No products in the cart.
End of December Cannabis Seeds
Active filters
Breeders
Price
د.ك -
Seed Type
Stock Availability
Available As Single
Most Popular Seeds
On Sale
Flowering Period Type
Indica / Sativa
Cannabinoid Profile
Environment
Strength
Yield
Indoor Height
Experience Required
Hardiness
Strain Type
Medical Strains
Cup Winner
Indoor Flowering Time
Outdoor Harvest Time
Smell / Taste
End of December outdoor harvest time cannabis strains are those where breeders mark an approximate outdoor harvest window around the end of December on their seed datasheets.
These are usually long-flowering genetics – often sativa-leaning lines or hybrids built for drawn-out maturation – that need the full autumn season and sometimes beyond to finish.
Most outdoor cannabis harvests in the Northern Hemisphere reportedly wrap up by late October or early November, but strains labelled for end-of-December harvest keep going well into late autumn or early winter.
Read MoreWhere these strains evolved
Ever wondered why some cannabis genetics take so long to finish? Strains marked for end-of-December outdoor harvest mostly come from equatorial and subtropical breeding scenes where long, warm summers let sativa genetics do their thing.
Landrace sativas from regions near the Equator – places like Southeast Asia, Central and South America, and parts of Africa – naturally show the longest flowering times, sometimes stretching 14 to 20 weeks.
Breeders working in warm-climate zones like Northern California's Anderson Valley or Mediterranean coastal areas have spent years selecting and refining these genetics, creating hybrids that keep those extended flowering cycles whilst adding a bit more toughness for cooler nights and changeable autumn weather.
The result is a collection of strains that complete their lifecycle well after the traditional autumn harvest window closes.
Standout examples of end-of-December outdoor harvest strains
What strains do breeders report actually push into December outdoors? Super Silver Haze is one of the most celebrated sativas for late-season outdoor finishing.
In Northern California's Anderson Valley, legal growers wait until late November or even December to harvest this strain, enduring increasingly wintry weather to capture its full maturity.
Chocolate Thai, a Southeast Asian landrace, requires up to 14 weeks to flower and presents a challenge for outdoor legal growers in temperate zones, often pushing harvest into December if conditions allow.
DJ Short's sativa lines are also said to demand patience – whilst his famous Blueberry indica finishes in October, his sativa strains require another one to two months, placing them squarely in the late-November to December window.
Colombian Gold, Dr. Grinspoon, and San Francisco Valley OG are said to be notoriously tricky strains with extended outdoor flowering periods.
Durban Poison, a photoperiod feminised strain gets recommended a lot for late summer starts, and can extend into December in Mediterranean-style climates where legal growers benefit from long, warm seasons.
Frisian Dew, a Dutch outdoor strain and cannabis cup winner, is tough and resilient – it's mostly ready around late September or early October in the Northern Hemisphere, but in milder regions with extended seasons it is planted later and harvested closer to December.
Auto Mazar, featuring prize-winning Afghani Kush genetics, takes around 100 days from seed to harvest and delivers a great hashy taste. when started late in warm climates, it can finish in December.
Legal growers in Mediterranean-style regions can harvest cannabis in November and December, allowing late summer outdoor grows with long-blooming sativa photoperiod strains that would struggle in colder zones.
Autoflower seeds can also finish in December. Pure sativa strains need 10 to 14 weeks flowering indoors and can harvest early to mid-November outdoors, but in regions with sufficiently mild winter conditions, these timelines extend into December.
End-of-December harvests are achievable only in regions with mild winter conditions that permit continued plant maturation beyond typical autumn timelines, or in the Southern Hemisphere where seasons are reversed and December falls in summer.
End of December Frequently Asked Questions
It means the breeder reckons that, when grown outdoors, the strain will reach maturity around the end of December. It's a guideline based on typical conditions and the strain's flowering cycle, not a fixed date.
These strains usually carry long-flowering sativa genetics or hybrids built for extended maturation cycles. Sativas from equatorial regions naturally require 14 to 20 weeks to flower, pushing harvest into late autumn or early winter.
They mostly trace back to equatorial and subtropical breeding scenes – Southeast Asia, Central and South America, parts of Africa, and warm-climate zones like Northern California's Anderson Valley and Mediterranean coastal areas.
Super Silver Haze, Chocolate Thai, DJ Short's sativa lines, Colombian Gold, Dr. Grinspoon, San Francisco Valley OG, Durban Poison, Frisian Dew, and Auto Mazar are all examples that can reportedly finish around or into December in suitable climates.
Most are sativa-leaning or pure sativas, as these genetics naturally require longer flowering periods. Some hybrids and autoflowers can also reach December harvest when planted by legal growers late in warm climates.
Only in regions with mild, extended growing seasons where frost and heavy rain arrive late. Most Northern Hemisphere growers finish by late October or early November. December harvests are uncommon outside warm-climate zones.
In the Southern Hemisphere, seasons are reversed, so December falls in summer. Legal growers there can harvest in December as part of their normal autumn cycle, which runs from March to May.
Yes, a late-start cycle can finish in December.
They're bred or selected for extended flowering cycles and toughness against cooler nights and changeable autumn weather, allowing them to complete maturation well after the traditional harvest window closes.
Check the breeder's datasheet for the approximate outdoor harvest window.