Although cabbage can tolerate shade they will do much better in a sunny spot. SUNNY SPOT! Not Hot direct sunlight for long.
Shelter is very beneficial. and Avoid soil that becomes waterlogged or conversely dries out rapidly.
Keep the soil around the cabbage weed-free. Take care when weeding because the roots are easily damaged. Remove any yellow leaves or those badly damaged by caterpillar or slug attack as you go.
Once I saw how suffocated they were… I left only 4 seedlings in the pot.
And then in another 3 weeks, they looked like this 🙂
Cabbage can be harvested anytime after the heads form. For highest yield, cut the cabbage heads when they are solid (firm to hand pressure) but before they crack or split. When heads are mature, a sudden heavy rain may cause heads to crack or split wide open. The exposed internal tissue soon becomes unusable. Harvest and salvage split heads as soon as possible after they are discovered.
Cabbage leaves doesn’t like lot of water falling on them, so make sure when you water you don’t spill water on the leaves, it makes them yellow and useless.