May 19, 2020

13 Best Early Finishing Outdoor Strains to Grow!

For those who love growing their cannabis outdoors, understand the pain of waiting for what feels like an eternity on their cannabis plants to finish growing. This is going to cover Strains of Marijuana that have a faster harvest period when grown outdoors. We are going to have an in-depth analysis of these cannabis strains and examine the plants’ growing time (of course,) their strain type (Indica/Sativa,) THC Content, Yield, and of course effects and flavor.

Our Recommendations For Early Finishing Outdoor Strains:

Whether you are late to the growing season, eager to harvest your weed quickly, or honestly just impatient, sometimes you need your weed…like yesterday. An early finishing strain is very attractive to marijuana farmers and personal growers because they can sell or consume their cannabis in sometimes as soon as a month and a half. No matter the reason, there’s a solution. These early finishing strains grow in less time than their counterparts and you don’t miss out on having the wonderful cannabis.

Amnesia Fast

  • Variety: ​Sativa dominant
  • THC Content: Up to 25%
  • Yield: 550-600 g/m2 
  • Flowering Time: 50 – 55 days

This lovely strain gets its mysterious name from its power and will always top my list of the best early finishing outdoor strains. To put it briefly, Amnesia Fast will knock you into a very creative and uplifting state. Amnesia Fast is made from Soma’s Amnesia x Secret Hybrid. Those two parents create Amnesia Fast which is 70% Sativa and 30% Indica. Amnesia Fast will grow to 100-150 cm or even taller if taken care of properly. After 50-55 days this beauty will be ready to harvest; it is ready to be harvested at the end of September. Once all of the great cannabis is harvested, you can expect a floral and fruity taste and a creative and strong effect.

C99 x Blueberry

  • Variety: ​Hybrid
  • THC Content: High
  • Yield: 350-450 gr/m2
  • Flowering Time: 6 – 7 weeks (42-49 days)

C99 x Blueberry is such a joy to not only grow but also to consume. This nearly royal strain is made from Cinderella 99 x Blueberry x Fast. Those parents combined make C99 x Blueberry which is ready to be harvested in about 45 days, or a month and a half. This plant’s height is between 80 cm- 1.40 m tall. C99 x Blueberry’s height and size mean you must have enough space to grow this plant. It should not be planted close to other plants because this plant needs its room. Just like Amnesia Fast, this strain’s harvest month is September.

Blueberry Muffin

  • Variety: ​Indica
  • THC Content: Moderate
  • Yield: High
  • Flowering Time: 45 Days

Blueberry Muffin is not just your average strain. It is a 2017, 6th place, Emerald Cup winner. This award-winning strain comes from Purple Panty Dropper x Razzle Berry; creating an Indica dominant strain that is both energetic and uplifting. Blueberry Muffin is not just a strain with fast harvest time, it is a stunning plant to look at. With its flecks purple and coat of snowy white resin crystals, Blueberry Muffin is definitely one of the prettiest strains on this list. Once it gets to the end of September, this energetic and uplisting strain is ready to be harvested. As the name insinuates, Blueberry Muffin takes like blueberry, cake, spicy and herbal.

Magic Melon

  • Variety: ​Sativa
  • THC Content: 22%
  • Yield:​ Moderate 
  • Flowering Time: 50 days

Magic Melon is popular due to its high THC Content, short Flowering Time, and of course this magically melon taste! With a THC Content of 22% and a CBD Content of 1-2%, Magic Melon is a powerful strain. Magic Melon’s harvest month is September, of course, but specifically September 20- October 5. Once it is ready to harvest, after 50 days, you can expect a melon tasting strain that can be a strong sedative. It is quite interesting that Magic Melon’s effects are more commonly expected in an Indica-dominant strain rather than a Sativa-dominant strain.

Early Skunk

  • Variety: ​Hybrid
  • Yield: 400-500 g/m2
  • Flowering Time: 50days

From Mr. Nice Seedbank, Early Skunk’s genetics have been perfected. It is the product of Early Pearl x Skunk #1. Early Skunk has a blend of Afghani, Mexican, and Columbian genetics; those genetics have created a fast-growing hybrid. This cannabis plant produces good yields in only 50 days whether it is indoors, outdoors, or in a greenhouse. You can expect your plant to be ready to harvest by mid-September.

Gorilla Girl F1 Fast

  • Variety:​ Sativa
  • THC Content: 18 – 25%
  • Yield: 350-600 g/plant
  • Flowering Time: 49 days

Sweet Seeds’ Gorilla Girl F1 Fast, is a cross between Gorilla Girl x Sweet Gelato Auto. Gorilla Girl F1 Fast is composed mostly of Sativa but has a bit of Indica to balance it out. For such a short flowering time, the expected yield is quite high and the THC Content has the potential of being quite high too. Unlike Early Skunk, Gorilla Girl F1 Fast is ready to harvest at the beginning of September. What makes Gorilla Girl F1 Fast even better is that it is just as pleasant to your taste buds as it is to your high. The high is extremely comfortable and the taste is very sweet, fruity, woody, and earthy.

Cookies ‘n’ Cream Auto

  • Variety: ​Hybrid
  • THC Content: Up to 17%
  • Yield: 500g/plant
  • Flowering Time: 8 weeks from germination

Cookies ‘n’ Cream Auto has the genetics of two popular strains, Girl Scout Cookies Auto x Caramel Cream Auto. This strain usually flowers within 8 weeks or 9 weeks, so it gives you an extremely quick grow! With such a tasty name, no wonder this strain is growing in popularity. Cookies ‘n’ Cream Auto has the perfect content of THC and CBD to be used at any point in the day. No need to fear couch lock with this strain because it is uplifting and strong. Cookies ‘n’ Cream Auto has great medicinal benefits such as relief for those with Anxiety, Headaches, Insomnia, Lack of Appetite, Muscle Spasm, Pain, and Stress. While Cookies ‘n’ Cream Auto does have amazing medicinal benefits, it also is super fun for recreational use as well.

Northern Lights Auto

  • Variety: ​Indica
  • THC Content: 15%
  • Yield: 250g/plant
  • Flowering Time: 38-42 days

Auto Northern Lights is the product of Northern Lights x Ruderalis and is almost completely composed of Indica. This plant is made from one of the most well known and popular strains, Northern Lights. Having such notable genetics has introduced many people to this insanely fast-growing strain. Auto Northern Lights is ready to harvest in a little bit more than a month. From germination to actual harvest, Auto Northern Lights can be as quick as 38 days making it one of the fastest-growing marijuana strains there is. Once it is ready to harvest, this cannabis gives a body, head, powerful and relaxing high. It also has a sweet and pungent taste.

Super Kush

  • Variety: ​Indica
  • THC Content: 25%
  • Yield: 600g/plant
  • Flowering Time: 49 days

Phoenix Seeds’ Super Kush strain is powerful to say the least. With a THC Content of 25%, no wonder they sell out so fast. Super Kush is a 100% powerhouse. This is one of the strains that should be left for the pros to smoke. Super Kush’s almost non-existent CBD content is the reason this strain is very very very powerful. Although this strain is not recommended for new consumers, anyone who wants to grow it should have a go. With a yield of up to 600 g/plant, this is a very high yielding plant…, especially in only 49 days.

Galaxy CBD

  • Variety: ​Indica
  • THC Content: 11%
  • CBD Content: 9%
  • Yield: 500g-1500g/plant
  • Flowering Time: 55 days

Sometimes you’re looking for something a little more subtle, and Galaxy CBD is the way to go. Galaxy CBD is made from Afghani x Northern Lights x High-CBD Plant. Interestingly, this CBD plant has a decent amount of THC. The yield from this Indica-dominant plant is ridiculous! Galaxy CBD’s yield can be up to 1500 g/plant in only 55 days…it’s truly out of this world! The harvest month in mid-September and when it is ready to be harvested and consumed, expect a skunky and sweet taste and a state of physical relaxation without the narcotic feel its parents give.

Quick Mass

  • Variety: ​Hybrid
  • THC Content: Moderate
  • Yield: Moderate
  • Flowering Time: 42-49 days

Quick Mass is one of the strains to watch out for because of its amazing effects and also its legendary parents. Quick Mass is the result of a cross between Critical Mass x White Widow and it is a marvelous cross to say the least. Quick Mass gives you the best of both worlds with its mix of Indica and Sativa. It’s less than 49-day flowering time and Quick Mass’ fantastic relaxing effects make this ideal for beginners to consume. It required a bit of work when growing, so expect to have to trim and look after your plant well.

Think Fast

  • Variety: Sativa
  • THC Content: Moderate
  • Yield: HIGH!!!
  • Flowering Time: 8​ weeks, or 56 days

Think Fast definitely lives up to its name with a fast harvesting time. Think Fast is the result of a cross between Think Different x Power Plant. Both of those crossed made this Sativa-dominant strain that is extremely versatile. Think Fast can grow indoors, outdoors, and in a greenhouse, so this strain is obviously resilient. The flowering time is extremely fast and Think Fast has a high yield, so be ready for lots and lots of weed after about 56 days.

White Dwarf Auto

  • Variety: ​Indica
  • THC Content: Average
  • Yield: Moderate
  • Flowering Time: 60 days

White Dwarf Auto’s genetics are a cross between Ruderalis x Indica. This auto-flowering strain of cannabis has the perfect name to describe it. It is a very short and compact plant that is definitely easy to conceal. White Dwarf Auto’s a perfect fit for beginners and farmers alike because of its resilience and small size.

Final Thoughts on Early Finishing Marijuana Strains

In conclusion, those were the best early finishing strains of marijuana. Within the strains we discussed, there are a few points to cover. The fastest strains on this list were Blueberry Muffin, C99 x Blueberry, and Quick Mass. All of those strains are ready to harvest in less than 50 days. The strains with the highest THC Content were Super Kush, Gorilla Girl F1 Fast, Magic Melon, and Amnesia Fast. All of those have a content of at least 22% +. There are many different reasons you could be wanting an early finishing strain of marijuana, but hopefully you have found an outdoor strain that works well for you and your needs!

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Jacob is the owner and lead author here at  He's been involved in the cannabis growing industry since 2012.  Based outside of Denver, Colorado, his passion involves sharing his knowledge of growing and the cannabis industry.

Jacob Hydra

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