🧅The Egyptian Walking onion is a cold-hardy perennial to USDA zones 3-10. Other names include: tree onion, topsetting, and walking onion, (Allium × proliferum). It is a cross between the common bulb onion and Welsh onion, (bunching onion/scallion).🧅Walking onion is very prolific and self-propagating. Over time, the bulbs multiply. The flower stalks get weighed down by clusters of bulbils on top and eventually topple over. The bulblets that root will develop into new plants. Its name was derive