Cauliflower Vegetable Seeds Packet

$4.95

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Cauliflower (Brassica oleracea var. botrytis) is a nutrient-rich cool-season vegetable belonging to the Brassicaceae family, which includes broccoli, cabbage, and Brussels sprouts. Known for its compact white curd (head), cauliflower is prized for its versatility, mild flavor, and high vitamin C content. Cauliflower is a delicious, nutrient-dense vegetable that thrives in cool temperatures and rich soil. Whether started from seeds indoors or sown directly outdoors, it requires consistent watering, blanching gardeners can enjoy fresh, homegrown cauliflower in their meals throughout the growing season.
Quick Seed Overview
  • Plant Type: Biennial
  • Genus: Brassica
  • Species: Oleracea
  • Plant Height/Width: 1.5–2 ft tall x 1.5–2 ft wide
  • Season: Spring
  • Exposure: Full Sun
  • Difficulty: Difficult
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How to Plant Cauliflower from Seed

When to Plant Seeds

  • Spring Crop: Start seeds indoors 4-6 weeks before the last frost date.
  • Fall Crop: Directly sow seeds 8-10 weeks before the first expected frost.
  • Succession Planting: Plant every 2-3 weeks for a continuous harvest.

Preparing for Planting

  1. Select a sunny, well-drained site with nutrient-rich soil.
  2. Loosen soil 12 inches deep and mix in organic compost or aged manure.
  3. Maintain a consistent soil pH of 6.0-7.0.

Direct Sowing Outdoors

  • Sow seeds ¼ inch deep, 12-18 inches apart, in rows spaced 24-36 inches apart.
  • Thin seedlings to 18 inches apart once they develop true leaves.

Starting Indoors

  • Sow seeds ¼ inch deep in seed trays filled with moist potting mix.
  • Maintain temperatures 65-70°F (18-21°C) for germination.
  • Seeds will germinate in 7-14 days.
  • Transplant seedlings when they have 4-5 true leaves.

Pro Tip

For large, tender cauliflower heads, practice blanching by tying the outer leaves over the developing curd when it’s about 2–3 inches in diameter. This protects it from sun exposure, preventing discoloration and bitterness.

Getting to know your Cauliflower

Cauliflower is a cool-season vegetable in the Brassicaceae family, prized for its compact, edible white curds. It grows best in nutrient-rich, well-drained soil with full sun. The plant requires consistent moisture and cool temperatures to prevent premature bolting. Cauliflower heads, known as curds, develop within protective leaves that shield them from excessive sun exposure, preserving their white color. Some varieties produce orange, purple, or green curds. It is a heavy feeder, requiring ample nitrogen and phosphorus for optimal growth. Cauliflower takes 60-100 days to mature, making it more challenging to grow than other brassicas. It is used in various culinary dishes, from steaming to roasting, and is a popular low-carb substitute for rice and flour.

What it's used for

1. Culinary Uses:

  • Consumed raw in salads, roasted, steamed, stir-fried, or mashed.
  • Used as a low-carb alternative (e.g., cauliflower rice, pizza crust, and cauliflower steaks).
  • Pickled or fermented for preservation.

2. Nutritional Benefits:

  • Rich in vitamin C, vitamin K, fiber, and antioxidants.
  • Supports digestion, immunity, and heart health.

3. Companion Planting:

  • Grows well with celery, onions, spinach, and beets.
  • Avoid planting near strawberries or tomatoes, which may compete for nutrients.
Growth Requirements

Light:

  • Requires full sun (6+ hours of direct sunlight per day).

Soil:

  • Prefers rich, well-draining, loamy soil with a pH of 6.0-7.0.
  • Add organic matter like compost or aged manure before planting.

Watering:

  • Needs consistent moisture, about 1-1.5 inches per week.
  • Avoid overwatering, which can cause root rot.

Temperature & Climate:

  • Best growing temperatures: 60-75°F (15-24°C).
  • Can tolerate light frost, but extreme heat can cause poor head formation (buttoning).

Fertilization:

  • Use a balanced fertilizer (10-10-10 or organic compost) at planting.
  • Side-dress with nitrogen fertilizer every 3-4 weeks for optimal growth.
Maintenance

Watering:

  • Keep the soil evenly moist, but avoid soggy conditions.
  • Mulch with straw or compost to retain moisture and regulate soil temperature.

Fertilization:

  • Feed with a balanced fertilizer (10-10-10) every 3-4 weeks.
  • Apply calcium-rich amendments to prevent hollow stems or tip burn.

Blanching (For White Cauliflower):

  • To keep the curd white, tie outer leaves over the head when it reaches 2-3 inches in diameter.

Harvesting and Seed Collection

  1. When to Harvest:
    Cauliflower is ready 60-100 days after planting, depending on variety.
    Harvest when the head is 6-8 inches in diameter and firm.
    Cut the head at the base with a sharp knife, leaving a few outer leaves attached.
  2. Storing Cauliflower:
    Store in the refrigerator for up to 2 weeks.
    Can be blanched and frozen for long-term storage.
  3. Saving Seeds:
    Allow plants to flower and set seed in their second year.
    Collect dried seed pods, store in a cool, dry place, and replant next season.
Pests and Diseases
  • Common Pests: Cabbage loopers, aphids, flea beetles.
    Use floating row covers to protect plants.
    Spray with neem oil or insecticidal soap if needed.
  • Common Diseases: Clubroot, black rot.
    Rotate crops yearly and avoid planting cauliflower in the same spot every season.

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Pretty Pots for Pretty Plants

Your plants work hard to look good—shouldn’t their pots do the same? Choose from our gorgeous flower pots and let your greenery thrive in style. Because plain plastic is just rude.

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