How to Grow Fat Bastard
Fat Bastard is an exceptionally potent, balanced hybrid feminized strain that crosses Goldmember with Monkey Spunk. It is a 50/50 hybrid with a very high 30-38% THC, a fruity flavor with a pungent, skunky edge, and a euphoric, powerful, relaxed effect. One of the strongest strains you can grow, it pairs heavyweight potency with a loud aroma, making it a standout plant to grow.
As a feminized photoperiod strain, Fat Bastard lets you control the grow: you keep it in vegetative growth under long days for as long as you like, then switch the lights to trigger flowering. It finishes flowering in about 8 to 10 weeks, and outdoors it is ready to harvest in October, giving you a compact, very resinous plant with a loud, fruity-skunky profile.
Recommended Strains
Fat Bastard
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THC | 30% - 38% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
Fat Bastard Auto
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THC | 30% - 38% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
Potent, heavy-yielding and beginner-friendly, Fat Bastard is a rewarding strain to grow. You can see the full genetics and buy Fat Bastard seeds on the strain page, and browse the rest of our feminized seeds alongside it.
Strain Profile at a Glance
| THC | High (30-38%) |
|---|---|
| Lineage | Goldmember x Monkey Spunk |
| Type | Feminized |
| Genetics | 50% Indica / 50% Sativa |
| Climate | Dry |
| Flowering time | 8-10 weeks |
| Harvest | October (outdoors) |
| Height | 4.92 ft / 1.5 m |
| Yield indoor | 1.31-1.97 oz/ft² (400-600 g/m²) |
| Yield outdoor | 24.69-31.75 oz/plant (700-900 g/plant) |
| Grow difficulty | Easy, beginner-friendly |
| Flavors | Fruity, Skunk |
| Effects | Euphoric, Powerful, Relaxed |
Promos & Deals
Vegetative Growth and Flipping to Flower
Fat Bastard is a feminized photoperiod strain, so it flowers in response to the light cycle rather than on its own schedule. You keep it in vegetative growth under long days, usually 18 hours of light to 6 of darkness, for as long as you want to build its size and structure. This is where you set the frame of the plant, so give it room, healthy roots and steady feeding before you make the switch.
When the plant is the size you want, you flip the lights to a 12/12 cycle, 12 hours of light and 12 of darkness, to trigger flowering. From that point it takes about 8 to 10 weeks to finish. Because it is a compact, balanced hybrid that stays around 1.5 m, it responds very well to training: topping and low-stress training during veg open the canopy and spread the bud sites, which lifts its already heavy yield.
Climate and Where to Grow It
Fat Bastard suits a warm, dry climate and grows well both indoors and outdoors where it gets strong light and low humidity. Because it is a photoperiod plant, outdoor growers should time it so it finishes in October, while indoor growers can run it year-round under a controlled light cycle. Its compact 1.5 m frame makes it easy to manage in a tent or in a sunny, dry outdoor spot.
Its very high 30-38% THC places it firmly among our high-THC seeds, and its sheer strength earns it a spot in our best high-THC seeds. Its even, balanced make-up sits naturally in our hybrid seeds, while its heavy, resinous, kush-leaning structure places it among our kush strains. Both of its parents, Goldmember and Monkey Spunk, feed into that pungent, high-potency profile.
On yield it is a heavy producer, giving around 400-600 g/m² indoors and a large 700-900 g per plant outdoors, so there is real weight here to go with the exceptional potency. Keep temperatures around 68-80°F (20-27°C) and humidity low through flowering so the dense, resinous buds ripen clean in its dry-weather window.
Feeding Schedule (EC Guide)
Fat Bastard is a resinous, vigorous plant that feeds moderately to fully, but build up gradually rather than pushing it from the start. Feed it steadily through veg, shift toward bloom nutrients as it starts flowering, then flush at the end so the fruity and skunky notes come through clean. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.5-0.7 | Light feed while roots establish |
| Vegetative | 1.2-1.6 | Build nitrogen as the plant grows |
| Early flower | 1.6-1.9 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.8-2.1 | Peak bloom feed for heavy, resinous buds |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Once flipped to 12/12, Fat Bastard flowers for about 8 to 10 weeks, and outdoors it is ready around October. It builds dense, frosty, resin-coated buds that develop a fruity aroma with a loud, pungent, skunky edge as they ripen. That mix of sweet fruit and heavy skunky funk is the signature of its Goldmember and Monkey Spunk heritage, and the thick coat of resin it packs on is one of its calling cards.
Yields are heavy, around 400-600 g/m² indoors and 700-900 g per plant outdoors on a well-grown specimen, so there is real weight to go with the extreme strength. Keep the dense colas supported and the canopy open so light reaches the lower sites, feed it well through flower, and harvest when most of the trichomes have turned cloudy with a few amber for the fullest fruity, skunky flavor and the most rounded effect.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15-18°C) and 55-60% humidity for 7-14 days, until the thin stems snap rather than bend. A slow, even dry matters with such dense, resinous buds, because they can stay damp in the middle while the outside dries, and a gentle dry protects the fruity and skunky aroma that defines the strain.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure is what brings out the full fruity-skunky character and smooths the smoke, turning a freshly dried harvest into the loud, high-impact result Fat Bastard is known for.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Fat Bastard is a very resinous, high-potency plant, so its trim is excellent for dry sift, bubble hash or rosin. That heavy resin and its fruity, skunky aroma make the trim genuinely valuable, turning offcuts into a potent, flavorful concentrate run rather than waste, a real bonus from such a strong strain.
Flavor and Terpenes
Fat Bastard leads with a fruity flavor and a loud, pungent, skunky edge, the bold profile it inherits from its Goldmember and Monkey Spunk parents. It is a full-bodied, characterful smoke, and a good cure brings that fruity-skunky character forward in the jar and on the inhale, with the pungent base giving it depth.
Its terpene profile frames that flavor. Caryophyllene adds a peppery, spicy warmth that drives the pungent side, while myrcene brings a soft, earthy, musky base underneath. Humulene rounds it out with an earthy, hoppy depth. The fruity sweetness itself comes through from its genetics, with these terpenes building the pungent, earthy frame around it.
Effects and Best Use
With its very high 30-38% THC and balanced 50/50 make-up, Fat Bastard delivers an exceptionally potent, well-rounded experience. It is reported as euphoric, powerful and relaxed, pairing a bright, intense lift with a comfortable, settled body. The potency here is at the very top end, so a measured dose goes a long way, especially for newer smokers who should start slow and build up.
That euphoric, powerful, relaxed profile makes it a natural choice for the late afternoon or evening, well matched to its fruity, skunky flavor. The combination of record-setting potency, a loud, distinctive taste and heavy yields is exactly why Fat Bastard stands out among high-THC hybrids.
Common Problems and Pro Tips
Fat Bastard is forgiving and beginner-friendly, but its dense, resinous buds and extreme potency come from heavy resin, so a clean, dry finish matters. In flowering, keep the air moving and humidity low so those tight, frosty colas ripen without trapping moisture at the heart of the bud. Its preference for a dry climate is worth respecting, since humidity is the main thing that can trouble a plant this resinous.
Training pays off here: because it stays compact, topping and low-stress training during veg open the canopy and spread the bud sites, which on such a productive plant adds up to a bigger, more even harvest. Support the dense colas as they fill out so the branches do not strain under the weight, and give the lower bud sites enough light to ripen evenly.
As a pro tip, feed it well through veg and early flower, then flush properly at the end so the fruity and skunky notes come through clean. Protect the terpenes with a full three to four week cure, save the very resinous trim for concentrates, and harvest when most trichomes are cloudy with a few amber for a rich, flavorful result.
FAQ
Is Fat Bastard a feminized strain?
Yes. Fat Bastard is a feminized photoperiod strain, so it produces female plants and flowers in response to the light cycle. You keep it under long days to grow its size, then flip the lights to a 12/12 cycle to start flowering. That control lets you dial in exactly how big the plant gets before it blooms, which suits any grow space.
How much THC does Fat Bastard have?
Fat Bastard is one of the most potent strains you can grow, testing from about 30% up to an exceptional 38% THC depending on the phenotype and how it is grown. Combined with its balanced 50/50 genetics, the result is a euphoric, powerful, relaxed effect. Its potency is at the very top end, so dose carefully, especially if you are newer to strong strains.
How long does Fat Bastard take to flower?
Once you flip it to a 12/12 light cycle, Fat Bastard flowers for about 8 to 10 weeks before it is ready to harvest. Outdoors, it finishes around October. Because it is a photoperiod plant, you control the vegetative stage, so you can grow it to the size you want before switching the lights to begin flowering.
Is Fat Bastard indica or sativa?
Fat Bastard is a balanced hybrid, at a 50/50 split, so it grows as a sturdy, manageable plant with dense, resinous buds, staying around 1.5 m and finishing in about 8 to 10 weeks of flowering. That balance shows in its euphoric, powerful, relaxed effect, which pairs an intense head with a comfortable, settled body.
What does Fat Bastard taste like?
It has a fruity flavor with a loud, pungent, skunky edge, the bold profile it gets from Goldmember and Monkey Spunk. Caryophyllene adds a peppery warmth, myrcene an earthy base and humulene a hoppy depth, while the fruity sweetness comes through from its genetics. A proper three to four week cure brings that fruity-skunky character forward on the inhale.
How much does Fat Bastard yield?
Fat Bastard is a heavy producer, giving around 400-600 g/m² indoors and a large 700-900 g per plant outdoors. To reach those numbers, give it strong light, a steady feed and good support for the dense colas. Training it during veg spreads the canopy and helps this productive plant push its harvest higher still.
