10 Strongest Autoflower Strains With Over 30% THC 🤯

Autoflowering cannabis strains are popular for their quick and easy growth cycle. But it's not just about speed; these strains now offer notable potency as well.

While some high-THC strains deliver impressive results, high-THC autoflower strains can take it to the next level.

This article explores 10 of the top autoflower strains with significant THC levels that are sure to impress.

1. Haze Auto - 24% THC

This sativa-dominant strain has potent 24% THC. It delivers an energetic, creative high while also providing some relaxation.

New users should be cautious as overdoing it can cause paranoia. The strong cerebral buzz may be too much for some.

Haze Auto is easy to grow, even for beginners. No light cycle management needed thanks to autoflowering. Finishes quickly in 8-9 weeks.

Indoors, it stays short between 2-3 feet tall. Outdoors it can reach 5 feet with enough sun.

Yields are solid at 1.5+ ounces per square foot indoors. Outdoors around 3 to 7 ounces per plant.

2. Grape Ape Auto - 24% THC

Grape Ape Auto has very high 24% THC. It starts with an uplifting head high then mellows into a chilled out body buzz.

This easy strain grows well indoors or outdoors. The short, bushy plants reach around 1.5 feet tall.

Flowering is fast at just 7-8 weeks. Indoors it yields around 1.5 ounces per square foot. Outdoors around 5 ounces per plant.

3. G13 Auto - 24% THC

This mostly indica has potent 24% THC, providing a mellow, relaxing high that relieves stress and pain. Higher doses can help insomnia.

New users should be cautious with the high THC levels to avoid paranoia or dizziness.

G13 Auto grows well indoors or outdoors. Indoor yields reach 450-550g/m2. Outdoors around 100g per plant.

It stays short at 90-120cm for discreet outdoor growing. The fast 8-9 week flowering allows multiple outdoor harvests.

4. Critical Purple Auto - 25% THC

This indica-heavy strain has potent 25% THC. It provides complete relaxation and is ideal for nighttime unwinding.

Medically, it relieves pain, anxiety, nausea and stimulates appetite, benefiting chemo patients or those with eating issues.

The autoflowering genetics make growing super easy indoors or outdoors. Plants transition themselves to flower automatically.

Indoors, plants reach around 1 meter tall. Outdoors around 120cm. Yields are 400g/m2 indoors and 200g per plant outdoors.

5. Lemon Autoflower - 25% THC

This sativa-leaning strain has potent 25% THC. It lifts mood and relieves stress but new users should go slow.

The autoflowering genetics make it super easy to grow. Buds form in just 7-8 weeks from seed.

Indoors it stays short at 70cm, yielding 400g/m2. Outdoors it reaches 80-100cm tall, yielding up to 150g per plant.

The compact size suits discreet outdoor grows or tight indoor spaces. It combines zesty flavor and easy growing.

6. Gorilla Glue Autoflower - 26% THC

The 26% THC creates a potent euphoric, relaxing high. New users should be cautious.

This easy autoflower transitions itself from vegetative to flowering. Pistils appear by week 2.

It finishes in just 8-10 weeks with thick, frosty buds. Indoors it stays short at 60-100cm, stretching taller outdoors to 100-150cm.

Yields are 550g/m2 indoors and 60-120g per outdoor plant.

7. Bruce Banner Auto - 26% THC

Bruce Banner Auto has very high 26% THC. The energetic, euphoric high boosts creativity and motivation with mellow side effects.

This robust autoflower thrives indoors or outdoors. The tall sativa-dom plants finish quickly in 10-13 weeks from seed.

Using organic nutrients can further increase the hefty yields. Indoors it produces up to 600g/m2 and 150g per plant outdoors.

8. Hellfire OG Auto - 30% THC

This strain has nearly 30% THC. It starts with a fast euphoric head rush before deeply relaxing the body, relieving stress and tension.

It's effective at treating pain, inflammation, depression and more thanks to its potent effects. Avoid overdoing it to prevent anxiety.

As an autoflower, Hellfire OG grows well indoors or out with few demands. Warm weather and organic soil produce the best results.

The short, bushy plants suit tight indoor setups. Flowering takes 55-65 days, allowing multiple outdoor harvests where possible.

Yields are solid at 400g/m2 indoors and 150g per plant outdoors.

9. Blackberry Moonrocks Auto - 31% THC

This strain has very high THC at 31%. It starts with an euphoric head-high then relaxes the body.

The indica effects make it ideal for evening relaxation. However, the powerful high means caution for new users.

Blackberry Moonrocks grows well indoors or outdoors. Use quality soil and balance pH.

Indoor growing allows control over factors like light and temperature to increase yields. Training techniques like low-stress training can also boost yields.

Flowering takes 8-10 weeks. The quick flowering allows 2 outdoor harvests per season where possible.

10. Fat Bastard Auto - 37% THC

This autoflowering cannabis strain has very high THC levels up to 37%. It produces a fast and intense high that leaves users deeply relaxed.

Despite being an autoflower, Fat Bastard grows quickly, finishing in under 3.5 months. Indoors it stays short, around 130cm, stretching slightly taller to 150cm outdoors.

Yields are very high for an autoflower. Indoors it can produce over 600g per sq meter. Outdoors it yields around 300g per plant.