How to PlantCauliflower. Sow seeds in rows 3 to 6 inches apart and up to ½ inch deep. Set plants 18 to 24 inches apart with 30 inches between rows. Expert advice from Eden Brothers on plantingcauliflower, including the best time to plant, garden location, and harvesting tips. The plants prefer moderate temperatures, making an excellent spring and fall crop in most regions. Keep reading to discover how to plantcauliflower from seed. CauliflowerSeed Germination. Cauliflower grows best at around 60 degrees F. (15 C.). Too far below that and the plant will die. We recommend starting cauliflowerseeds indoors to control temperature, humidity, and light. For spring planting, start cauliflowerseeds indoors 4 to 6 weeks before the last frost date. Plantcauliflowerseeds indoors when there's cool weather in the spring or in the fall.Transplant the seedlings to a sunny spot outside when they have 3-4 true leaves. Sowing Seeds or Transplanting Seedlings. Cauliflower can be cultivated from seeds indoors or directly sown into the garden. Begin seeds indoors four to six weeks before transplanting. Learn how to grow broccoli and cauliflower from seed with tips on planting, light, spacing, fertilizing, and harvesting these nutrient-rich, cool-season crops. Mulching can keep your soil moist and cool, which is important for the proper development of your cauliflowerseeds and plants.
