This Zha choy is about 60~65 cm tall, ~60 cm wide. Leaf is ovel shape with serrated edge. the stem enlarges into thick tuber-like bumps just below the petioles. Thin skin, very crispy. It is widely used for pickling. About 100 days from sowing to harvest. Stem can grow into 1~2 kg.
Laura Easterling –
This is very vigorous, freeze tolerant, and it has seeded itself and is springing up all over the yard! Thick stems remain good when freezing (finally) kills leaves.