Top Canadian Seed Starting Supply Stores You Need to Use in 2026

Starting seeds indoors during winter is a smart way to get a head start on your garden. With the right supplies, you can nurture healthy seedlings that will thrive once the weather warms up. Finding quality products for seed starting can be overwhelming, especially with so many options available both online and locally. This guide highlights some of the best places to purchase everything you need to start your indoor seed garden this winter.

Seed starting trays with young seedlings

Why Starting Seeds Indoors Matters

Indoor seed starting allows gardeners to control the environment during the critical early growth stages. This means you can:

• Extend your growing season by several weeks

• Choose from a wider variety of plants, including those not locally available

• Save money by growing plants from seeds instead of buying seedlings

• Improve plant health by giving seedlings a strong start

  
  

To achieve these benefits, you need the right supplies: seed trays, quality potting mix, grow lights, heating mats, and of course, good seeds. Knowing where to find these items is key to a successful indoor garden.

Best Canadian Online Stores for Seed Starting Supplies

Here are some top online stores known for quality seed starting supplies and seeds.

1. West Coast Seeds

West Coast Seeds are proud to provide the highest quality selection of seeds, ethically sourced from sustainable growers around the globe. Our independent, government-certified seed laboratory conducts regular, intensive trials to ensure that our seeds meet or exceed the Canada Number One germination rate. West Coast Seeds only offers non-GMO seeds, suitable for organic growing and never chemically treated.

Here are their links to their incredible Seed Catalogue

• Vegetables

• Flowers

• Herbs

• Fruits

• Indoor & Speciality

Their vast list of supplies and their links are as follows :

1. Bird Seeds & Feeders

2. Mulches

3. Pest Controls

4. Plant Labels

5. Plant Supports

6. Seed Sowing Tools

7. Seeds Trays, Covers & Plugs

8. Soil Amendments

9. Soil Blockers

10. Soil Testing

11. Sprouting Equipment

12. Watering

13. Composting Tools

14. Container Gardening

15. Crop Protection

16. Fertilizers

17. Garden Wear

18. Garden Wear and Gifts

19. Hand Tools

20. Harvest Tools

21. Lighting

    
    

Their website provides detailed growing guides, which are helpful for beginners.

2. Halifax Seed Company

Halifax Seed Company Inc., Canada's oldest continuously operating family owned seed company, was established in 1866. Now on Kane Street in Halifax, the company once occupied a waterfront location on the city's famous harbour. When the town was damaged by a massive explosion in 1917 (the Halifax Explosion) the company then moved to Granville Street. Evidence of the historic location on Granville Street are still found on the door step. Today Halifax Seed has 2 retail locations, one in Halifax, NS and the other in Saint John, NB. 

Their online store features Seeds, Garden Supplies, Lights and much more, here are their links.

• Garden Seed

• Garden Supplies

• Lawn Care

• Houseplant Care

• Indoor Growing

• Environmental Controls

• Grow Lights

• Grow Tents

• Growing Media

• Insect Management

• Nutrients and Supplements

• Organic Growing

• Propagation and Seed Starting

• Tools and Supplies

They even have a section dedicated to Canadian Growing Supply Companies

3. Lee Valley Tools

Designed to meet the needs of novice and experienced gardeners alike, our comprehensive selection of plant propagation supplies includes seed-starting equipment such as soil cube molds, domes, trays, coir pellets, fiber pots, self-watering propagation systems and deep-root seed starters. Look for grafting supplies as well as seed-sprouting accessories. To make planting easier and more efficient, you’ll find helpful products for hand-planting tiny seeds as well as a seeder for planting larger outdoor gardens.

• Deep Rooted Seed Starter Trays

• Soil Blockers

• Propagation Trays

• Hemp-Fiber Grow Mats

• Mini Wand Seeders

  
  

They also provide expert advice and customer reviews to help you pick the right products.

4. Dubois Agrinovation

Dubois Agrinovation is proud to be North America's leading provider of horticultural solutions and custom irrigation systems for farmers and home gardeners. With 65 years of experience, we've built our reputation by offering products and services of exceptional quality.

Our team of experts possess unrivalled expertise in the field to design tailor-made solutions for your specific needs. This know-how is backed by a diverse range of horticultural products and irrigation systems for every size of operation, from large-scale farms to residential gardens. We are committed to being your partner of choice for all your projects, offering you active listening, exceptional versatility, and remarkable efficiency to deliver innovative solutions. Whether you're a home gardener, field market gardener, diversified organic market gardener, berry producer, nursery or tree grower, greenhouse or vertical farmer, orchard or vineyard operator, we've got you covered!

Dubois Agrinovation has a vast inventory of products for your entire home garden and here are the links for the seed starting and propagation portion of your season.

• Domes and propagation trays 13 items

• Multicell trays 4 items

• Seeds 126 items

• Labels 4 items

• Lighting systems 8 items

• Pots 7 items

• Seedling heat mats 3 items

• Seeding and transplanting 5 items

• Seeding accessories 6

  
  

They even have a Canadian Products section found here : Canadian Products

Local Stores ( Windsor-Essex County ) Where You Can Find Seed Starting Supplies

Shopping locally lets you see products firsthand and get personalized advice. Here are some local stores to explore.

1. Urban Greenhouse Hydroponics

• Seed trays and pots in different sizes

• Potting soil blends suitable for seedlings

• Grow lights and heating mats

• Seeds adapted to your regional climate

  
  

3. The Downtown Windsor Farmers Market

(Windsor-Essex County, Ontario Canada)

here you will find vendors such as :

Our Farm Organics

Bouchard Gardens

East Beach Flower Farm

Mrs Fruit Wagon

Garant Greens

All selling plants, soil, pots, bedding plants, herbs, flowers & much more.

• Heirloom and regionally adapted seeds

• Advice on starting seeds indoors

• Sharing or trading seed starting materials

  
  

These community options support sustainable gardening and connect you with experienced growers.

What to Look for When Buying Seed Starting Supplies

Choosing the right products can make a big difference in your seed starting success. Keep these tips in mind:

• Seed trays and pots: Look for trays with good drainage and reusable options to reduce waste.

• Soil mix: Use a light, well-draining seed starting mix, not regular garden soil.

• Seeds: Select seeds suited for indoor starting and your climate zone.

• Lighting: Seedlings need 12-16 hours of light daily; LED grow lights are energy-efficient and effective.

• Heating mats: These help maintain consistent soil temperature, speeding up germination.

  
  

Tips for Buying Seeds Online and Locally

• Check seed packet dates to ensure freshness.

• Read product reviews and ratings.

• Buy from reputable sellers with clear return policies.

• Consider starting with seed kits if you are new to indoor gardening.

• Look for organic or non-GMO seeds if you prefer natural gardening methods.

  
  

Final Thoughts on Starting Your Indoor Seed Garden This Winter

Starting seeds indoors gives you control over your garden’s beginning and can lead to healthier, more productive plants. Whether you choose to shop online or locally, focus on quality supplies that fit your needs and budget. Online stores like Johnny’s Selected Seeds and Burpee offer convenience and variety, while local garden centers and specialty shops provide hands-on support and regional expertise.