How to Grow Romanesco Broccoli


Romanesco bears little resemblance to other types of broccoli. The florets form a spiraling fractal pattern that makes this vegetable as attractive as it is tasty. Its flavor also differs from broccoli. Romanesco varieties have a mildly nutty taste that complements cooked and fresh dishes. It's used raw in salads or on its own, or it's served cooked as a side dish or a component in main dishes. Romanesco requires growing conditions and care similar to other broccoli varieties.

Things You'll Need

  • Pots
  • Potting soil
  • Fertilizer
  • Knife
  • Plant Romanesco seeds in individual seed pots eight weeks before the last expected frost in your area. Sow the seeds 1/4 inch deep in moist potting soil.

  • Place the pots in a 75 degree Fahrenheit location. Water the soil if it begins to dry. Romanesco germinates in approximately one week.

  • Move the seedlings to a 60 F location where they receive bright sunlight. Water the seedlings when the soil surface feels dry.

  • Locate the pots outdoors in a protected area approximately four weeks after germination and when outdoor temperatures are steadily above 45 F during the day. Leave the pots outdoors for one week so they adjust to outdoor temperatures, bringing them in only when temperatures drop below freezing.

  • Plant the seedlings in a well-drained, full-sun garden bed. Space the Romanesco 16 to 24 inches apart in the row and space the rows at least 24 inches apart.

  • Water the Romanesco approximately once a week so the top 6 inches of soil remains moist. Apply approximately 1 inch of water. Soils retain moisture well in spring so the Romanesco may not require frequent irrigation.

  • Fertilize the Romanesco three weeks after transplanting with 1/4 lb. of 10-10-10 blend fertilizer per 10-foot row. Sprinkle the fertilizer down the row about six inches from the base of the plants. Water thoroughly after fertilizing.

  • Cut off the head of Romanesco at its base when it is fully formed but before the florets begin to open. Romanesco takes approximately 75 days from planting to harvest.


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