It seems like you’re interested in growing napa cabbage in a bag. While growing napa cabbage in a bag is not a conventional method, container gardening is a popular approach for those with limited space. Here’s a general guide for growing napa cabbage in a bag:

Materials:

Large grow bag or container with good drainage
Quality potting mix
Napa cabbage seeds or seedlings
Fertilizer (preferably balanced or low in nitrogen)
Watering can or hose
Optional: Mulch for moisture retention