If you’re planning to grow cannabis clones in Vaughan this spring, timing and strain choice are everything. Growing cannabis in Southern Ontario isn’t like flipping on a light switch — the season here is short, the weather unpredictable, and the window between the last frost and first frost is tighter than many growers realize.
In fact, most growers in Southern Ontario — including Vaughan — base their outdoor planting on the period after the last average frost date, which tends to fall around mid-May in this part of the GTA.
Between that last frost and the first real frost in early to mid-October, you’re working with roughly 150–160 frost-free days — and how you use those days makes all the difference between a strong harvest and a disappointing one.
This guide breaks down:
Check out our Outdoor Spring Bundle Pack 1 and Outdoor Spring Bundle Pack 2 or the best yield!
Let’s start with a grounded fact: Canada’s outdoor growing season is short compared to most other major cannabis-growing regions in the world (like California or Spain). In places like Vaughan, daylight hours after winter start climbing rapidly in March and April, but you still have to wait until the frost risk is mostly gone before putting plants outside.
That’s where clones — root-ready cuttings from a mother plant — shine.
According to the 2024 Canadian Cannabis Survey, among growers who reported growing cannabis at home, the average number of plants per household was around 3.4, and many growers in Ontario report similar grow counts — usually 3–4 plants per household.
That’s exactly the range where clones make sense: fewer plants, better genetics, faster growing.
Here’s a pro tip that separates the successful growers from the “wishful thinkers”:
👉 Order cannabis clones in mid-March to early April
👉 Begin outdoor transplanting once nighttime lows stay above ~10°C
Even if daytime temperatures reach the teens in April, Vaughan nights can still dip down to single digits well into May — and that’s stressful for young plants.
Experienced growers often keep their clones in a sheltered spot (garage, greenhouse, or indoors) for 2–3 weeks after delivery to help them build strength before facing outdoor temperatures.
Not all cannabis strains are created equal — especially outdoors in Ontario.
Because your outdoor window in Vaughan is limited by frost timing, most growers choose strains that:
Read more about best strains for spring here!
Here’s why this matters: if you pick a strain that needs 10–11 weeks to flower, you may end up harvesting in late September or October, risking cold, rain, and early frost.
A lot of Vaughan growers aim for curated options that balance finish time and performance, which is one reason curated selections like the Outdoor Spring Bundle Pack 1 and Outdoor Spring Bundle Pack 2 are popular — they take the guesswork out of strain selection for short outdoor seasons.
One big advantage Vaughan growers have is proximity to major GTA shipping routes. When you order from a reputable Canadian supplier, you can realistically expect:
Delivery in as little as 1–2 business days
(with proper packaging and care)
Here’s what healthy clones should look like on arrival:
Once your clones arrive, give them a 24-hour recovery period under gentle light before transplanting anywhere. This helps reduce shock and gives them a smoother transition to full outdoor life.
Here’s something no one warns you about until it happens: put clones outside too early, and they stall growth for a week or more — which in Vaughan is almost like losing a whole month.
❌ Planting clones in April
❌ Skipping hardening off
❌ Choosing slow-finishing strains
❌ Waiting too late to order (leaving April for “later”)
The reality of Canadian outdoor grows is that timing + strain choice = harvest success. Waiting for “warmer” weather can actually cost you time you can’t get back — especially in a region where the frost-free window averages only about five months.
✔ Order your clones in mid-March to early April
✔ Transplant outdoors only when nighttime lows are above ~10°C
✔ Choose fast-finishing strains (7–9 weeks)
✔ Consider curated options like the Maximum Yield Bundle Pack
✔ Hardening off is non-negotiable
✔ Don’t gamble your outdoor season timing — plan for it
Explore spring-ready cannabis clones and top outdoor bundles shipped directly to Vaughan and the GTA for the growing season.
After 30 years of mastering the craft of producing the best cannabis clones in Canada, we launched Mr. Clones to give home growers and professional cultivators convenient access to premier strain-verified cannabis clones. All information on this website is for general informational purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment.
