Growing cannabis outdoors is extremely rewarding, if mostly for the large yields and low cost of operation. Many of Royal Queen Seeds’ varieties take very well to the outdoors, thriving under the natural sunlight. That said, when it comes to outdoor growing, the strain you choose can make all the difference between success or failure. For that reason, we've put together a list of our top 5 outdoor strains—cultivars that are ready to harvest by late September.

With the selections on this list, you can avoid unnecessary trouble with rain and frost in October and November. While other growers are busy inspecting their developing buds for mould, you’ll be drying and curing your harvest and filling up your jars. If you missed out on our top 5 strains for colder and warmer climates, feel free to give those a look as well!

BENEFITS OF CHOOSING THE RIGHT STRAIN WHEN GROWING OUTDOORS

When selecting a cannabis strain to grow outdoors, speed shouldn’t be the only concern. It’s also important for plants to be productive, to have a good aroma, and to induce a pleasant effect once smoked.

Here are the traits your outdoor strain needs to include:

Fast flowering so you can beat rainy weather in fall
• Good natural resistance to mould and pests
High yields
• Great potency, aroma, and flavour
Superb effect

TOP 5 EARLY-FINISHING CANNABIS STRAINS TO GROW OUTDOORS IN 2020

Now that we know what makes a good strain to grow outdoors, it’s time to look at some recommended cultivars. Here are 5 of the best early-finishing outdoor strains to grow in 2020:

1. HONEY CREAM FAST FLOWERING

Honey Cream Fast Flowering is one of our recently updated favourites. This variety is very popular in Spain due to its sweet, creamy aroma, but you can grow it virtually anywhere in Europe.

Its remarkably short flowering time of only 6–7 weeks makes it a good strain in regions where the weather can get ugly early in fall. However, grow it in July and August, and this will provide a sufficient window for Honey Cream to receive a lot of sunlight so she can bulk up. This way, you can harvest good amounts of sweet, potent buds in September.

Besides its short flowering period and amazing flavour, Honey Cream convinces with a solid indica background composed of BlueBlack (Blueberry x Black Domina), Maple Leaf Indica (100% Afghan indica), and White Rhino. These three strains give Honey Cream FF an indica-dominant genetic profile, but there’s also a decent amount of sativa potency from White Widow, the predecessor of White Rhino. When things go well, plants reach outdoor heights of 180–250cm and yield up to 675g/plant.

Honey Cream

Honey Cream

Honey Cream

Genetic background BlueBlack x Maple Leaf Indica x White Rhino
Yield indoor 500 - 550 gr/m2
Height indoor 60 - 100 cm
Flowering time 6 - 7 weeks
THC strength THC: 16% (aprox.) / CBD: Medium
Blend 35% Sativa, 65% Indica, 0% Ruderalis
Yield outdoor 625 - 675 g/per plant (dried)
Height outdoor 180 - 250 cm
Harvest time Early October
Effect Psychedelic high

Buy Honey Cream

2. SPEEDY CHILE FAST FLOWERING

Next up is Speedy Chile. This girl combines Early Skunk genetics with several Chile indica landraces, although a third generation autoflowering plant is partly responsible for its very short flowering time of just 6 weeks (42 days!).

But make no mistake, Speedy Chile is a photoperiod strain that flowers depending on the amount of available light hours per day. One could say that fast flowering strains are the next breeding evolution after autoflowering genetics: These strains produce high THC levels while maintaining an incredibly short total crop time.

For outdoor cultivators and novice growers, choosing Speedy Chile Fast Flowering is a wise decision. You can fill your bags with buds in early September, which leaves no room for uncertainty regarding climate or mould issues. And the buds you gather will be excellent in their own right, producing sumptuous flavours of fruit and pine alongside a THC content of 16%.

Speedy Chile

Speedy Chile

Speedy Chile

Genetic background Early Skunk x Skunk x Chile Indica
Yield indoor 475 - 525 gr/m2
Height indoor 60 - 100 cm
Flowering time 6 weeks
THC strength THC: 16% (aprox.) / CBD: Low
Blend 30% Sativa, 70% Indica, 0% Ruderalis
Yield outdoor 450 - 500 g/per plant (dried)
Height outdoor 100 - 170 cm
Harvest time Early September
Effect Relaxing and full of flavour

Buy Speedy Chile

3. CRITICAL KUSH

You’ve probably already come across Critical in your career as a hobby grower, a true heavy-yielding champion we recommend for indoor and outdoor growers seeking the best ratio between yield and flowering time.

Critical, which also made it into our Top 5 Strains For Colder Climates, is a vigorous and rapid-flowering indica that deserves to be featured in every cannabis ranking that exists. However, crossing Critical with the notorious OG Kush took potency to a whole new level.

Critical Kush features some of the cerebral and rather sativa-like effects of OG Kush in addition to the powerful couch-lock stone of Critical—a classic scenario of “buy one high, get one free”. Growers looking for a sturdy, potent, and profit-yielding strain for the outdoors won’t make a bad decision with Critical Kush. The rewards you’ll receive in late September are huge: outdoor yields of up to 550g/plant, a long-lasting and intense effect, and a final product with an average THC level of 20%.

Critical Kush

Critical Kush

Critical Kush

Genetic background Critical x OG Kush
Yield indoor 500 - 550 gr/m2
Height indoor 60 - 100 cm
Flowering time 7 - 8 weeks
THC strength THC: 20% (aprox.) / CBD: Low
Blend 20% Sativa, 80% Indica, 0% Ruderalis
Yield outdoor 500 - 550 g/per plant (dried)
Height outdoor 100 - 140 cm
Harvest time Late September
Effect Extremely stoned long-lasting & body relaxing
 

Buy Critical Kush

 

4. SWEET ZZ

Sweet ZZ is our own version of the legendary Zkittlez. With its fruity aroma and succulent flavour, it’s top favourite for all candy-loving cannabis growers.

Bred from Grape Ape and Grapefruit, this indica-dominant hybrid takes only 7–9 weeks to flower, so you can cut this plant down in late September outdoors. When you do, better bring an extra bag, as this girl can yield up to 600g/plant in good conditions.

Although Sweet ZZ is indica-dominant, its effects are firmly focused on the mind, not the body. It will hit you with waves of uplifting thoughts and feel-good vibes. Add its delicious flavours of citrus, berries, and candy, and you get the physical embodiment of happiness in one awesome smoke. Good thing it’s not ultra-powerful with 15–20% THC. This way, you can savour its taste and effect for a long time before reaching the point of no return.

Sweet ZZ

Sweet ZZ

Sweet ZZ

Genetic background Grape Ape x Grapefruit
Yield indoor 550 - 600 gr/m2
Height indoor 80 - 140 cm
Flowering time 7 - 9 weeks
THC strength THC: 22% (aprox.) / CBD: Low
Blend 20% Sativa, 80% Indica
Yield outdoor 500 - 550 g/per plant (dried)
Height outdoor 160 - 200 cm
Harvest time Late September
Effect Stoned, relaxed
 

Buy Sweet ZZ

 

5. FAT BANANA

With Fat Banana, the breeders at RQS managed to hybridise the biggest and fattest Banana OG specimens. This Kush strain will seduce you with fruity flavours, and it may lay you flat on your couch with its incredibly potent smoke.

Perfect for growing outdoors, the strain needs about 7–8 weeks to mature its flowers. If all goes well, you can bring in 500g/plant by mid-September.

Fat Banana is one of those creeper strains where you’ll want to take it slow. The high starts out with a mild euphoric wave accompanied by mouth-watering fruity flavours, which makes it very difficult to put the doobie down again. It is easy to forget that the strain is immensely potent, with up to 25% THC or more. Before you know it, a powerful physical stone will take hold, and you’ll find yourself glued to the couch in utter relaxation.

Fat Banana

Fat Banana

Fat Banana

Genetic background Banana x OG Kush
Yield indoor 350 - 400 gr/m2
Height indoor 80 - 140 cm
Flowering time 7 - 8 weeks
THC strength THC: 25% (aprox.) / CBD: Low
Blend 30% Sativa, 70% Indica
Yield outdoor 450 - 500 g/per plant (dried)
Height outdoor 170 - 200 cm
Harvest time Late September
Effect Relaxing and full of flavour
 

Buy Fat Banana

 

DO YOU WANT TO GROW GREAT CANNABIS IN 2020?

If you’re eager to get started with growing some fantastic weed in 2020, check out more of the great seeds in our webshop. Here at Royal Queen Seeds, we carry many types of cannabis seeds for growing indoors and outdoors, including feminized cannabis seeds, autoflowering seeds, and CBD-rich cannabis seeds!

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