Cabbage
Brassica oleracea var. capitata. Cabbage shares botanical roots with broccoli, cauliflower, and kale, belonging to the Brassicaceae family. Cabbage comes in various cultivars, including red and green varieties. Renowned for its round or elongated heads of tightly packed leaves, cabbage boasts a distinct flavor profile. Its robust leaves form a dense head atop a sturdy stalk.
Starting Seeds
The ideal range for broccoli germination falls between 40°F (4°C) and 85°F (29°C). However, the optimal temperature is typically around 75°F (24°C).
Start seeds indoors 8-10 weeks prior to your last frost date. Direct sow in the summer for a Fall harvest.
When to Plant Out
Cabbage should be transplanted outdoors 4 weeks before the last expected frost date.
Light
Full sunlight: at least 6-8 hours a day.
Space
Space plants 12-18″ apart. Be sure to check the seed packet for specifics on your variety’s size.
Temperature
Cabbage is a cool weather crop, with ideal temperatures ranging from 45°F to 75°F (7°C to 24°C). While established cabbage plants may tolerate temperatures ranging from 20°F to 26°F (-7°C to -3°C), prolonged exposure to temperatures below 50°F (10°C) or above 80°F (27°C) can cause the plant to prematurely bolt.
Water
Keep the soil consistently moist. Water at the base of the plants to keep the foliage dry and reduce the risk of diseases.
Pruning
Cabbage does not require pruning.
Harvesting
Harvest cabbage heads when firm before they split. Use a knife or garden shears to remove the head from the stem.
Propagation
Cabbage is propagated from seeds. Cabbage cross-pollinates with not only other cabbage varieties but also other brassica plants, so saved seeds are often not true.
Other Considerations
Cabbage is highly susceptible to the cabbage worm and cabbage looper which can decimate entire crops. Consider growing cabbage under insect netting.