How to Grow LSD Autoflower
LSD Auto is a potent, resinous, indica-leaning autoflowering strain that crosses the classic LSD with a Super Magnum auto line, so it flowers on age. It is a 65/35 indica with a high 23-25% THC, an earthy, skunk, sweet flavor, and a creative, energetic, uplifted effect. Fast, heavy-yielding and easy, it brings LSD’s old-school funk to a quick auto grow.
As an autoflowering strain, LSD Auto flowers automatically with age rather than waiting on a change in the light cycle, so there is no need to switch it to shorter days. You simply give it long days from start to finish and it starts flowering on its own after a few weeks, running its whole life cycle in about 8 to 9 weeks from seed to harvest. That speed and simplicity are exactly what make autos so easy to grow.
Recommended Strains
LSD Auto
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THC | 23% - 25% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 65% Indica / 35% Sativa |
White LSD Auto
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THC | 20% - 24% (High) |
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Type | Autoflowering |
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Yield | Medium |
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Phenotype | 50% Indica / 50% Sativa |
Pungent, potent and quick, LSD Auto is a rewarding auto to grow whether you are new to it or experienced. You can see the full genetics and buy LSD Auto seeds on the strain page, and browse the rest of our autoflowering seeds alongside it.
Strain Profile at a Glance
| THC | High (23-25%) |
|---|---|
| Lineage | LSD x Super Magnum Auto |
| Type | Autoflowering |
| Genetics | 65% Indica / 35% Sativa |
| Climate | Warm, tropical or Mediterranean |
| Life cycle | 8-9 weeks seed to harvest |
| Harvest (outdoor) | All season |
| Height | 4.92 ft / 1.5 m |
| Yield indoor | 1.31-2.13 oz/ft² (400-650 g/m²) |
| Yield outdoor | 14.11-17.64 oz/plant (400-500 g/plant) |
| Grow difficulty | Easy, beginner-friendly |
| Flavors | Earthy, Skunk, Sweet |
| Effects | Creative, Energetic, Uplifted |
Promos & Deals
Growing an Autoflowering Strain
LSD Auto flowers on its own schedule, starting to bloom a few weeks after it sprouts no matter how long the days are. That means you keep it under long light the whole way through, typically 18 hours on and 6 off, or even 20/4, from seedling right to harvest; there is no switch to a shorter day to trigger flowering. The trade-off is that you cannot delay flowering to grow the plant bigger first, so every week of healthy early growth counts.
Because autos grow fast and do not like having their roots disturbed, start LSD Auto in its final pot rather than transplanting it. Sow the seed straight into the container it will finish in, go easy on the feed while it is young, and let it establish without a check. With a short life cycle of around 8 to 9 weeks from seed to harvest, a smooth start is the single biggest thing you can do for a strong, even finish.
Climate and Where to Grow It
LSD Auto is happiest in a warm, sunny climate, whether tropical or Mediterranean, and, like most autos, it is flexible about when you plant it. Because it flowers on age rather than on the season, you can run it at almost any time where the weather is warm enough, which is why its harvest window is listed as all season; outdoors you can even fit in more than one cycle in a long, warm year. At a moderate 1.5 m it slips easily into a tent or a sunny spot.
Yields are excellent for an auto in both settings: up to around 650 g/m² indoors in an optimized setup and a big 400-500 g per plant outdoors, which is a strong return for such a fast plant. As a sturdy, forgiving indica it is easy to grow, so the main job is a smooth start and good light. Its 23-25% THC makes it a real standout among our high-THC seeds, especially for an autoflower.
Keep humidity sensible through flowering to protect those dense, resinous buds: around 55-60% early on, nearer 40% as the flowers fill out, and lower toward harvest. Tight, resin-heavy colas can trap moisture inside, so steady airflow through the canopy keeps the finish clean. Aim for temperatures around 70-82°F (21-28°C), as this warm-climate strain enjoys the heat.
Feeding Schedule (EC Guide)
LSD Auto is a hungry, resinous auto that can take a solid feed to fuel its big harvest, but autos still want a lighter hand than photoperiod plants, so build slowly. Start very light, raise it gently as the plant grows, push a little more phosphorus and potassium through flower, then flush at the end so the earthy, skunky, sweet notes come through clean. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4-0.6 | Very light feed while roots establish in the final pot |
| Early growth | 0.8-1.2 | Raise nitrogen gently as the plant builds size |
| Early flower | 1.2-1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4-1.6 | Peak bloom feed while the heavy buds swell |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
LSD Auto starts flowering a few weeks from sprouting and runs its whole cycle in about 8 to 9 weeks from seed to harvest, with no change in the light cycle needed. It fills out with dense, resin-coated, trichome-caked buds on a sturdy frame, developing a deep, earthy, skunky aroma with a sweet undertone. Because it flowers on age, its harvest comes on a fixed, quick timeline.
Yields are excellent for an auto: up to around 650 g/m² indoors and 400-500 g per plant outdoors on its short cycle. Keep the heavy colas supported and the canopy open so the lower buds get light, feed it well through flower, and harvest when most of the trichomes have turned cloudy with a few amber for the fullest earthy-sweet 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 dense, resinous buds, because they can stay damp in the middle while the outside dries, and a gentle dry protects the deep, earthy-skunk aroma.
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 earthy, skunk and sweet notes and smooths the smoke, turning a freshly dried auto harvest into the rich, pungent, classic result LSD is known for.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. LSD Auto is a very resinous, frosty plant, so its trim is excellent for dry sift, bubble hash or rosin. That heavy resin and deep, earthy-skunk aroma make the trim genuinely valuable, turning offcuts into a potent, flavorful concentrate run rather than waste, which is a real bonus with such a high-THC auto.
Flavor and Terpenes
LSD Auto leads with a deep, earthy, skunky flavor with a sweet undertone, the pungent, old-school profile that made LSD a classic. It is a smooth but pungent smoke, and a good cure really brings that earthy-skunk-and-sweet character forward in the jar and on the inhale.
Its terpene profile shapes that flavor. Myrcene drives a deep, earthy, sweet, mellow base, while terpinolene adds a fresh, herbal lift and a touch of alpha-pinene brings a clean, piney edge. This simple but punchy profile is exactly what gives LSD Auto its grounded, earthy-skunk character with a sweet finish.
Effects and Best Use
With its high 23-25% THC and indica-leaning 65/35 make-up, LSD Auto delivers a potent, well-rounded experience. It is reported as creative, energetic and uplifted, a bright, heady lift that pairs mental energy with a relaxed, grounded body, which makes it a versatile strain for daytime use or creative work. Its potency runs high, so a little goes a long way, especially for newer smokers.
That creative, energetic, uplifted profile makes it a rewarding all-rounder, good for staying inspired and productive while enjoying its deep, earthy-skunk flavor. The combination of a fast, heavy-yielding auto grow, very high potency and a classic, pungent taste is exactly why this LSD autoflower stands out.
Common Problems and Pro Tips
LSD Auto is forgiving, but autos reward a careful start. Sow it straight into its final pot to avoid a transplant check, go light on the nutrients while it is young, and do any training early and gently, because once an auto starts flowering it will not recover lost time. Stick to low-stress training only, and only while the plant is still growing.
At a moderate 1.5 m it is easy to manage, so the main jobs are a smooth start, good light and keeping the air moving around its dense, resinous colas, which is especially important given how productive this strain can be. Hold humidity sensible through flower and defoliate a few of the largest fan leaves so light reaches the lower buds for an even, heavy finish.
As a pro tip, make the most of its big yield and heavy resin: feed it well through flower to bulk the colas, keep the air moving, and protect the terpenes with a proper plain-water flush and a full three to four week cure so the earthy-skunk flavor stays rich and clean. Save the frosty trim for concentrates, and harvest when most trichomes are cloudy with a few amber for a classic, pungent, potent result.
FAQ
Is LSD Auto an autoflowering strain?
Yes. LSD Auto flowers automatically with age rather than on a change in the light cycle, so you keep it under long days, usually 18/6 or 20/4, from seedling to harvest. It starts flowering on its own a few weeks after sprouting and runs its whole life cycle in about 8 to 9 weeks from seed to harvest, which makes it fast and simple to grow.
Should I transplant LSD Auto?
No. Autos grow fast and do not like having their roots disturbed, so start LSD Auto straight in its final pot rather than transplanting it. Sow the seed into the container it will finish in, go easy on the feed while it is young, and let it establish without a check. A smooth, uninterrupted start is the single biggest thing you can do for a strong finish.
How much THC does LSD Auto have?
LSD Auto is a high-THC auto, testing from around 23% up to 25% depending on the phenotype and how it is grown, which is strong for an autoflower. Combined with its indica-leaning 65/35 genetics, the result is a creative, energetic, uplifted effect with a grounded body. Because the potency is so high, it is worth dosing carefully if you are newer to strong strains.
How much does LSD Auto yield?
It is an excellent yielder for an auto, producing up to around 650 g/m² indoors in an optimized setup and a big 400-500 g per plant outdoors on its short cycle. Give it a big enough final pot, plenty of light, an open canopy and support for the heavy colas to get the most from this productive plant.
What does LSD Auto taste like?
It has a deep, earthy, skunky flavor with a sweet undertone, the pungent, old-school profile of its LSD parent. Myrcene drives the earthy, sweet base, terpinolene adds a fresh, herbal lift, and a touch of pinene a clean, piney edge. A proper three to four week cure really brings that earthy-skunk-and-sweet character forward on the inhale.
How long does LSD Auto take?
LSD Auto runs its whole life cycle in about 8 to 9 weeks from seed to harvest, because it flowers on age rather than on the season. That short, fixed timeline means you can plant it almost any time where it is warm enough, and outdoors you can fit more than one cycle into a long, warm year. There is no light-cycle change to manage.
