Both need a long warm growing season to produce, but our summers are cool & better suited for other Asian vegetables like:

Chinese broccoli or kale, Brassica. oleracea var alboglabra (white flowering broccoli)

Chinese cabbage B. rapa var pekinensis (esp. loose ones semi-headed or fluffy top)

Chinese celery cabbage, Pak Choi, Brassica rapa var chinesis

Mustard Spinach, B. rapa var pervirdis (Komatsuna)

Perilla, purple (Shisho or Beefsteak plant)

View my trade list for other seeds to trade.

Here is a link that might be useful: Corrine1's trade list