The Most Productive Autoflowering Seeds
If you’re looking to buy the most productive autoflowering seeds, this guide has you covered. We’ve selected the best high-yielding strains both for indoor grows and outdoor grows, based on genetics, performance, and proven harvest results.
But first, keep in mind: every year, new autoflowering cannabis seeds enter the market. Just like everything in life, they evolve. That’s why this ranking is updated each season to bring you the freshest and most accurate information. Still, not always the newest strains are the most productive. That’s why you’ll also find here some legendary XXL autoflowers that have been delivering big harvests for years.
In this guide, you’ll discover:
Top 10 most productive autoflowering seeds for indoor grows.
Top 10 most productive autoflowering seeds for outdoor grows.
A comparison table with yields, flowering time, and performance.
FAQ answering the most common questions about autoflower yields.
What Are Autoflowering Seeds & How to Choose the Most Productive?
Autoflowering cannabis plants start flowering automatically after a few weeks of growth, regardless of light cycles. This means faster harvests and the possibility of multiple crops per year.
When choosing the best high-yielding autoflowering seeds, you should always check the breeder’s technical data: flowering time, indoor yield, outdoor yield, and plant size. But don’t worry — we’ve done the homework for you and selected the top-performing strains in 2025.
The Role of XXL Genetics
XXL autoflowering seeds are specially bred to reach larger sizes and more branching. This translates directly into bigger flowers and higher production, both indoors and outdoors.
Key Factors That Influence Autoflower Yields
To get the maximum yield from autoflowers, you should pay attention to:
- Genetics: not all strains are equally productive.
- Pot size: larger pots allow for stronger root systems and more growth.
- Light: indoors, high-quality LED or HPS lighting is essential.
- Nutrients: autos need balanced feeding, especially in bloom.
- Climate: outdoors, long sunny summers increase final yield.
Top 10 Most Productive Autoflowering Seeds for Indoor Growing
If you’re looking for the most productive autoflowering seeds for indoor cultivation, here’s our Top 10 list of 2025. All of these strains deliver yields above 600 g/m² under optimal conditions.
Orange Apricot Glue XL Auto (Sweet Seeds)
An autoflowering variety that produces dense buds with citrus and sweet notes; ready in 9–10 weeks and with very high yields for indoor cultivation.
- Indoor yield: Up to 650 g/m2
- THC: 18–25%
- Indoor/outdoor harvest: 8 weeks from germination
Gorilla Cookies Auto (Fast Buds)
A very potent and productive autoflowering variety with a sweet, earthy flavour; yields up to 650 g/m² indoors.
- Indoor yield: Up to 650 g/m2
- THC: 28%
- Indoor/Outdoor harvest: 9 weeks from germination
LSD Auto (Barney's Farm)
Compact, powerful automatic plant with an earthy, spicy aromatic profile; fast flowering time of 8–9 weeks.
- Indoor yield: Up to 650 g/m2
- Indoor/Outdoor harvest: 9 weeks from germination
Crystal Candy XL Auto (Sweet Seeds)
Variety with aromas of caramel and ripe fruit; XXL production in well-lit growing spaces.
- Indoor yield: Up to 650 g/m2
- THC: 19%
- Indoor/Outdoor harvest: 9 weeks from germination
Auto Gorilla (00 Seeds)
Robust genetics, very resinous and high yielding, perfect for growers looking for potency and production.
- Indoor yield: Up to 600 g/m2
- THC: 25%
- Indoor/Outdoor harvest: 9–10 weeks from germination
Auto Northern Lights XXL (00 Seeds)
A classic high-yield strain, discreet in aroma and resilient, ideal for indoor beginners.
- Indoor yield: Up to 600 g/m2
- THC: 25%
- Indoor/Outdoor harvest: 9–10 weeks from germination
Auto Critical Orange Punch (Dutch Passion)
A variety with a fruity flavour and citrus notes, offering impressive yields in a short period of time.
- Indoor yield: Up to 600 g/m2
- THC: 18%
- Indoor/Outdoor harvest: 10 weeks from germination
Auto Alien Gas XXL (Silent Seeds)
High potency and intense fuel aroma; a good choice for experienced growers.
- Indoor yield: Up to 650 g/m2
- THC: 28%
- Indoor/Outdoor harvest: 8–9 weeks from germination
Auto MAC Dawg XXL (Silent Seeds)
High-yielding autoflowering variety with complex aromas and outstanding resin production.
- Indoor yield: Up to 650 g/m2
- THC: 29%
- Indoor/Outdoor harvest: 8–9 weeks from germination
Top 10 Most Productive Autoflowering Seeds for Outdoor Growing
For growers who prefer the sun, here’s the Top 10 list of the most productive outdoor autoflowering seeds in 2025. Most of these strains can yield 300–400 g per plant outdoors.
Critical Neville Haze Auto (Delicious Seeds)
Large outdoor sativa variety with an intense aroma and abundant harvests.
- Outdoor yield: Up to 400 g per plant
- THC: 21%
- Indoor/Outdoor harvest: 11 weeks from germination
Critical + 2.0 Auto (Silent Seeds)
Highly productive autoflowering strain that is resistant to adverse climates; perfect for growers looking for stability.
- Outdoor yield: Up to 300 g per plant
- THC: 22%
- Indoor/Outdoor harvest: 9 weeks from germination
Cream Mandarine XL Auto (Sweet Seeds)
An autoflowering variety that has been in this ranking for several years, with an unmistakable citrus aroma and XXL outdoor production.
- Outdoor yield: Up to 300 g per plant
- THC: 20%
- Indoor/Outdoor harvest: 9 weeks from germination
Big Devil XL Auto (Sweet Seeds)
One of the largest autoflowering plants; ideal for mass production in summer.
- Outdoor yield: Up to 350 g per plant
- THC: 23%
- Indoor/Outdoor harvest: 9 weeks from germination
Gorilla Cookies Auto (Fast Buds)
Balanced potency, flavour and yield; performs very well in sunny outdoor conditions.
- Outdoor yield: Up to 350 g per plant
- THC: 28%
- Indoor/Outdoor harvest: 9 weeks from germination
Runtz Auto (Barney's Farm)
An automatic variety with a sweet, fruity flavour and very compact, resinous buds.
- Outdoor yield: Up to 300 g per plant
- THC: 27%
- Indoor/Outdoor harvest: 9–10 weeks from germination
Cherry Cola Auto (Fast Buds)
Sweet notes of cherry and cola; very appealing due to its unique aromatic profile.
- Outdoor yield: Up to 250 g per plant
- THC: 28%
- Indoor/Outdoor harvest: 9 weeks from germination
MAC Dawg XXL Auto (Silent Seeds)
Abundant production with powerful genetics; ideal for areas with long summers.
- Outdoor yield: Up to 400 g per plant
- THC: 29%
- Indoor/Outdoor harvest: 9 weeks from germination
LSD Auto (Barney's Farm)
A robust and fast-growing plant with a powerful effect, resistant to pests and climate changes.
- Outdoor yield: Up to 400 g per plant
- THC: 22%
- Indoor/Outdoor harvest: 9–10 weeks from germination
Alien Gas XXL Auto (Silent Seeds)
Penetrating aroma and high yield; highly prized by experienced growers.
- Outdoor yield: Up to 400 g per plant
- THC: 28%
- Indoor/Outdoor harvest: 9 weeks from germination
Comparative Table – Most Productive Autoflowering Seeds in 2025
| Strain | Breeder | Best For | Flowering | Indoor Yield | Outdoor Yield |
|---|---|---|---|---|---|
| Orange Apricot Glue XL Auto | Sweet Seeds | Indoor | 9–10 weeks | up to 650 g/m² | up to 180 g/plant |
| Gorilla Cookies Auto | Fast Buds | Indoor / Outdoor | 9–10 weeks | up to 650 g/m² | up to 350 g/plant |
| Runtz Auto | Barney’s Farm | Indoor / Outdoor | 9–10 weeks | up to 600 g/m² | up to 300 g/plant |
| LSD Auto | Barney’s Farm | Indoor / Outdoor | 8–9 weeks | up to 650 g/m² | up to 350 g/plant |
| Crystal Candy XL Auto | Sweet Seeds | Indoor / Outdoor | 8–9 weeks | up to 650 g/m² | up to 350 g/plant |
| Auto Gorilla | 00 Seeds | Indoor | 8–9 weeks | up to 600 g/m² | up to 120 g/plant |
| Auto Northern Lights XXL | 00 Seeds | Indoor | 8–9 weeks | up to 650 g/m² | up to 200 g/plant |
| Auto Critical Orange Punch | Dutch Passion | Indoor | 9–10 weeks | up to 700 g/m² | up to 200 g/plant |
| Auto Alien Gas XXL | Silent Seeds | Indoor / Outdoor | 9–10 weeks | up to 650 g/m² | up to 400 g/plant |
| Auto MAC Dawg XXL | Silent Seeds | Indoor / Outdoor | 9–10 weeks | up to 650 g/m² | up to 400 g/plant |
