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8 Tips for Growing Sour Diesel Marijuana

Sour Diesel is known for its unique, pungent diesel aroma; its cerebral high and energizing qualities are also legendary. If you need a powerful psychedelic high, you can’t do much better than this strain. Also known as Sour D, this strain is probably a cross of Chemdawg 91 and Super Skunk, created in California in the 1990s. However, despite its popularity, the precise origins of this strain are the subject of intense debate. Perhaps the mystery only adds to its reputation.

If you need a powerful psychedelic high, you can’t do much better than the legendary Sour Diesel.

Sour Diesel is very much a recreational user’s favorite because it is so fast-acting. It is a sativa-dominant (70%) hybrid with a whopping 22% THC. It doesn’t take long for the euphoria to set in when you use this strain, and you will love what is almost an entirely cerebral experience. You won’t succumb to couch-lock but will enjoy a high that lasts for up to five hours.

Although Sour D is from the West Coast, it is a big hit on the East Coast too. If you are looking to grow your favorite strain, and it just so happens to be Sour Diesel, read the steps and tips in this growing guide to benefit from a potent herb that will elevate your mind.

1 – “Train” Your Sour Diesel with Low-Stress Training (LST)

Sour Diesel is a relatively hard strain to grow and offers moderate yields. It tends to ‘stretch’ during the first month of flowering, which, at 10-11 weeks, is lengthy by marijuana standards. As a result, you may need to engage in LST if your growing tent is on the small side. When you complete LST correctly, you will expose the bud sites on the lower end of the plant to more light, boosting growth.

Sour Diesel is a relatively hard strain to grow and offers moderate yields…

In horticulture, espalier is the practice of pruning and training a tree or plant to grow in a flat, 2-D structure. LST is the modern version of this and involves training your marijuana plants without physically cutting them. One of the best aspects of LST is the minimal equipment required. You can get by with soft plant ties, wooden skewers, duct tape, and perhaps a drill.

Make sure you bend the shoots of the plant’s outwards, away from the main stem. You can drill holes in the lips of pots to support the bending of the shoots, which you can tie down with plant ties. Make sure you never secure them to the floor. If you accidentally break a branch, patch the wound with duct tape. The branch will recover if you haven’t sheared it off.

As your Sour Diesel plants grow, you will need to adjust the bends, and when the secondary shoots get more light, you may have to subject them to LST too. You need to perform Low-Stress Training before the plants are late in bloom. By that point, the stems are too rigid to bend. When growing indoors, it is best to use LST when your plants are still in the vegetative stage.

2 – You Get Better Yields Outdoors

There is no question that you can enjoy a decent return when growing Sour Diesel indoors. It takes up to 11 weeks to flower, but you typically benefit from 18 ounces per square meter planted. However, this strain fills your indoor space quickly, especially during the first few weeks of flowering. As a result, a small grow room is not sufficient; you’ll have to invest in a greenhouse garden.

Otherwise, it is best if you try to grow Sour D outdoors to give it room to stretch. As it is primarily sativa, this strain thrives in a warm environment with a temperature of between 65 and 85-degrees Fahrenheit, just like you would find in California or Spain. It has a late harvest time when grown outdoors. You can expect it to be ready only in late October or even early November!

As Sour Diesel is primarily sativa, the strain thrives in warm environments with a temperature between 65 and 85-degrees Fahrenheit.

It is not unusual for a single Sour D plant to provide a couple of pounds of premium quality weed when exposed to optimal growing conditions. Some growers report seeing Sour Diesel plants that are 10 feet tall! In the last couple of weeks of flowering, you will see the buds coated with gorgeous trichomes.

3 – Feeding Your Sour Diesel

As Sour D is part of the Chem Dawg family, it has high nutrient requirements. In particular, these plants need a high level of nitrogen during the vegetative stage. Throughout the growing process, you need nitrogen (N), phosphorus (P), and potassium (K). However, if you are using soil as your growing medium, please remember that nutrients are naturally present.

Therefore, you have to be wary when adding extra nutrients or risk harming your plants. Did you know that you can kill your plants by providing them with excessive levels of nutrients? If you are a new grower, we recommend using soil for your Sour Diesel strain because it offers a buffer between chemicals and the plants’ root systems. This means the ground is more forgiving of feeding mistakes.

DID YOU KNOW? You can kill your entire Sour Diesel crop by giving them too many nutrients!

As is the case with animals, the stages of a marijuana plant’s life require different nutrients. If you use high-quality soil, you don’t need to add extra nutrients during the seedling stage. At this point, all you must do is ensure the pots used for each plant are large enough to let the roots grow freely.

From Seed to Harvest

During the vegetative phase, you will need to focus on nitrogen, along with phosphorus, and potassium. Make sure the N is twice the level of the P and three times the level of K at this stage. This equates to a ratio of 6-3-2 or 18-9-6, which is visible on the front of the packaging. Vital secondary nutrients include sulfur, magnesium, and calcium.

In the flowering phase, the NPK ratio must change. The main focus is now P, which is up to three times higher than N or K. Once again, make sure any nutrient mix you add to your plants contains secondary nutrients such as iron, copper, and manganese. It is best to stop fertilizing a few days or even a fortnight before harvest to ensure your final product does not have a chemical taste.

4 – Humidity Considerations for Your Sour Diesel Crop

As we already mentioned, Sour Diesel grows well in a reasonably broad temperature range. Make sure the temperature doesn’t fall by more than 10-15 degrees at night. Although most growers don’t have a problem with maintaining the right temperature for their plants, humidity is an entirely different matter.

As you’re probably aware, all plants acquire carbon dioxide (CO2) from the atmosphere in which they are growing. The process involves plants opening their stomata and capturing the precious CO2. This also causes water to get drawn up through the plant from roots to leaves and, eventually, the atmosphere. The plant takes water from the growing medium, and this entire process means that maintaining a balanced humidity level is of paramount importance.

Don’t Forget Evaporation!

Did you know that your marijuana plants only use 10% of the water they absorb for growing? The rest is evaporated. The air holds a certain amount of moisture, too, and once it exceeds the max level, condensation begins.

If your Sour Diesel grows in low humidity, it will draw water from the soil at a rapid rate. If humidity levels fall to a certain point, your plants will no longer draw water as fast as they lose it during their stomatal openings. As a consequence, your plants close their stomata, which causes stress, slows growth, and damages yield.

DID YOU KNOW? Your Sour Diesel plants only use 10% of the water they absorb for growing!

If you expose your plants to excessively high humidity levels, they draw water from the soil more slowly. Decreased nutrient uptake efficiency is the result, which causes deficiencies and slow growth. When growing your Sour Diesel indoors, keep humidity levels at 65-70% during the vegetative stage and drop them by 10-15% when your weed is flowering. The night phase of flowering should be a further 5% lower.

If you expose your Sour D to humidity levels of 80% at any time, you increase the risk of bacterial, fungal and viral infections. If the humidity drops below 50% too early in the growth phase, the yield will suffer because the crop’s photosynthetic efficiency is compromised.

5 – Controlling Temperature

One of the best investments you can make is to purchase a digital thermometer/hygrometer because it will help you monitor the temperature and humidity in your grow room. Always ensure you take the temperature in the shade and add several fans to boost airflow.

If you find that the temperature in the grow room exceeds 80 degrees Fahrenheit, reduce it by using an extractor fan with a filter. Be wary of using HPS lamps because, in a small enough room, they can cause temperatures to soar to a fatal 120 degrees!

You shouldn’t need to increase the temperature when the lights are on because the lamps ensure your growing room has all the heat it needs. However, when the lights are off, the temperature can plummet to dangerously cold levels. If this happens, purchase a space heater with a thermostat. On the downside, this simple solution burns a lot of energy. You could also invest in a radiator with a thermostat.

6 – Protect Your Sour Diesel: Keep Pesky Pests at Bay

As you’ll mainly grow your Sour Diesel outdoors, it is often a nightmare to prevent pests from feasting on your crop. The ‘easy’ option is to use chemical insecticides because they usually are pretty effective. However, even though they get rid of the critters, they cause other problems: Primarily the damage they cause to humans when inhaled!

Rather than take the risk, here’s a quick list of natural remedies you can use, along with the pests they work best on:

NATURAL ADDITIVES TO HELP PROTECT YOUR SOUR DIESEL GROW FROM PESTS

Clove Oil A significant percentage of organisms hate the scent of cloves, and they are potentially lethal to the touch. As a result, we recommend creating a spray using clove oil. It works well against gray mold, spider mites, caterpillars, and ants.

Cinnamon Oil & Tea Cinnamon is another excellent repellent, and you can add it with other ingredients in a spray. Alternatively, sprinkle some cinnamon near the base or roots of the plant. It is most effective against whiteflies, aphids, and powdery mildew.

Garlic – As well as its use as a remedy in treating diseases, garlic is ideal for keeping pests at bay because of its antibacterial and antifungal properties. It is effective against almost all pests and helps to strengthen your plants.

Coriander Oil – Once again, you can purchase a special spray or create one that contains coriander oil. This is effective against thrips, Pythium, and spider mites.

SOUR DIESEL PRO GROWING TIP : Sprinkle some cinnamon near the base or roots of the plant to help protect against whiteflies, aphids, and powdery mildew

7 – Outdoor Security

As long as you take effective measures, your crops will thrive if you grow them indoors. However, as Sour Diesel works best outdoors, you have to invest more time and effort in security. We’re assuming that you cultivate marijuana in a state where it is legal, by the way!

A lot of growers don’t have the money to pay for a private plot of land and decide to risk growing their marijuana plants on public property. If you go down this route, you do so at your peril. Clandestine growing is difficult because you need to find a spot in a secluded area. Even if you locate such a place, it is probably far away from where you live, which means regular check-ups are almost impossible.

As a result, we can only recommend growing your Sour Diesel on private land you own. Even in states where it is legal to grow weed, it is best if you keep it hidden from sight. Sour D can reach 10 feet in height, so it’s hard to keep the plants’ existence a secret! If possible, erect a giant screen to hide the herb. Pruning also helps keep the plants invisible and may ultimately result in a better yield.

8 – Getting the Most out of Your Post-Harvest Sour Diesel Crop

Once you have harvested your marvelous Sour Diesel plants, there is still a lot of work to do. First and foremost, we recommend stripping the fan leaves away because they are not very potent and don’t cure as well as the rest of the plant. On the plus side, you can keep them for cannabutter.

To dry, hang the plants upside down from a wire in a room that’s at the optimal temperature and humidity levels. The optimal drying environment is 70 degrees Fahrenheit and 50% humidity. After a few days, your plants are ready for the curing process, which is designed to bring out the tones and flavors of marijuana. When you get it wrong, you can significantly reduce the potency.

The optimal drying environment for Sour Diesel marijuana is 70 degrees Fahrenheit and 50% humidity.

The final step is to store your buds. At this point, you have removed the juiciest buds and ensure they are dried and cured correctly. The biggest enemies of potent weed are light and heat. We recommend storing your Sour Diesel buds in large, wide-mouthed mason jars. Make sure you open the jars daily for a week or two to allow moisture to escape.

Store the jars in a cool, dark place at a temperature of around 70 degrees and a humidity level of up to 60%. Frankly, you can use your weed by the time you’re prepared to place it in the jars. However, the longer you keep your buds in the containers, the more potent they get. If you don’t believe us, try smoking buds directly from the plant, and compare them to buds smoked after a long drying and curing session. Believe us; the difference is very noticeable.

Thinking about growing Sour Diesel marijuana? Use this step-by-step guide to achieve maximum yields for one of the U.S.' most popular sativa strains.

Sour Diesel Feminized Cannabis strain

Sour Diesel has been deemed one of the 25 greatest strains of all time. Her unique aroma and undeniable sativa high are responsible for her esteemed status within the world of weed.

Sour Diesel is a strain familiar to cannabis lovers all around the world. It could easily be called one of the most beloved and well-known strains in existence, and it has the _High Times_ approval to back it! Listed as one of the magazine’s 25 Greatest Strains of All Time, the publication went so far as to claim that Sour Diesel would have a spot on this list for eternity.

THE ENIGMATIC GENETICS OF SOUR DIESEL

Despite its widespread recognition, the precise origins of Sour Diesel remain a topic of debate. It has roots on the East Coast of the United States, but there is little certainty regarding the parent strains used to create this legend. Some breeders argue that Sour Diesel is simply a distinct phenotype of the strain Diesel, whereas others claim it was born out of a cross between Chemdawg and Northern Lights. Others refute both of these statements, instead believing that Sour Diesel inherited genetics from Original Diesel and the progeny of Northern Light, Shiva, and Hawaiian.

The exact lineage of Sour Diesel may always remain a mystery, but its genetic makeup has remained more or less consistent. The cultivar is sativa-dominant, and RQS’ classic version of Sour Diesel contains 70% sativa genetics and 30% indica.

THE EFFECTS OF SOUR DIESEL: A SOCIAL AND STIMULATING HIGH

The sativa dominance of Sour Diesel gives rise to a stimulating and clear-headed high, powered by 19% THC. This high THC value, in combination with her sativa leanings, makes for a fast-acting and long-lasting experience, which can still be enjoyed without losing the ability to function. This is mood-boosting cannabis for sure, and many users report euphoria and temporary relief from low mood and stress.

These cerebral effects boost cognition and plunge the user into a social and talkative mood—traits that make Sour Diesel a great strain to smoke during social gatherings and parties. Her effects can help break the ice and melt away formerly awkward social barriers. She’s also a great smoke to partake in with your closest crew to philosophise and dive into some deep conversation.

The stimulating effects are capable of increasing productivity, and go hand-in-hand with a cup of coffee in the morning. An increase in alertness makes the high almost performance-enhancing when it comes to completing daily tasks and creative projects. Many users also speak of an aphrodisiac quality that sparks libido. This makes her a superb strain for couples that like to smoke together among the sheets.

Sour Diesel is notorious for inducing cases of cottonmouth. This occurs when THC binds to cannabinoid receptors in the salivary glands and signals a decrease in saliva. Although this sensation can be a bit annoying at times, it’s the perfect excuse to prepare a large pitcher of ice-cold fruit juice before a smoking session.

After an hour or two, depending on how much you choose to smoke, the sativa effects begin to subside, and the less powerful, but still very apparent, indica effects take hold. The medium level of CBD also makes itself known at this point, as the high gently tapers off into a soothing after-glow. If you’re in the middle of a busy work day, then it’s time to smoke or vape a little more. If you’re at home, maybe it’s time for a restorative power nap.

Sour Diesel
Sour Diesel
Original Diesel x (Northern light x Shiva x Hawaiian)
475 – 525 gr/m2
90 – 160 cm
10 – 11 weeks
THC: 19%
Sativa 70% Indica 30%
550 – 600 gr/plant
150 – 200 cm
Late October
Clear, Physically Relaxing

THE TASTE AND SMELL OF SOUR DIESEL: THERE IS NO COMPETITION

As mentioned, Sour Diesel earned her place among the 25 Greatest Strains of All Time. _High Times_ even raves that there is no better flavour than Sour D in the cannabis world—and they aren’t wrong! Pressing your nose against a bud will send a distinct scent of diesel rushing into the olfactory system. This same sensation also takes hold of the taste buds when these flowers are smoked, vaped, or infused into edibles. Although the smell and taste of diesel might seem unappealing to the uninitiated, additional terpenes combine to create something truly spectacular and undeniably unique.

Laboratory analysis has revealed a complex terpene profile within the flowers of Sour Diesel. One of the most prominent is myrcene, a molecule that endows the strain with earthy and musky scents and encourages a stoning and joyful effect. Another one is limonene, which adds a hint of citrus to the mix. Caryophyllene is another major terpene within the strain that generates scents of black pepper and rosemary. All of these herbaceous, earthy, and fruity notes combine to create something that’s not sweet, but not altogether savoury either.

GROWING SOUR DIESEL: LARGE AND REWARDING YIELDS

Sour Diesel is a pleasure to grow—especially for a sativa. She has a relatively short flowering time, produces compact, spherical buds, and offers substantial harvests. Indoors, plants can reach up to 160cm in height, although training techniques like ScrOG can keep her closer to one metre. On the other hand, if you have enough space to let her flourish, go right ahead! Indoor plants produce a satisfying yield of up to 525g/m² after a reasonable flowering period of 9–11 weeks.

Outdoor plants can easily soar to a greater height of 200cm. This requires more maintenance in terms of pruning, but the yield makes the additional work worthwhile. She’ll pump out up to 600g/plant, ready for the chop in late October. Sour Diesel prefers a mild climate, so keep this in mind if you’re aiming to push production to its limit.

DIESEL AUTOMATIC

Diesel Automatic condenses the best traits of Sour Diesel into a smaller, faster, and easier to grow specimen. Royal Queen Seeds’ breeders brought this stimulating strain to life by crossing the legendary Diesel with Cannabis ruderalis. The progeny emerged with a genetic profile of 40% sativa, 30% indica, and 30% ruderalis.

Diesel Automatic produces tall and dense flowers decorated with solid orange pistils and plenty of glittering trichomes. These glands work hard during the flowering phase to produce a THC content of 14%. Although this quantity won’t blast your mind to the moon, it delivers a moderate high that hits the sweet spot between sobriety and overwhelm. Enjoy this functional high during the day to give your creativity and cognitive function an edge.

Diesel Automatic remains small and easy to manage in all settings. Indoor plants produce 325–375g/m² and peak at a height of 70cm. Outdoor plants grow to a slightly taller height of 110cm and offer a rewarding 60–110g/plant. Expect to harvest your bounty a mere 8–9 weeks after germination.

Sour Diesel is one of the most-famous Cannabis strains, and it is an incredibly sought after seed that can reward growers with outstanding profits and finished buds of the highest quality.