high yielding outdoor strains

Top 5 Cannabis Strains To Grow Outdoors In 2020

Do you plan to grow outdoors this year? Take a look at our top 5 outdoor cannabis strains to grow in 2020. Get ready for fast growth and large yields!

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!



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


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:


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 (Fast Flowering)
Honey Cream (Fast Flowering)
BlueBlack x Maple Leaf Indica x White Rhino
500 – 550 gr/m2
100 – 160 cm
7 – 8 weeks
THC: 16%
Sativa 35% Indica 65%
625 – 675 gr/plant
180 – 250 cm
Early October


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 (Fast Flowering)
Speedy Chile (Fast Flowering)
Early Skunk x Skunk x Chile Indica
475 – 525 gr/m2
60 – 100 cm
7 – 8 weeks
THC: 16%
Sativa 30% Indica 70%
450 – 500 gr/plant
100 – 170 cm
Early September
Calming, Laughter


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 x OG Kush
500 – 550 gr/m2
60 – 100 cm
8 – 10 weeks
THC: 20%
Sativa 20% Indica 80%
500 – 550 gr/plant
100 – 140 cm
Late September
Long Lasting , Physically Relaxing, Powerful


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
Grape Ape x Grapefruit
550 – 600 gr/m2
80 – 140 cm
7 – 9 weeks
THC: 22%
Sativa 20% Indica 80%
500 – 550 gr/plant
160 – 200 cm
Late September
Calming, Stoned


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.

Click here for a selection of the best early-finishing outdoor cannabis strains that you can harvest by the end of September. Grow great weed in 2020!

Top 5 – Best outdoor strain for high yield

With a little planning and preparation, you’ll have every chance to enjoy amazing outdoor harvests of top quality.

When grown outdoors in a suitable climate it is not unusual for plants to produce 1 to 2 kg of buds. Many outdoor growers therefore only grow one or two high yielding cannabis strains a year to build up enough stock for their own use for a whole year. But how can you achieve such results?

First of all, you need a good growing location with lots of sunshine. You also need the best quality feminized outdoor seeds.

These are strains that, just like autoflower marijuana seeds, are resistant to diseases, mould and bud rot. Such strains thrive despite cool and humid conditions. They are tough and hardy.

Top 5 – Best outdoor weed varieties for high yields

All of our best performing outdoor feminized cannabis seeds that offer high yields have been carefully selected to ensure they thrive in outdoor conditions. Is grow season almost starting and hunting for an outdoor strain to grow? Let’s introduce you to our five best outdoor strains for for high yields right away:

1. Chocolope

Our feminized seeds of Chocolope are easy to grow both indoors and outdoors and are known for their excellent germination.

Chocolope consists of almost pure Sativa genetics and was created by crossing Cannalope Haze with the Chocolate Thai. This gives you all the qualities that will make you a happy grower. A great, perhaps the highest yield, a short flowering period, a great taste and an amazing effect.

During the vegetative phase the plant grows into a medium sized cannabis plant with a firm appearance. That’s a good thing as sShe produces large amounts of thick buds that need to be supported.

The strain features a high THC content which is quickly visible during flowering: the trichomes will cover the thick buds.

As the name suggests you can taste a delicious chocolate undertone. The effect is a relaxing uplifting high that will definitely get you through the day.

The strain contains a lot of THC, but the effect is still tolerable and characteristic of an almost pure Sativa cannabis strain. Physically you will experience few inhibitions and mentally you will feel great. An absolute must for your outdoor growing!

2. Sour Diesel

Recognized as one of the most renowned American Sativa strains of all time, Sour Diesel is a deservedly iconic strain. The distinctive sour fuel smell, combined with the citrus and lemon flavour, made this hybrid a classic.

Sour Diesel is a cross between Super Skunk x 91 Chemdawg and a Northern Lights hybrid that successfully combines the best of the strain. A real phenomenon that has won many awards around the world.

Sour Diesel is a remarkably resistant plant (just like plants grown with autoflowering weed seeds). Both against excess fertilizer and vermin which makes her a great choice for novice growers.

Are we looking at growing the plant? Then this plant has the following characteristics:

  • She can grow to a height of 3 meters
  • The flowering time is about 10 weeks which makes her a reasonably fast Sativa.
  • Grown by expert green fingers, Sour Diesel can yield 450-600 grams per /m².

This Californian herb has an extremely cerebral high, so take it easy if you’re a beginner. You can expect an intense, very mental high that grabs you and pushes you to unimaginable heights. As you travel through the peaks, expect to feel more alive. Your mind will be busy with a constant stream of ideas and thoughts.

Sour Diesel is also a firm favorite among medical users. Especially because the intense, long lasting Sativa high which can relieve all kinds of symptoms. Think of stress, anxiety, chronic pain, tension and migraines.

Are you looking for a pure, unique Sativa experience? Then try our Sour Diesel cannabis seeds!

3. Super Silver Haze

Together with Blue Dream, Super Silver Haze (the ancestor of the Amnesia Haze) is one of the few strains with a flowering time of more than ten weeks. However, she produces a wonderfully clean weed that is internationally acclaimed. Not only among commercial growers, but also especially among home growers.

Her fresh, unique taste, sky-high THC content and strong effect make almost all cannabis smokers drool to get their hands on her.

Super Silver Haze is suitable for an indoor grow, but will you go for maximum yields? Then grow her outdoors! In the open air under a bright sun and with lots of space she can produce up to 1500 grams of weed.

Outdoors she can grow over two meters tall and because of her long branches she is very suitable for a SCROG set-up. You can also make her height more controllable by applying LST. This will allow her to grow more in width and absorb more light.

Be careful with this powerhouse, because her THC strength is enormous and can easily stun an experienced smoker. The high starts with the mind and will make colors and sounds seem sharper.

More information | Super Silver Haze seeds

4. Pineapple Express

Pineapple Express is an Indica-Sativa hybrid that can reach great heights and features a very short flowering time. Hence the word “Express” in her name.

Our Pineapple Express is a fine plant, but not easy to grow (also not when grown indoors). Experience is therefore necessary!

Just like White Widow, she features a flowering time of about 60 days and is therefore quickly ready and ripe for harvest, which will not be disappointing by the way. Think of a maximum of 800 grams per m2.

Growing outdoors? That’s no problem with our Pineapple Express. Outdoors she reaches a maximum height of 170 cm.

During her growth you’ll have the feeling that you’re in a tropical party. This is accentuated in colder climates, where the plant fills the room with sweet exotic and tropical aromas.

The plant resembles a pineapple, not only because of its aroma, but also because of the abundance of cones and the firm dark green leaves it develops as she grows. After the first week of flowering she begins to form a resin blanket that eventually covers the whole plant.

Convinced? Pineapple Express is guaranteed to be worth growing!

5. Bubba Kush

Are you a fearless outdoor grower and looking for a big harvest of extremely high quality? Bubba Kush has a lot to offer!

Bubba Kush is an indica-dominant strain and perhaps one of the best Indicas currently available. A true legend! So it’s no coincidence that Bubba Kush is one of the ten most sought after strains in the US.

Growing cannabis with Bubba Kush is quite easy. She’s a compact and robust plant, flowers fast and produces tight buds with a nice thick layer of resin. The plant also looks beautiful and gets a nice purple tint when the temperature drops to 10 degrees outside. The aroma is intense, with a recognizable spicy citrus flavour.

The yield is generous and even very generous when grown outdoors. Think of 800 to 1500 grams per square meter.

Hunting down the best outdoor strain for high yields? Check our top 5 and buy your seeds at Weedseedsexpress! Get 20% FREE SEEDS + FREE SHIPPING