With the summer growing season in full swing, many of you have reached out asking what's the optimal time to start an outdoor cannabis grow. Check out some recommendations based on different regions where marijuana cultivation is popular. Growing cannabis is a lot like growing anything else. And as you would with most seed germinating, just follow the spring equinox…for the most part. The equinox falls in March, and while that might mean outdoor germination time in Arizona or California, Colorado is still liable to have snow through April and even May. Buy Cannabis Seeds – Trying to find out the best time to plant Marijuana seeds outdoors? Here's more information – Amsterdam Seed Supply
What’s the Best Time to Start an Outdoor Cannabis Grow?
I t’s amazing how quickly the world can change, isn’t it? In the past 25 years, cannabis has moved from an illicit substance relegated to the shadowy corners of the illicit market to an “essential” industry amid COVID-19. In many states, local cannabis laws allow you to grow your own, and why not? When you grow your own, you can do your own quality control, know the purity of your product, and manage your own supply.
Luckily, you can start your own grow in a container as small as a flower pot. If you’ve got some space in your yard to grow weed outdoors, even better. So this may leave you wondering, when should I plant my cannabis outdoors? Luckily, there are some general date ranges to help guide your growing plans.
Regardless of which climate you’re starting in, when Spring Equinox comes around, start germinating your seeds. Make sure those plants get outside by Summer Solstice in June, then harvested around Fall Equinox.
For more specifics about how to protect your outdoor cannabis grows from the elements or whether you should grow indoors, outdoors, or in a greenhouse, check out the linked articles. Better yet, look into a book by celebrated cannabis growers like Ed Rosenthal’s Marijuana Grower’s Handbook, and of course, every green thumb’s favorite, The Farmer’s Almanac.
For a (shallow-ish) deeper dive into what to expect when growing cannabis outside, here’s a look at optimal grow times for regions across the U.S.
When to Grow Weed Outdoors by Region
Northwest (Northern CA, OR, WA)
When you grow outdoors in this loamy region you’ll never have to worry about getting enough rain. However, mold development and lack of sunshine can make growing outside a more difficult proposition.
Hybrids that flower earlier are suggested as the most successful grows, especially in Washington and Oregon. California plants can be put in the ground earlier due to the region’s warmer weather. Your best clue indicating that it’s time to start your outside grow is when daylight hours increase and the temperature starts to warm.
- Preparing Your Colorado Soil for an Outdoor Marijuana Grow
- How Long Does it Take to Grow Cannabis Plants?
- The Best Strains to Grow Outdoors
- The Flowering Stage Of Cannabis Week By Week
Midwest (IL, MI, Eastern CO)
This region is tricky because the weather is highly variable; rainy and muggy, and/or hot and dry. Winter may come early to this region, so choosing an indica-dominant hybrid strain might be your best bet, since their flowering times are shorter. Try to shoot for germination after the final frost of spring has passed in these regions.
Northeast (NY, MA, ME, VT)
With its rich soils and abundance of water, the northeast region can be a great place to grow cannabis outdoors, especially if you choose an early harvest strain that can finish up before fall kicks in. The best time to move your plants outside in this region is the middle of April, when days are longer.
Southwest (Southern CA, NV, AZ, NM, CO)
If you choose to grow outdoors in this scorching climate, be prepared to pay attention to the temperature, where highs that regularly exceed 100 degrees Fahrenheit will slow your plant’s growth. Sativas and sativa-dominant hybrids do well in this environment because of their lineage tracing back to the equator, where the weather is uniformly hot.
However, the dryness of the region means you’ll also have to carefully monitor your watering routines. Before moving your plants outside, make sure the last frost has passed. This last note is especially important in this region, as sudden, sporadic snowfall is common, so keep an eye on the weather.
Though home cultivation is not yet allowed in the Sunshine State, many new medical producers getting into the industry are starting to grow outdoors, and there are a few things to be aware of if you’re licensed in the industry. The temperatures in Florida might be good for cannabis growing, but the humidity definitely is not.
In fact, because of all that moisture in the air, it’s best to avoid indica strains and grow sativas instead to avoid the mold that inevitably comes along with humidity. In this region, you could start the germination process as early as February. Just make sure that the last frost has passed before moving plants outside.
Of course, there are many different factors that go into the timing of an outdoor grow, and the weather will shift year-to-year. Use these estimates as rough guidelines and adjust as needed. Happy growing!
What’s the best time to plant outside in your area? Share in the comments!
Erin Hiatt is a New York City-based writer who has been covering the cannabis industry for more than six years. Her work – which has appeared in Hemp Connoisseur Magazine, PotGuide, Civilized, Vice, Freedom Leaf, MERRY JANE, Alternet, and CannaInvestor – covers a broad range of topics, including cannabis policy and law, CBD, hemp law and applications, science and technology, beauty, and psychedelics.
Erin’s work and industry insights have been featured on the podcasts The Let’s Go Eat Show, In the Know 420, and she has appeared as a featured panelist on the topic of hemp media. Erin has interviewed top industry experts such as Dr. Carl Hart, Ethan Nadelmann, Amanda Feilding, Mark A.R. Kleiman, Dr. James Fadiman, and culture icons Governor Jesse Ventura, and author Tom Robbins. You can follow her work on LinkedIn, WordPress, @erinhiatt on Twitter, and @erinisred on Instagram.
Ask a Stoner: When Should I Plant Seeds Outdoors?
Dear Kendal: Growing cannabis is a lot like growing anything else. Give it space, light, water, occasional protection from bad weather and maybe some nutrients, and it takes care of itself. And as you would with most seed germinating, just follow the spring equinox. for the most part. This year, the equinox falls on March 20, and while that might mean outdoor germination time in Arizona or California, Colorado is still liable to have snow through April and even May.
Freezing temperatures can kill seeds, so the best bet is to germinate them inside until the late snow passes.
Such cold temperatures can kill seeds, so the best bet is to germinate them inside until the late snow passes. If you’re only growing a few plants, this can be done in front of a sun-facing window. If you want to grow a lot, though, you’ll probably need to buy a growing light. Then transplant those baby weed plants outside before the summer solstice on June 20 (start watching weather forecasts after Mother’s Day). And go with a strain that has a short flowering time — because Colorado’s unpredictable snow usually returns in October.
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When To Plant Marijuana Seeds Outdoors?
You’re not the only one wondering when to plant Marijuana seeds outdoors. Although it is a question that doesn’t have only one answer. Depending on what part of the world you live, the ideal conditions to plant marijuana seeds outdoors would be in the spring, between March and May (in the northern hemisphere). Ideally, during this time, your marijuana seeds should already be germinated and you can even plant marijuana seedlings that are a few weeks old outdoors. As we have mentioned in our other guides, to plant marijuana seeds outdoors is a numbers game. The more marijuana seeds you plant outdoors (if you don’t have the experience) the better your germination rates and eventual harvest will be. For Northern hemisphere climate conditions we don’t recommend to plant marijuana seeds outdoors, rather germinate and start growing the marijuana plant indoors until the weather conditions are ideal to take the marijuana plant outdoors.
When to plant marijuana seeds outdoors depends on the weather where you live
If you live in a place that has a constant good weather then the season isn’t very important to take into consideration for you to plant marijuana seeds outdoors. In places with less abundant sunshine, the season would last roughly from March to August or September depending if it’s an Indica or a Sativa marijuana plant. In other regions such as equatorial or coastal regions, the issue of when to plant marijuana seeds outdoors is non-existent since the constant warmth and humidity will germinate the marijuana seeds outdoors without any worries of the conditions being too harsh for the seedlings, or not enough humidity and warmth for the marijuana seed.
You could also find our FAQ Submission How Germinate Cannabis Seeds? useful.