🔥 2026 Strain Guide: Updated Rankings for High-Yield & High-THC Genetics

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TOP10 SEEDS
Yield · Verified Cultivar Analysis

Yield is the one number every grower argues about and almost nobody measures the same way. The ten strains below are ranked on the figures their breeders publish — grams per square metre indoors, grams per plant outdoors — and on how often growers actually reproduce those numbers. Every one of them can break 500 g/m², and several will hand you a kilogram from a single outdoor plant.

  • 4 × Rocket Seeds
  • 3 × Mary Jane's Garden
  • 3 × Sonoma Seeds
  • Updated August 2026
Rank Strain Name Indoor Yield Outdoor Yield THC % Flowering Seeds
1 Super Critical 800 g/m² 800 – 1,200 g/plant 20% 7 – 8 Weeks View Seeds →
2 Lime Green Skunk 850 g/m² 900 g/plant 17% 8 – 9 Weeks View Seeds →
3 Big Bang 750 – 800 g/m² 950 – 1,000 g/plant 26% 9 Weeks View Seeds →
4 Chronic Widow 700 – 800 g/m² 850 – 900 g/plant 23% 8 – 10 Weeks View Seeds →
5 Cactus Jack 750 g/m² 1,000 g/plant 20 – 27% 8 – 9 Weeks View Seeds →
6 Triple XL (Auto) 800 – 1,000 g/m² ~100 g/plant 15 – 20% 8 – 10 Weeks View Seeds →
7 Cotton Candy 550 – 600 g/m² 1,000+ g/plant 23% 8 – 9 Weeks View Seeds →
8 Blue Dream ~595 g/m² ~709 g/plant 20% 9 – 10 Weeks View Seeds →
9 Big Bud Fast Version 500 – 550 g/m² 700 – 750 g/plant 17 – 20% 6 – 8 Weeks View Seeds →
10 B-52 500 – 550 g/m² 600 – 700 g/plant 18% 8 – 10 Weeks View Seeds →

How we rank: 45% indoor yield ceiling · 30% outdoor yield ceiling · 25% how reliably growers reproduce those numbers. Every figure is the breeder's published specification. Where a vendor quotes ounces, we have converted to grams (1 oz = 28.35 g) and shown the original in the card.

Detailed Strain Breakdowns & Yield Profiles

#1 Best All-Round

Super Critical

Sonoma Seeds
Genetics
Big Bud × Skunk #1 × White Widow
THC Potential
20%
Yield Potential
800 g/m² · 800 – 1,200 g/plant
Flowering Time
7 – 8 Weeks

Overview: Super Critical is the fastest route to a kilo-class harvest on this list. A three-way cross of Big Bud, Skunk #1 and White Widow, it carries the Big Bud frame — thick stems, short internodes, colas that fill out sideways instead of stretching — with Skunk vigour on top. Sonoma lists 800 g/m² indoors and 800–1,200 g per plant outside, and unlike most numbers on this page it comes attached to a 7–8 week finish, which is genuinely unusual for a plant this size.

Grower Tip

Super Critical's stems are strong but not infinite — a ScrOG net installed before flip is what separates an 800 g/m² room from a canopy that collapses under its own weight at week 6. Feed hard through stretch, then cut nitrogen early; the Big Bud lineage turns leafy and slow to finish if you keep pushing N into week 5.

Buy Super Critical at Sonoma Seeds →
#2 Highest Indoor

Lime Green Skunk

Mary Jane's Garden
Genetics
Northern Lights × Super Skunk
THC Potential
17%
Yield Potential
850 g/m² · 900 g/plant
Flowering Time
8 – 9 Weeks

Overview: The highest indoor figure on this page. Northern Lights × Super Skunk is an old-school pairing that still out-yields most modern hype cuts — MJG lists 850 g/m² and 900 g per plant on a compact 0–4 ft plant, which is the interesting part: that weight comes out of a small footprint rather than a tall plant. THC sits at a modest 17%, so treat this as a volume and extraction strain rather than a connoisseur one.

Grower Tip

Because it stays under 4 ft, run Lime Green Skunk as a SOG plant — 9 to 16 per light, one main cola each — instead of training two plants wide. Its density is also its weakness: strip the bottom third at flip and hold RH under 50% for the final fortnight, or the weight you gained turns into rot.

Buy Lime Green Skunk at Mary Jane's Garden →
#3 Best Potency + Yield

Big Bang

Rocket Seeds
Genetics
Skunk × Northern Lights × El Niño
THC Potential
26%
Yield Potential
750 – 800 g/m² · 950 – 1,000 g/plant
Flowering Time
9 Weeks

Overview: Big Bang is the rarity on this list — a strain that posts Big Bud-class yields without giving up potency. Skunk × Northern Lights × El Niño, 26% THC, and Rocket Seeds lists 750–800 g/m² indoors with up to a kilogram per plant outdoors at 160–180 cm. The flowers are thick, dense and heavily trichomed, which makes it as good a hash candidate as it is a weight producer.

Grower Tip

Big Bang is the poster child for ScrOG — its lateral branching accepts a screen better than almost anything else here, and the yield scales with how evenly you fill it. Keep daytime temps at 24–26°C and humidity under 55% from week 5; colas this thick trap moisture between the calyxes.

Buy Big Bang at Rocket Seeds →
#4 Pick

Chronic Widow

Rocket Seeds
Genetics
Chronic × White Widow
THC Potential
23%
Yield Potential
700 – 800 g/m² · 850 – 900 g/plant
Flowering Time
8 – 10 Weeks

Overview: Chronic × White Widow is a deliberate yield cross — Chronic for structure and volume, White Widow for resin and potency — and it lands at 23% THC with 700–800 g/m². Plants run 5–8 ft with wide internodes and long, heavy colas that fill in late. Rocket Seeds lists it as an 8–10 week finisher that wants warm, dry conditions, and it's one of the more forgiving big yielders for a second or third grow.

Grower Tip

Chronic Widow's colas get long before they get fat, so support the middle of the stem, not just the top — a single stake at the base won't stop them folding over. Outdoors, keep night temps above 10°C; a cold October stalls the final swell and costs you the top 15% of the harvest.

Buy Chronic Widow at Rocket Seeds →
#5 Pick

Cactus Jack

Rocket Seeds
Genetics
Cactus × Jack Herer
THC Potential
20 – 27%
Yield Potential
750 g/m² · 1,000 g/plant
Flowering Time
8 – 9 Weeks

Overview: Cactus × Jack Herer, and it behaves like a sativa that learned to bulk. Rocket Seeds lists 750 g/m² indoors, 1,000 g per plant outdoors and 20–27% THC across an 8–9 week flower — numbers that usually belong to an indica. It stretches, so plan for 5–8 ft indoors and train early rather than late. A strong outdoor pick for growers in warm, long-season climates.

Grower Tip

Cactus Jack does most of its stretching in the first 14 days of flower, so top in veg and flip early rather than vegging to fill the space. Its sativa frame wants more airflow than a squat indica — thin the interior at day 21 and you keep the yield without inviting mould.

Buy Cactus Jack at Rocket Seeds →
#6 Best Autoflower

Triple XL (Auto)

Sonoma Seeds
Genetics
Northern Lights #5 × Big Bud × Green Crack × Ruderalis
THC Potential
15 – 20%
Yield Potential
800 – 1,000 g/m² indoor · ~100 g/plant outdoor
Flowering Time
8 – 10 Weeks

Overview: The only autoflowering entry, and it's here for one reason: it's built specifically for yield. Northern Lights #5 × Big Bud × Green Crack × Ruderalis, 15–20% THC, with Sonoma quoting 800–1,000 g/m² indoors — a figure that should be read as a dense SOG number under near-perfect conditions, not a per-plant expectation. Outdoors its numbers are modest (~100 g/plant), so this is an indoor commercial auto rather than a garden showpiece.

Grower Tip

Run Triple XL at 16–20 plants per square metre and do not top it — autos are on a fixed clock and topping costs a week you can't buy back. Its yield claim depends entirely on plant count; the moment you start spacing them out, the 800–1,000 g/m² figure stops being reachable.

Buy Triple XL at Sonoma Seeds →
#7 Biggest Outdoors

Cotton Candy

Rocket Seeds
Genetics
Lavender × Power Plant
THC Potential
23%
Yield Potential
550 – 600 g/m² · 1,000+ g/plant
Flowering Time
8 – 9 Weeks

Overview: Lavender × Power Plant is an outdoor specialist: Rocket Seeds lists 550–600 g/m² indoors but 1,000+ g per plant outside — the widest indoor-to-outdoor gap on the list. Indoors it stays manageable; outdoors in hot, dry conditions it becomes a genuine monster. 23% THC, sweet berry and vanilla on the nose, and a mid-October finish.

Grower Tip

Cotton Candy wants heat and low humidity — it's the strain here most sensitive to a damp autumn. If your season ends wet, finish it under cover or accept a harvest 10 days early and lose the top of the yield. Indoors, give it 8+ ft of headroom, or flip it early and train sideways.

Buy Cotton Candy at Rocket Seeds →
#8 Most Reliable

Blue Dream

Mary Jane's Garden
Genetics
Blueberry × Super Silver Haze
THC Potential
20%
Yield Potential
21 oz/m² (~595 g) · 25 oz/plant (~709 g)
Flowering Time
9 – 10 Weeks

Overview: The most predictable big yielder on the list, in the sense that everyone already knows what it does. Blueberry × Super Silver Haze, 20% THC, with MJG listing 21 oz per square metre indoors and 25 oz per plant outdoors. It's a forgiving sativa-dominant that tolerates a beginner's environment, clones easily and revegetates without fuss — useful if you want to run the same cut over and over.

Grower Tip

Blue Dream's yield comes from breadth, so top it twice in veg and train it flat — an untrained plant gives you one tall cola and a bowl of popcorn. It also runs 9–10 weeks and will happily take 11; don't chop at nine because a calendar says so.

Buy Blue Dream at Mary Jane's Garden →
#9 Fastest

Big Bud Fast Version

Mary Jane's Garden
Genetics
Afghani × Northern Lights × Skunk #1
THC Potential
17 – 20%
Yield Potential
500 – 550 g/m² · 700 – 750 g/plant
Flowering Time
6 – 8 Weeks

Overview: The original bulk strain, sped up. Afghani × Northern Lights × Skunk #1 at 17–20% THC, flowering in 6–8 weeks and delivering 500–550 g/m² indoors with 700–750 g per plant outside. It isn't the biggest number on this page, but it is the fastest route to a large harvest — a photoperiod that finishes outdoors in September, before the weather turns.

Grower Tip

Big Bud's flowers get heavy enough to snap branches, so get the trellis in by week 3 of flower — with this cultivar it isn't optional. It's also mould- and pest-prone: hold humidity under 50% and open up the interior of the biggest colas weekly from week 6 to catch trouble before it spreads.

Buy Big Bud Fast Version at Mary Jane's Garden →
#10 Easiest

B-52

Sonoma Seeds
Genetics
Skunk #1 × Big Bud
THC Potential
18%
Yield Potential
500 – 550 g/m² · 600 – 700 g/plant
Flowering Time
8 – 10 Weeks

Overview: Skunk #1 × Big Bud, and essentially a beginner's yield strain: easy rating, 18% THC, 500–550 g/m² indoors and 600–700 g per plant outside, finishing in late October. It won't turn heads on a potency list, but it fills jars reliably with very little drama — which is exactly what a first or second grow actually needs.

Grower Tip

B-52 is a low-stress plant that rewards being left alone — top once, feed moderately, and don't chase the last few grams with heavy PK, which only buys you leaf. Its late-October finish means short-season growers should plan a greenhouse or accept a slightly earlier, lighter harvest.

Buy B-52 at Sonoma Seeds →

Grower Guide: How to Actually Hit These Yield Numbers

A breeder's yield figure is a ceiling measured in a dialled room, not a promise. Most home growers land 30–50% below it, and the gap is almost never genetics. These are the levers that actually move grams per square metre, roughly in order of impact.

1. Yield is a light equation before it's anything else

Dry flower weight tracks the total light energy your canopy receives. Practically, that means two numbers matter more than any nutrient: PPFD at canopy height and how evenly it covers the space. Target 600–900 PPFD in flower without CO₂, 800–1,000 with it, and a DLI of 35–45 mol/m²/day.

A useful sanity check is grams per watt. Modern LEDs with a trained canopy land around 1.0–1.5 g/W; anything below 0.7 g/W means light, environment or canopy shape is leaving weight on the table — not that the strain underperformed.

2. Canopy shape decides how much of that light you use

An untrained plant sends one cola into the sweet spot and popcorn everywhere else. You have two ways to fix that:

  • SOG (sea of green): many small plants, flipped early, one main cola each. Fastest to harvest, best for autos and compact strains like Lime Green Skunk and Triple XL.
  • ScrOG (screen of green): fewer plants, vegged into a horizontal net until 70–80% of the screen is filled, then flipped. Highest grams per plant, best for stretchy strains like Big Bang and Cactus Jack.

The mistake in both cases is filling the screen too early or flipping too late. Fill the footprint first, then flip — the first three weeks of flower are when the final canopy is actually built.

3. Plant count and veg time are a budget, not a preference

Rule of thumb for a 4×4 ft (1.2 m²) space
  • SOG: 9–16 plants, 1–2 weeks veg
  • Balanced: 4–6 plants, 3–4 weeks veg
  • ScrOG: 1–2 plants, 5–7 weeks veg

More veg time means more yield per plant but not necessarily more per square metre — and it costs electricity and calendar days. Perpetual harvests (staggered plantings every 3–4 weeks) usually beat one big run on total annual weight, even when each individual harvest is smaller.

4. Environment: keep VPD in range and the root zone stable

Transpiration drives nutrient delivery, and transpiration is set by vapor pressure deficit:

Flower-stage targets
  • Weeks 1–3: 0.9–1.1 kPa · 24–26°C · 60–65% RH
  • Weeks 4–6: 1.1–1.3 kPa · 24–26°C · 55–60% RH
  • Weeks 7–harvest: 1.3–1.5 kPa · 20–23°C · 40–48% RH

Two things silently cost yield: root-zone temperature above 26°C (which invites pythium in hydro) and night-time humidity spikes. A cheap hygrometer at canopy height, not at the wall, tells you more than any controller dashboard.

5. Feed for weight — then stop feeding for weight

Nitrogen drives vegetative bulk, which is why the biggest yielders are also the hungriest through stretch. But nitrogen in late flower buys leaf, not bud, and delays finishing:

  • Weeks 1–3: full veg-strength N — this is when the yield is won
  • Weeks 4–6: taper N, shift to PK, hold calcium and magnesium steady
  • Weeks 7+: PK only, minimal N, let the plant fade

Silica through veg and early flower pays for itself on big-colas strains — stronger cell walls mean fewer snapped branches under the weight you're deliberately building.

6. Defoliate and lollipop on a schedule, not on instinct

Strip the bottom third at flip — anything that will never see light is costing you water and nutrients for no return. Then take leaves selectively at day 21 and day 42: remove fan leaves shading a bud site, leave everything else. Over-defoliating in weeks 1–3 costs you the stretch, which costs you yield.

7. Support the weight before you need to

Every strain on this list can snap its own branches. Trellis is not a fix for a problem; it's part of the grow plan. Install the first net before flip, the second at week 3 of flower, and check the heaviest colas weekly from week 6 onward.

8. Harvest and dry correctly or the number evaporates

Fresh cannabis is roughly 75–80% water. A 1,000 g wet harvest becomes 200–250 g dry — that's normal, not a loss. What is a loss:

  • Harvesting early. The last two weeks are when most of the weight is added. Check trichomes on calyxes: 90% cloudy / 5–10% amber.
  • Drying too fast. 18–20°C at 58–62% RH for 10–14 days. A four-day dry costs you both weight and terpenes.
  • Over-drying. Below 55% RH the flower stops curing and starts crumbling — you've turned weight into dust.

9. The five things that most often kill a big-yield grow

  1. Light stress misinterpreted as hunger — bleached tops and taco'd leaves are distance problems, not feeding problems.
  2. Bud rot in dense colas during a humid week 7–9. Airflow and RH control, not fungicide.
  3. Nutrient burn during stretch, which stalls the exact growth phase that sets final yield.
  4. Powdery mildew from poor night-time air exchange.
  5. Harvesting by calendar instead of by trichome and by swell.

10. Treat published yields as ceilings and measure your own

Weigh every harvest and record grams per watt, grams per square metre and days from flip. Three runs of your own data will tell you more about a strain than any seed catalogue. That's also how you find out whether a 850 g/m² claim is a real number in your room or a marketing one.

Frequently Asked Questions

What counts as a high yield for cannabis?

Indoors, 300–500 g/m² is a solid home result and anything above 600 g/m² is excellent — the strains on this list are all marketed at 500 g/m² or higher, with several claiming 750–1,000. Outdoors, 500 g per plant is a good season and 1,000 g per plant is a big one. A useful cross-check is grams per watt of light: 1.0–1.5 g/W is the modern benchmark for LEDs with a trained canopy.

Is yield per square metre or per plant a better number?

Per square metre, if you're comparing strains indoors — it factors in how efficiently a plant uses the space rather than how long you vegged it. Per plant figures are far easier to inflate: veg a plant for twelve weeks under a big light and any cultivar will produce a kilogram. Outdoors, per-plant is the only sensible metric, because plant spacing is your choice.

Why are the breeder's yields so much higher than mine?

Because the published figure is a ceiling measured under near-ideal conditions: high PPFD, sealed CO₂ enrichment, precise VPD, a perfectly filled canopy and a grower who has run that strain many times. Most home growers land 30–50% below it. The gap is almost always light intensity, canopy shape or harvest timing — not genetics, and not nutrients.

Which high-yield strain is easiest for a beginner?

B-52 is rated easy, finishes in 8–10 weeks and gives 500–550 g/m² without much intervention. Big Bud Fast Version is the other beginner-friendly option: it's mould-prone but fast enough to finish before conditions deteriorate. Blue Dream is the most forgiving of a slightly sloppy environment.

What's the highest-yielding autoflower here?

Triple XL, at least on Sonoma's published figures of 800–1,000 g/m² indoors. Read that as a dense sea-of-green number under ideal conditions rather than a realistic per-plant expectation — autos produce their weight from plant count, so the yield collapses as soon as you give them room.

Which strain here is the biggest outdoor yielder?

Super Critical tops the list at 800–1,200 g per plant, with Cotton Candy and Cactus Jack both claiming 1,000 g+ and Big Bang close behind at 950–1,000 g. Outdoor yield is far more climate-dependent than indoor — a long, warm, dry autumn is worth more than any strain choice.

Do high-yield strains sacrifice potency?

Historically yes, and a few strains here prove the old rule — Lime Green Skunk yields 850 g/m² at 17% THC. But it's no longer a reliable trade-off: Big Bang lists 26% THC at 750–800 g/m², and Cactus Jack claims up to 27% at 750 g/m². What big yielders do sacrifice is density of resin per gram, which matters more for hash makers than for flower smokers.

How many plants should I run per square metre?

It depends on the method, not the strain. Sea of green uses 9–16 plants per square metre with 1–2 weeks of veg; a balanced run uses 4–6 with 3–4 weeks; a single-plant ScrOG needs 5–7 weeks of veg to fill the same footprint. Total yield per square metre ends up similar — what changes is your electricity bill, your veg time and how many clones you need.

Does a longer veg time mean more yield?

More yield per plant, yes — but not necessarily more per square metre or per kilowatt-hour. Beyond the point where you've filled the canopy, extra veg time just adds stem and light bill. For most home grows, flipping when the canopy is 70–80% full beats vegging another two weeks.

Does CO₂ actually increase yield?

Only if everything else is already dialled. CO₂ enrichment at 1,000–1,200 ppm can add 15–30% in a sealed room with high PPFD and temperatures around 28–30°C — but in a vented tent it escapes faster than you can add it, and in an under-lit room the plants can't use it. Fix light and canopy first; CO₂ is the last 15%, not the first.

Why did my 1,000 g wet harvest weigh 220 g dry?

Because fresh cannabis is roughly 75–80% water. Losing 70–80% of the wet weight during drying is normal and expected — 1,000 g wet typically becomes 200–250 g dry. If your final dry weight is far below that, you dried too fast, dried too hot, or harvested early.

Are these yield figures verified?

They are the breeders' published specifications, not independently audited trials — no seed bank's numbers are. We show the vendor's own range and convert ounces to grams where needed so you're comparing like with like. Treat the low end of each range as the realistic expectation in a well-run home garden.

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