Broccoli Waltham - Quebec Seeds | The Seigneurie Seeds

Cold-resistant heritage broccoli, champion of the Quebec garden!

Waltham 29 broccoli is a heritage variety producing large, compact, blue-green heads. Grown at Semis de la Seigneurie, this broccoli, developed in 1954 in Massachusetts, is exceptionally cold-hardy and perfect for the Quebec climate. It produces 15-20 cm main heads followed by numerous side shoots. It has a mild flavor and tender texture.

Why choose Waltham broccoli from Semis de la Seigneurie?

✅ Seeds produced in Quebec – Adapted to our climate, without chemical pesticides

✅ Cold resistant – Tolerates light frosts

✅ Heritage variety – Cultivated since 1954

✅ Extended production – Main head + side shoots

✅ Mild flavor – Tender and delicate texture

Culture in Quebec (zone 4b and above)

Start your seedlings indoors 4-6 weeks before the last frost (early April) or sow directly in the garden in May. Transplant in May for a summer harvest, or in July for a fall harvest (best flavor after light frosts). An excellent fall crop in Quebec!

Producer's advice

💚 Autumn cultivation recommended – improved flavor after frosts

🌿 Harvest the main bud before flowering

☀️ Sun to partial shade (tolerates light shade)

💧 Regular and constant watering

Culinary uses

Waltham broccoli is perfect steamed, sautéed, roasted, in soups, gratins, and raw. Mild flavor and tender texture. Delicious side shoots in a stir-fry!

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🌱 CULTURE

Indoor sowing:

• Start 4-6 weeks before the last frost (early April)
• Germination temperature: 15-25°C
• Germination: 5-10 days
• Depth: 1 cm

Direct seeding:

• May for summer harvest
• July for autumn harvest (recommended)
• Depth: 1 cm
• Spacing: Thin to 45 cm

Transplantation:

• May (summer harvest) or July (autumn harvest)
• Spacing: 45-60 cm between plants
• Rich, well-drained soil, pH 6.0-7.0
• Exposure: sun to partial shade
• Excellent in a 30cm+ pot

Interview :

• Water regularly and consistently (keep the soil moist).
• Fertilize every 2-3 weeks (vegetable fertilizer)
• Mulch to retain moisture and freshness
• Watch out for cabbage (net recommended)

Harvest :

• First harvest: 70-90 days after transplanting
• Harvest the main bud before flowering (when the buds are tightly closed).
• Cut 15 cm below the head
• Lateral growth continues for 4-6 weeks
• Production: 1 large head + numerous shoots

Adaptation to the Quebec climate:

✅ Excellent cold resistance (tolerates -3°C)

✅ Perfect for Quebec fall growing

✅ Locally tested by Les Semis de la Seigneurie

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🌟 MAIN FEATURES

• Common name: Waltham Broccoli 29
• Botanical name: Brassica oleracea var. italica
• Type: Heritage Broccoli
• Plant height: 45-60 cm
• Days to maturity: 70-90 days
• Head color: Dark blue-green
• Head size: 15-20 cm (main)
• Flavor: Mild, tender texture
• Yield: 1 large main bud + numerous side shoots
• Cold resistance: Excellent (tolerates -3°C)
• Origin: Massachusetts, 1954
• Hardiness zone: Annual
• Seed origin: Produced in Quebec by Les Semis de la Seigneurie
• Free from chemical pesticides

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💡 SUGGESTIONS FOR USE

In the kitchen:

• 🥦 Steamed – Tender texture, mild flavor
• 🍳 Sautéed – With garlic and olive oil
• 🔥 Oven Roasted – Deliciously Caramelized
• 🍲 Soups – Cream of Broccoli
• 🧀 Gratins – With cheese
• 🥗 Raw vegetables – Raw baby greens

Conservation :

• Fresh: refrigerated (5-7 days)
• Frozen: blanch for 3 minutes before freezing
• Side shoots: harvest as they appear