Learn how to grow green onions (scallions) from seeds in Canada with this step-by-step guide. Get expert tips on planting, soil preparation, care, and harvesting for a successful garden. Find high-quality seeds, soil, and compost at our Garden Centre in Vancouver!

Green onions, also known as scallions, are a versatile and easy-to-grow vegetable that thrives in the Canadian climate, including in Vancouver. Growing green onions from seeds in Canada is a simple process that provides gardeners with fresh and flavorful greens year-round. They are an excellent choice for gardeners looking for a continuous supply of fresh, flavorful greens. In this guide, we will walk you through the steps of growing green onions from seeds using the high-quality gardening supplies available at your local Garden Centre in Vancouver.

1. Understanding Green Onions (Scallions)

Green onions (Allium fistulosum) are a perennial onion variety that does not form large bulbs like traditional onions. Instead, they develop long, slender green leaves and small white roots. They are commonly used in salads, soups, and garnishes.

 Why Grow Green Onions from Seeds?

• More cost-effective than buying transplants
• Allows for better control over variety and growth conditions
• Adaptable to both outdoor gardens and container gardening

2. Best Time to Plant Green Onions in Canada

When to plant green onions in Vancouver and other parts of Canada depends on the climate and growing conditions. Green onions are cold-hardy and can tolerate light frost, making them suitable for Canada’s diverse climate. Here’s the recommended planting schedule: Green onions are cold-hardy and can tolerate light frost, making them suitable for Canada’s diverse climate. Here’s the recommended planting schedule:

• Early Spring (March – May): Directly sow seeds into the ground once the soil is workable and temperatures are above 5°C.
• Late Summer to Early Fall (August – September): Plant a late-season crop that can overwinter in milder regions like Vancouver.
• Indoor Sowing (Year-Round): Start seeds indoors during the winter to transplant outdoors when the weather warms.

3. Choosing the Right Green Onion Variety

When selecting seeds for your garden, consider these popular green onion varieties:

• Evergreen Hardy White: A popular, cold-tolerant variety ideal for Canada.

• Tokyo Long White: Known for its long, slender stalks and mild flavor.

• Parade: A fast-growing variety with vibrant green leaves.

• Deep Purple: A striking purple-green onion that adds color to dishes.

4. Preparing the Soil

Green onions prefer well-draining, nutrient-rich soil. At our Garden Centre in Vancouver, we offer high-quality garden soil, compost, and organic fertilizers to ensure your onions thrive.

Soil Preparation Steps:

1. Select a Sunny Location: Green onions require at least 6 hours of sunlight per day.
2. Enrich the Soil: Mix in compost and well-rotted manure to boost fertility.
3. Ensure Good Drainage: Use raised beds or well-aerated garden soil to prevent waterlogging.
4. Soil pH Check: Aim for a slightly acidic to neutral pH (6.0 – 7.0). You can test and amend soil with lime or sulfur as needed.

5. Planting Green Onion Seeds

Green onion seeds are tiny and require careful sowing. Follow these steps for optimal germination:

Direct Sowing in Garden Beds:

1. Create shallow furrows about ¼ inch (6 mm) deep.
2. Sprinkle seeds thinly along the row, spacing them about 1 inch (2.5 cm) apart.
3. Lightly cover with soil and gently press down to ensure contact.
4. Water gently but thoroughly to keep the soil moist.
5. Thin seedlings to 2 inches (5 cm) apart once they emerge to allow space for growth.

Indoor Sowing for Transplanting:

1. Fill seed trays or containers with seed-starting mix (available at our Garden Centre).
2. Sow seeds about ¼ inch deep and mist with water.
3. Keep the tray in a warm location (18-21°C) with indirect sunlight.
4. Transplant seedlings outdoors once they reach 3-4 inches tall.

6. Caring for Green Onions

Green onions require minimal maintenance, making them ideal for beginner gardeners.

Watering:

• Keep soil consistently moist but not waterlogged.
• Water deeply once or twice a week, depending on rainfall and temperature.

Fertilizing:

• Use a balanced organic fertilizer or compost tea every 3-4 weeks.
• Avoid high nitrogen fertilizers, which can result in excessive leaf growth with weak roots.

Mulching:

• Apply a thin layer of straw or compost to retain moisture and suppress weeds.

Pest and Disease Management:

• Onion Maggots: Use floating row covers to protect young plants.
• Fungal Diseases: Avoid overhead watering and ensure proper spacing for air circulation.
• Aphids: Wash off with a strong stream of water or use neem oil spray.

7. Harvesting Green Onions

Green onions can be harvested multiple times throughout the growing season.

Harvesting Tips:

• Early Harvest: When plants reach about 6 inches tall, cut leaves at the base and allow regrowth.
• Full Harvest: Pull entire plants once they reach maturity (about 8-10 weeks after planting).
• Continuous Harvest: Trim leaves as needed, leaving roots in the soil for regrowth.

8. Growing Green Onions in Containers

If you have limited garden space, green onions thrive in containers on balconies or patios.

Container Gardening Steps:

1. Choose a deep container (6-8 inches) with drainage holes.
2. Fill with potting mix (available at our Garden Centre).
3. Sow seeds as described above.
4. Keep the container in a sunny location and water consistently.

9. Overwintering Green Onions in Canada

In milder regions like Vancouver, green onions can survive the winter with proper care.

• Apply a thick layer of mulch (straw or compost) to insulate the roots.
• Cover with row covers during extreme cold spells.
• In harsh winter regions, grow green onions in cold frames or indoors.

10. Common Problems and Solutions

Issue	Cause	Solution
Yellowing leaves	Overwatering or nutrient deficiency	Reduce watering, apply compost tea
Thin stalks	Lack of sunlight	Ensure 6+ hours of sun exposure
Bolting (flowering)	High temperatures or plant age	Harvest before flowering stage

Final Thoughts

Growing green onions from seeds is an easy and rewarding experience, especially when using high-quality seeds, soil, and compost from our Garden Centre in Vancouver. Visit our online store or stop by our Garden Centre to explore our selection of premium gardening supplies and start your green onion-growing journey today! With the right conditions and care, you can enjoy fresh, homegrown scallions throughout the year.

Visit our Garden Centre today to get premium seeds, organic compost, and gardening supplies for your green onion-growing journey!

Exclusive Offer from DH GARDEN CENTRE

Whether you’re looking for a trusted Vancouver garden centre, want to buy indoor plants in Vancouver, or need premium gardening supplies in Kitsilano, DH Garden Centre ensures your garden thrives. Get ahead in your gardening journey with DH Garden Centre, recognized as the best plant store in Vancouver. We offer unparalleled expertise to help you achieve your gardening and landscaping goals. For a limited time, enjoy a free gardening consultation and receive 20% off your purchase.