Top 5 High-THC Autos of 2024

Are you looking for strains that grow rapidly without compromising on potency? Then you need to meet the five strongest autoflowers of 2024 below. We’ll walk you through everything you need to know about each variety in this eclectic mix. You’ll learn about their genetic lineage and uncover important tips about the growing process for each cultivar, including advice on germination, nutrition, training, and harvesting! Finally, we discuss their THC content and terpene profiles. Select your favorites and get seeds into the soil for a more elevated 2024!

ARE AUTOFLOWERING CANNABIS STRAINS WORTH IT?

We get this question a lot, and the answer is yes; autoflowering strains are definitely worth it. They are super easy to grow and can produce some spectacular bud, especially if you plant them in big pots under strong lights.

Plus, the fact that autoflowers don’t need to be pruned or trained makes them ideal for beginner growers. Their short stature allows them to fit into small indoor grow rooms or stealthy outdoor grows, and their short flowering time means you can typically pump out multiple harvests throughout the year.

Green Gelato Automatic

Our skilled breeders created this hard-hitting hybrid by crossing the legendary Green Gelato with Cookies Auto. Not only did this pairing produce a cultivar with enormous levels of THC, but also superb yields for her size. When germinating Green Gelato Automatic seeds, aim to maintain a consistent temperature of around 26°C and keep humidity high. Whether you germinate seeds directly in the soil or transplant them into a soil medium shortly after using another method, inoculate them with mycorrhizal fungi to enhance root system development.

By the end of the second week, you’ll have a seedling that stands at around 16cm. A 200W lamp will suffice to keep your plant growing well. Maintain a distance of around 35cm between your lamp and the tip of the canopy. Feed your plant with a formula high in nitrogen to spur luscious growth. Towards the end of the vegetative phase, you’ll get a taste of her true morphology. She’ll stand at around 35cm tall and exhibit short internodes and broad, indica-like fan leaves.

Green Gelato Automatic will start producing preflowers at the end of week four. Switch to nutrients higher in potassium and phosphorus at this time. Prepare to harvest up to 450g/m² from indoor plants in as little as nine weeks after seeds sprout. With a THC content of 24%, Green Gelato Automatic ranks as one of the most potent autos on the planet. You’ll experience a deeply relaxing yet clear-headed effect alongside delicious flavors and aromas of candy, earthiness, and fruit.

Green Gelato Auto

Green Gelato Auto

	Green Gelato x Cookies Auto
	13 to 16 oz/m²
	2 to 4 feet
	7 - 8 weeks
	THC: 24%

	Sativa 55% Indica 40% Ruderalis 5%
	3 to 6 oz/plant
	3 to 4 feet
	9 - 10 weeks after sprouting
	Clear, Physically Relaxing

Buy Green Gelato Auto

Cookies Gelato Automatic

Cookies Gelato Automatic derives from a cross between parent strains Cookies Gelato and Big Skunk Auto. Her buds are packed with sweetness and ooze resin loaded with THC. This cultivar maintains a compact size and delivers bountiful yields. Indoors, you can germinate seeds at any time of the year. If you plan on raising this strain in your garden, aim to get seeds in the soil during April. For the best start possible, put together a rich and well-draining potting mix using high-quality compost and worm castings. Throw mycorrhizal fungi and rhizobacteria into the mix to stave off root pathogens and aid root system health.

Cookies Gelato Automatic cruises through the vegetative phase in just four weeks. If you want taller plants, leave them untrained and they’ll reach a height of 140cm. If you’d prefer more compact plants, apply LST around week three to keep them at around 80–90cm. Apply feeds high in nitrogen, such as liquid seaweed and fish emulsion, to optimise leafy growth. By the end of week four, you’ll start to notice preflowers emerge at the nodes. It's advised to apply flowering blends that contain humic acid, fulvic acid, and high levels of phosphorus at this time to assist bud development.

Cookies Gelato Automatic will be fully mature around week 12. A three-week flush before this point may help to increase the flavor of your flowers. Prepare to harvest up to 500g/m² from indoor plants and 140g/plant from those grown outdoors. Once you’ve cured your buds, you’ll enjoy a balanced and creative high fueled by a THC content of 23%. Her sweet terpenes offer flavors of cookies, honey, and fruit with every hit.

Cookies Gelato Auto

Cookies Gelato Auto

	Cookies Gelato x Big Skunk Auto
	16 to 19 oz/m²
	3 to 4 feet
	8 - 9 weeks
	THC: 23%

	Sativa 20%, Indica 75%, Ruderalis 5%
	3 to 5 oz/plant
	3 to 5 feet
	10 - 12 weeks after sprouting
	Balanced, Creative

Buy Cookies Gelato Auto

Apple Fritter Automatic

As the offspring of Sour Apple Auto and Animal Cookies, Apple Fritter Automatic possesses an indica-dominant genetic profile. This cultivar zooms through the growing cycle in the blink of an eye, and insanely potent buds await on the other side. Apple Fritter Automatic seeds have a sky-high germination rate, making them suitable for any method. You’ll experience great results from the paper towel method, placing them within soil blocks, or directly into their final pots. This lady likes things warm, so try to maintain a temperature of around 26°C for speedier germination.

Over the next couple of weeks, you’ll watch this swift strain transform from a small seedling with a couple of cotyledons into a mature vegging plant. Apply LST during week two or three to create a flatter canopy; this will minimise the chance of mold later in the flowering cycle while increasing overall productivity. As your plant switches into bloom, consider treating her to a dose of bat guano or fermented fruit juice made in accordance with Korean natural farming principles. Continue to tie down her growing tips and defoliate where necessary to improve light penetration into the canopy. You’ll notice her pistils start to change from white to orange around week eight—a sign of increasing maturity.

Harvest your plant at the end of week 11. Simply cut her at the base and hang her in a well-ventilated and dark space until her petioles become cracker-dry. Trim your buds and place them into curing jars. You’ll need enough containers to process yields of up to 450g/m². At the end of this process, you’ll have a stash of flowers with a THC content of 23%. Take a toke, and you’ll feel her euphoric and creative high start to set in while flavors of apple and candy dance over your taste buds.

Apple Fritter Auto

Apple Fritter Auto

	Sour Apple Auto x Animal Cookies
	14 to 16 oz/m²
	2 to 3 feet
	8 - 10 weeks
	THC: 23%

	Sativa 35% Indica 60% Ruderalis 5%
	5 to 6 oz/plant
	2 to 4 feet
	11 - 12 weeks after sprouting
	Creative, Euphoric, Physically Relaxing

Buy Apple Fritter Auto

Fat Banana Automatic

As one of the highest THC autoflower strains of 2024, Fat Banana Automatic descends from Fat Banana and Cookies Auto. With an indica-dominant genetic profile, she maintains a compact size that makes her suitable for small spaces, and attractive to cultivators looking to keep a low profile. Much like the other autos mentioned in this list, Fat Banana Automatic seeds boast superb germination rates. Because this strain grows so fast, you’ll minimise potential disturbances and stress by sowing these seeds directly into their final pots. Put together a rich growing medium high in organic matter for improved nutrient retention.

She’ll reach a height of around 10cm by the end of week two. Position a 200W light around 35cm from the tip of her canopy, and you’ll have yourself a sturdy and compact plant with no signs of stretching. If you’re planning on training her, apply LST or other methods at the start of week three for superior yields and more uniform buds. By the time week five swings around, Fat Banana Automatic will have developed a considerably dense canopy. Take some time to defoliate to boost airflow and improve light exposure to the lower buds. Sugar beet extract, aloe vera, flowering formulas, and a touch of calcium and magnesium will see her through the blooming period successfully.

Prepare to harvest this high-THC autoflower at the end of week nine. If you grow her indoors, you’ll reap up to 450g/m², whereas outdoor plants offer a return of 90–175g/plant. Her THC content of 22% synergises with her fruity and earthy terpenes, resulting in a mellow and clear-headed high ideal for any time of the day.

Fat Banana Auto

Fat Banana Auto

	Fat Banana x Cookies Auto
	13 to 16 oz/m²
	2 to 3 feet
	7 - 8 weeks
	THC: 22%

	Sativa 20% Indica 70% Ruderalis 10%
	3 to 6 oz/plant
	3 to 4 feet
	9 - 10 weeks after sprouting
	Calming, Clear

Buy Fat Banana Auto

Pink Runtz Automatic

Let us introduce you to our final high-THC autoflowering strain of 2024: Pink Runtz Automatic. This hard-hitter descends from Pink Runtz and Gelato Auto, a pairing that passed down boatloads of THC and delicious terps. Train her well, and you can keep this plant as small as 60cm without drastically impacting her superb productivity. Sow these seeds around a week before your last frost date if you want to grow Pink Runtz Automatic outdoors from the get-go. Seeds perform well sown directly into their final pots, which removes any risk of transplant stress later on.

Start out the vegetative phase strong with a high-nitrogen fertiliser. If you’re growing organically, liquid seaweed, fish emulsion, and fermented plant juice are great options. Applications of lactic acid bacteria and compost tea will help to establish a healthy plant microbiome early on and stave off pesky pathogens. Aim to apply training around the end of week two to keep your plants at 70–100cm. If you'd rather leave them to form a large central cola, let them run free and top out at 120cm. Plan to defoliate around the end of week four. Remove lower leaves as well as those higher up that are obstructing light from hitting the developing preflowers below. Apply a final application of compost tea before your plants enter the flowering phase proper.

Generously apply fertilisers high in potassium and phosphorus before flushing your plant for around three weeks before harvest. Apply nothing but water adjusted to a pH of 6.0 during this time to improve the flavor of your yield. Harvest your plant at the end of week nine. You’ll bring in up to 450g/m² from indoor plants and 90–175g/plant from their outdoor counterparts. Consider wet trimming the buds to reduce the risk of mold during drying. After curing your flowers, brace yourself for a THC content of 22% and a motivating high ideal for boosting focus during bouts of work. Flavors of candy, earthiness, and fruit make these buds a fine option for vaping or cooking up edibles.

Pink Runtz Auto

Pink Runtz Auto

	Pink Runtz x Gelato Auto
	14 to 16 oz/m²
	2 to 3 feet
	7 - 9 weeks
	THC: 22%

	Sativa 45%, Indica 50%, Ruderalis 5%
	3 to 6 oz/plant
	3 to 5 feet
	10 – 11 weeks after sprouting
	Balanced, Long Lasting , Motivating , Uplifting

Buy Pink Runtz Auto

Enjoy the Strongest Autoflowers During 2024

Autoflowering strains have come a long way in recent years. Their speedy growing times, massive levels of THC, and great yields make them formidable competition for contemporary photoperiod genetics. If you’re looking to grow faster this year, without compromising on potency, then you need to get your hands on the genetics listed above!