
Posted on October 21, 2025 by MOM Index Staff
How to Grow Weed in Ontario
Growing weed in Ontario is one of the most rewarding hobbies for cannabis lovers. The province’s climate, combined with Canada’s progressive cannabis laws, gives home growers a chance to cultivate their own supply while learning more about the plant. Whether you’re setting up a small indoor grow tent or taking advantage of Ontario’s sunny summers, this guide breaks down everything you need to know to grow weed successfully — legally and confidently.
Understanding Ontario’s Cannabis Climate
Ontario’s growing season is relatively short compared to western provinces, but the fertile soil and warm summers make it perfect for outdoor grows. The key is timing: most outdoor growers start their seedlings indoors around April and move them outside after the last frost, typically mid-May.
If you’d rather skip the weather worries, you can always grow indoors using controlled lighting and ventilation. Many enthusiasts also mix both — growing a few outdoor plants for volume and keeping indoor ones for year-round supply.
For those who’d rather skip the entire growing process but still enjoy high-quality cannabis, BudDelivery offers premium flower and edibles delivered straight to your door anywhere in Ontario.
Legal Limits for Growing Weed in Ontario
Adults aged 19 and older can legally grow up to four cannabis plants per household in Ontario for personal use. It’s important to note this limit applies to your household — not per individual.
You don’t need a license to grow, but exceeding the legal limit can result in fines or charges. Keep your plants in a private, secure area, especially if you share your space with others or have children at home.
If home growing sounds like too much effort, you can always explore BudDelivery’s mail-order dispensary for high-grade flower, concentrates, and THC vapes that meet every preference.
Choosing the Right Strain
Picking the right strain can make or break your grow. Ontario’s unpredictable weather means hardy, mold-resistant strains are best for outdoor gardens, while denser, resinous hybrids thrive indoors.
For Outdoor Growing
Look for Indica-dominant strains like BC Bubba Kush or Comatose AAAA. These plants tolerate Ontario’s cooler nights and shorter flowering periods. You can find both available from BudDelivery’s premium flower section.
For Indoor Growing
Indoor growers have total control over conditions, making it easy to experiment with stronger hybrids like Pink Gas AAAA or Grey Goose AAAA. Controlled environments also let you fine-tune lighting and feeding schedules to maximize THC content and flavour.
Setting Up Your Grow Space
Indoor Growing Setup
A good indoor grow requires a few essentials:
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A small grow tent or ventilated space
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LED or HPS grow lights
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Fans or exhaust systems for airflow
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Temperature and humidity controls
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Nutrient-rich soil or hydroponic setup
Keep temperatures around 22–28°C during the day and slightly cooler at night. Maintain 50–60% humidity during vegetation and lower it to 40–45% once flowering starts.
Indoor growing allows you to harvest multiple times a year, something Ontario’s outdoor climate can’t match.
Outdoor Growing Setup
Choose a sunny location that gets 6–8 hours of direct sunlight daily. Ontario’s native soil can be heavy with clay, so amend it with compost or coco coir to improve drainage.
Keep plants spaced out for proper airflow and use natural pest deterrents like neem oil. For extra support during windy days, use stakes or tomato cages.
From Seed to Seedling
Start your seeds indoors to protect them from cold weather and pests. The paper-towel germination method is easy:
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Moisten two paper towels.
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Place your seeds between them.
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Store in a warm, dark space for 3–5 days.
Once small roots emerge, transfer them to small pots filled with light soil. Keep under gentle light for 18–20 hours a day. Avoid overwatering — cannabis roots prefer oxygen-rich soil and slight dryness between waterings.
Vegetative Growth: Building Strength
The vegetative stage focuses on stem and leaf growth. This is where you’ll set the foundation for large, healthy buds later.
During this phase:
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Provide 18 hours of light per day.
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Use nitrogen-rich nutrients.
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Train plants gently to spread branches evenly for better light coverage.
If you’re growing indoors, rotate your plants every few days to encourage even development. For outdoor growers, be ready to stake them as they start reaching for the sun.
Flowering Stage: Where the Magic Happens
Flowering begins when plants receive 12 hours of uninterrupted darkness daily. For outdoor growers, this typically starts around August.
During flowering:
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Switch nutrients to higher phosphorus and potassium blends.
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Keep humidity low to avoid mould.
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Inspect buds daily for pests or rot.
Strains like Death Cookies AAAA and Pink Gas AAAA are popular among Ontario growers for their dense, resinous buds that thrive during this stage. Both are available through BudDelivery’s AAAA collection.
Managing Ontario’s Weather
Ontario weather can shift fast — one week it’s humid, the next it’s chilly. Be prepared to act quickly.
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Use tarps or clear plastic covers during heavy rain.
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Harvest early if frost is forecasted.
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Avoid overwatering after storms — wet roots invite mould.
If you live in an unpredictable area, consider using large pots so you can move your plants indoors temporarily.
And for those who’d rather not battle the elements, you can always order weed online instead. BudDelivery offers top-shelf options that rival home-grown quality.
Harvesting and Curing
Timing your harvest is crucial. Look for:
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Trichomes turning cloudy or amber.
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Pistils darkening from white to orange.
Cut branches at the base and hang them in a dark, ventilated room for 7–10 days. When stems snap cleanly, buds are ready for curing.
Cure your buds by sealing them in glass jars, opening them daily to release moisture for the first week. After two weeks, your cannabis will be smoother and more aromatic — comparable to the quality found in BudDelivery’s premium strains.
Indoor vs. Outdoor: Which is Better for Ontario?
Outdoor Growing:
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Uses natural sunlight
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Lower cost
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Larger yields but weather-dependent
Indoor Growing:
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Full environmental control
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Multiple harvests yearly
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Higher cost but consistent results
Both methods can produce incredible results if done right. The choice comes down to space, time, and how much control you want over the process.
Common Mistakes New Growers Make
Even experienced growers slip up now and then. Avoid these pitfalls:
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Overwatering your plants
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Using the wrong pH level (keep between 6.0 and 7.0)
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Ignoring pests
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Harvesting too early
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Not giving plants enough airflow
If your plants don’t turn out as expected, don’t stress. You can always explore ready-to-enjoy options like AAAA-grade cannabis or THC vapes from BudDelivery while you refine your growing skills.
Winter Growing Tips
Ontario winters are too harsh for outdoor growing, but indoor setups thrive year-round. Keep your grow area warm (around 22°C) and monitor humidity carefully — dry winter air can stunt plant growth.
Many growers use small humidifiers to maintain balance, especially in heated rooms. LED grow lights are ideal for maintaining energy efficiency during the colder months.
If You’d Rather Buy Than Grow
Growing your own cannabis is rewarding, but it’s not for everyone. Between lighting costs, nutrient schedules, and space constraints, many people prefer the convenience of having premium cannabis delivered directly to their home.
That’s where BudDelivery.shop shines. They offer a full range of products including:
Each product is discreetly shipped and verified for quality — making it an excellent option for anyone who appreciates top-tier cannabis without the hassle of cultivation.
Final Thoughts: Growing Weed in Ontario
Growing weed in Ontario can be deeply satisfying, whether you’re cultivating for personal enjoyment or simply learning about the plant. From choosing hardy genetics to understanding Ontario’s unique weather, success comes down to patience and attention to detail.
Still, if you prefer enjoying expertly grown flower instead of managing your own grow, BudDelivery is always ready to supply high-quality cannabis and accessories delivered right to your doorstep.
So whether you grow it or order it, cannabis in Ontario is all about balance, quality, and enjoying the plant in whatever way fits your lifestyle best.
About the Author
This article was written by the MOM Index Staff, a dedicated team committed to providing reliable and up-to-date information about the Mail Order Marijuana (MOM) industry. Our goal is to help cannabis consumers make informed decisions by offering in-depth reviews, product guides, and insights into the best online dispensaries in Canada.
At MOM Index, we strive to ensure transparency and trust in the industry by verifying dispensary legitimacy, analyzing product quality, and keeping you updated on the latest trends, promotions, and legal developments. Whether you're a first-time buyer or a seasoned cannabis enthusiast, our expert research and community-driven insights aim to enhance your shopping experience.