Cabbages are not forming heads

(Question)

My red and white cabbages are not forming heads and I would like to know why.

(Answer)

Poor heading in cabbage can be caused by a number of factors such as:

  • Overcrowding- cabbages should be planted 18 inches apart
  • Insufficient water- long infrequest watering is much more beneficial than shorter surface watering
  • Club root fungal infection- signs of this are wilting plants, stunted growth and roots that are “clubby” with large swellings.  If this is what is affecting your cabbage do not plant anything in the brassica family in this location as it persists in the soil.
  • Root rot fungal infection- in clay or poorly drained soils root rot infection thrives, killing much of a plant’s root system. Again, change plant types in this location.

Please refer to the following website for additional information: http://extension.oregonstate.edu/gardening/how-troubleshoot-problems-growing-carrots-and-cabbages