH of 7-8) If soil froths when placed in a jar of vinegar, then it contains free calcium...