Description
Black Truffle Feminized strain data sheet
| Genetics | Gelato 33 x undisclosed Truffle line parent (most seed lines) |
|---|---|
| Type | Indica dominant hybrid (60/40) |
| THC | 20%–27% |
| CBD | Under 1% |
| Flowering time | 8–9 weeks (56 to 65 days) |
| Outdoor harvest | Late September to early October |
| Height indoor / outdoor | 90–150 cm / up to 200 cm |
| Yield indoor / outdoor | 450–600 g/m² / 600–900 g per plant |
| Difficulty | Moderate |
| Climate | Warm and steady; humidity 50% to 55% in early flower, lower at the finish |
| Best for | Evening use, dark bag appeal, earthy dessert flavour |
Black Truffle Feminized at a glance: Black Truffle is a 60/40 indica leaning hybrid, usually Gelato 33 crossed with a Truffle line parent, that flowers in 8 to 9 weeks, tests 20% to 27% THC, grows 90 to 150 cm indoors and yields 450 to 600 g/m² of dense, dark, frosted buds with a coffee, grape and spice aroma.
Real truffles are imported; these seeds are not
The fungus Black Truffle is named after usually reaches Canada by air freight from Europe. The seeds do not have to. We keep them in our Vancouver, BC seed bank and send them in plain packaging on domestic routes only, so they arrive anywhere in the country in 3 to 7 business days with no customs declaration. Every batch is viability tested before it is packed and covered by our 80% germination guarantee, and the 10 and 25 seed packs are buy one get one free.
Where Black Truffle comes from
Black Truffle is one of several strains that grew out of the “Truffle” family, a group of Gelato-based hybrids from the late 2010s and early 2020s named for their earthy, savoury depth. The version sold as seed most often is Gelato 33, the Larry Bird cut, crossed with a parent the original breeder never disclosed; strain databases suspect another Truffle line plant, and the flavour supports that.
The name has also been used for other genetics, which is worth knowing before you compare notes online. A separate Black Truffle made from White Truffle and Pure Michigan is sold as flower in some Canadian legal stores, and it smells gassier and more rubbery than the Gelato version. Black Truffle Butter is a different strain again. The seeds on this page are the Gelato 33 line, which is the one most seed growers mean.
Either way, the name fits: the finished buds are dark, the aroma is earthy and rich, and the strain sits closer to a savoury dessert than a candy one.
Black Truffle strain effects and experience
Black Truffle is a creeper. The first twenty to forty minutes feel focused and gently creative, the kind of state where a film or a long conversation is easy to follow. Then the indica side rolls in: shoulders drop, limbs feel heavy and the evening slows down. Most people report two to three hours in total, ending in a drowsy, contented state.
Because it builds slowly, the common mistake is taking more before the first dose has arrived. At 20% to 27% THC, a single small session is enough for most people. It is not a strain for the middle of a working day.
Black Truffle flavour, aroma and appearance
The aroma is where Black Truffle earns its name. Break a bud and you get spiced coffee and damp earth first, then a sweet grape and blueberry note, with a cocoa and diesel undertone once it is ground. The smoke is thick and smooth: roasted, sweet and a little peppery on the inhale, dark berry and chocolate on the exhale. Caryophyllene leads the terpene profile, which explains the spice and the warmth, with limonene and linalool keeping the finish from turning heavy.
Buds are dense and rounded, deep olive to near-black green with purple streaks, thin orange pistils and a thick frost that stands out against the dark calyxes. In a cool finish some phenotypes go almost entirely purple.
Growing Black Truffle in Canada
Indoors
Black Truffle grows like a Gelato: medium height, lots of lateral branching and a stretch of about 1.5 times. Veg for four weeks and flip at 45 to 55 cm to finish between 90 and 150 cm. It prefers stable conditions, 22 to 27 degrees by day and 17 to 20 at night, with humidity at 50% to 55% in early flower dropping to 45% for the last three weeks. Feed at moderate strength and watch for the tip burn that Gelato lines show when pushed. Most plants finish between day 56 and day 65.
Outdoors, by region
An 8 to 9 week bloom lets Black Truffle finish across most of southern Canada. On the BC coast and in the Okanagan, harvest lands in late September. In southern and eastern Ontario, a late May transplant finishes in the first days of October, and the cool nights of the last fortnight bring out the dark colour. In Nova Scotia and New Brunswick, pick the sunniest, most sheltered spot you have and keep a cover ready for early October rain. On the Prairies, germinate indoors in April and move the plant out in late May; it will be ready by the end of September in most years, and a fabric pot lets you roll it into a garage on a frost night.
Height and training
Top at the fourth node and spread the branches with ties or a net; Black Truffle fills a screen evenly and produces eight to twelve solid colas. Thin the interior leaves at the start of week three of flower. The buds are dense, so airflow matters more than light penetration, and our guide to managing humidity for cannabis is worth reading before week six.
Flowering and harvest cues
Watch the calyxes darken from week six; that colour change is the sign that the plant is entering its final stretch, not that it is finished. Check trichomes from day 56 and cut when most are cloudy with 10% amber for the fullest effect. Dry for 12 to 14 days at 60% humidity. The coffee and cocoa notes deepen noticeably after three weeks of cure.
Black Truffle yield indoors and outdoors
Indoors, a screened canopy produces 450 to 600 g/m², and the dense buds keep most of their weight through drying. Outdoors, a full-season plant in a 60 litre pot or in the ground gives 600 to 900 g dried in a good year on the coast, and 400 to 600 g in a shorter Prairie season. It is heavier than most dessert strains, which is a big part of its appeal.
Who Black Truffle is for, and who should pick something else
Grow Black Truffle if you like dark, earthy flavours more than candy, if you want an evening strain with real weight in the jar, or if you enjoy watching a plant change colour in a Canadian autumn.
Pick something else if you want a daytime strain, if you are growing for the first time and would rather not manage humidity in dense buds, or if you prefer the lighter, creamier side of the family, where Gelato 33 is the better choice.
How Black Truffle compares
Gelato 33, its known parent, is sweeter, lighter and more balanced in effect, with a similar size and finish. Gelato is the family classic, creamy and berry-sweet without the coffee depth. Pure Michigan is one parent of the other Black Truffle circulating in Canada, and it brings the gas and earth that version is known for. Among our indica feminized seeds, Black Truffle is the pick for growers who want colour and a savoury dessert profile in one plant.
Frequently asked questions about Black Truffle
Is Black Truffle indica or sativa?
Black Truffle is an indica dominant hybrid, roughly 60% indica and 40% sativa. It starts with a focused, creative head effect and then settles into a heavy, relaxing body feel that suits the evening. The plant grows like a medium Gelato hybrid with strong side branches.
What is Black Truffle strain crossed with?
Most Black Truffle seed lines are Gelato 33 crossed with an undisclosed parent, believed to come from the Truffle family. Another plant sold under the same name is White Truffle crossed with Pure Michigan. Our feminized seeds are the Gelato 33 line.
Is Black Truffle a strong strain?
Yes, Black Truffle usually tests between 20% and 27% THC with less than 1% CBD. It is also a slow starter, taking twenty to forty minutes to show its full effect, so wait before having more. Most people find one small session lasts two to three hours.
What does Black Truffle strain taste like?
Black Truffle tastes like spiced coffee and dark berry, with grape, chocolate and a light pepper on the finish. The spice comes from a caryophyllene-led terpene profile. A slow dry and a cure of at least three weeks bring the coffee and cocoa notes forward.
What to expect from a pack of Black Truffle, and how we back it
A pack of Black Truffle from MJ Seeds Canada is feminized seed from the Gelato 33 line, stored in our Vancouver, BC seed bank and viability tested before it ships. We have run that process since 2009. The parcel is plain and unbranded, travels only inside Canada and arrives in 3 to 7 business days. Orders over $200 ship free, and $30 buys tracking, insurance and one free reshipment if the parcel is lost.
Use the cup of water and paper towel method from our germination guide and the 80% germination guarantee applies to your pack. Black Truffle is sold in 5, 10 and 25 seed packs, and the 10 and 25 packs are buy one get one free, so you can match it with a lighter dessert strain of the same size. Spend over $420 and we add 10 free seeds.
Payment is by Interac e-Transfer, credit card, Bitcoin or cash, and the support team in Vancouver takes calls, emails, WhatsApp messages and live chats every day of the week.





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