How to Grow Hemp (What You Need to Know About Growing CBD Hemp)

So, you want to grow hemp? It’s the perfect time to start learning everything you can. With the passing of the 2018 Farm Bill by the federal government, it’s now legal (once again) to grow hemp in the USA. While regulations on growing hemp haven’t yet been determined, it’s only a matter of time before growing hemp could become one of the most commonly cultivated crops.

The money in hemp isn’t bad either. While the legal status of CBD varies from state to state, by some estimates, the hemp market for CBD could be worth up to $30,000 an acre. Plant hemp with a 10, 20, 50, or 100-acre hemp farm, and you’re looking at a rather lucrative crop.

There seems to be no stopping for the hemp industry. For those that know how to harvest hemp and cultivate hemp, crops like hemp are helping farmers see potential growth from this industry.

While many farmers are growing a small crop of hemp right along with all of their other crops. So Let’s dive right in and find out how farmers can make hundreds of thousands on this incredible cash crop.

How to Grow Hemp: The Basics

Seeing as the topic of hemp growing could encompass an entire book, here we’re simply going to cover the basics of hemp cultivation. If you’re interested in hemp farming, but don’t know much about a hemp harvest or have the slightest idea of where to start, consider this written especially for you.

What is Hemp?

Like marijuana, hemp is a member of the Cannabis sativa L. plant species. While both cannabis plants are from the same species, these cannabis plants contain a unique biological structure which makes them very different plants indeed.

Hemp Plants

While marijuana plants produce thick, dense buds and grow to be relatively bushy, hemp plants are tall and thin, and they don’t produce the buds that marijuana is famous for. When you look at a hemp and marijuana plant side by side, there is no mistaking the difference between the two.

One of the biggest differences between hemp and marijuana, however, is the cannabinoid content each contains. While marijuana can contain 5-30% THC (or more), hemp plants contain less than 0.3% THC.

Since the controlled substances act came into effect, the possession, cultivation, processing, or distribution of industrial hemp has limited purposes. Most of them fall under agricultural or academic research carried out by a state department of agriculture, and a farmer will need special licenses to grow, cultivate and farm hemp.

What is Hemp Used For?

Hemp cultivation exists for a few different reasons. Years ago, growers have been looking at hemp for industrial purposes (such as for making hemp fibers). The hemp plant is also grown for the nutritional value found in the hemp seed that can be eaten by itself or used to make hempseed oil. Hemp is a hardy plant and is mainly used for rope, textiles, paper, animal feed, and much more.

Related Read: Five CBD

Most recently, hemp has been widely cultivated for CBD. When discussing hemp farming techniques, it’s vital to determine what you’re interested in growing it for. Fiber? Seed? CBD? Currently, farmers growing hemp for CBD is making the biggest buzz and industry experts expect that new markets for CBD will continue to grow.

Why? Because the CBD industry has exploded and is estimated to be worth some $22 billion by 2022. And now that it’s (almost) legal to grow in the US, there are plenty of people that want in on the action. Let’s take a deeper look at the different categories of industrial hemp. We’ll cover some topics every would-be hemp farmers should know.


For years, farmers have traditionally grown the hemp plant for its fiber. Fibrous types of hemp can be grown to produce paper, textiles, fuel, building materials, and much more.

Hemp Fibers

Hemp grown for fiber is typically done on a large-scale production (including harvesting, processing, and transporting).


Hemp seeds are one of the most nutritional food items that exist. Seed/grain food types of a particular hemp plant will typically contain a significantly lower cannabinoid content but are prized for their precious seeds as a nutritional food source.

Farmers take great care when they plant these hemp seeds because they are extremely delicate and must be harvested, processed, and transported with extreme care. Storage is also vital to ensure the highest possible quality.


Trusted CBD Oils


Cannabinoid-rich types of hemp are the most popular, as they contain significant amounts of cannabidiol (CBD) that can be used to make oil and various products. Growing CBD hemp strains requires a certain level of mastery when it comes to cultivation in order to achieve the highest CBD levels while keeping THC levels under 0.3%.


Hemp grown for CBD typically only employs female plants because male and female plants grown together will increase seed production while decreasing CBD levels. The very first thing you should ask yourself when learning about hemp farming is what type of hemp you want to grow.

You see, hemp grown for fiber, seeds, and CBD oil is grown much differently. CBD is extracted from female hemp. On CBD hemp farms, there are typically 1,000-1,600 plants grown per acre and all are tended to individually by the farmer.

Related article: Hemp Oil and CBD Oil Compared

It’s grown similarly to marijuana, with the big difference being the levels of THC contained in the plant itself. Both female and male plants are grown in a crop of hemp. There is a planting level of some 400,000 plants per acre. When compared to marijuana harvesting, hemp is reaped more like a crop of wheat.

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beginners guide to CBD

The tops are typically harvested for seed, while the stalk and other fibers are used for countless industrial reasons. So, exactly how does your hemp garden grow? It all depends on the reason you’re growing hemp. For all intents and purposes, we’ll focus on how to grow hemp for CBD.

How to Grow Hemp for CBD?

They don’t say cannabis grows like a weed for nothing. If you’re interested in learning how hemp grows and how to harvest hemp properly, rest assured it’s one of the easiest plants a farmer can grow. Seriously, it will grow almost anywhere. Many are even growing hemp indoors.

Hemp growing in nature

That being said, if you’re growing hemp to extract CBD, you want to ensure you’re growing the highest quality hemp possible. We mentioned earlier that when grown for CBD extraction, hemp is grown similarly to marijuana.

Each plant is tended to individually and given the love and care it needs to thrive. Quality cultivation practices can almost guarantee a quality harvest. So what are the ideal conditions for growing hemp?

holding CBD tincture

Before we look into that, it’s important to understand a bit about hemp seeds themselves. After all, your hemp plants become plants from either a seed or a clone, similar to every other plant you’re familiar with.

Finding the Best Hemp Seeds or Clones

Currently, finding the right seeds poses a bit of a challenge to would-be hemp farmers. There are plenty of seeds available throughout Europe and Canada available for growers, however, if these seeds are acclimated to a US farm is another question.

Hemp Seed

Hemp has been all but prohibited for almost a century. This means you’re not going to be walking into your local feed store any time soon to pick up a bag of CBD hemp seeds.

Aside from hemp seeds from Europe and Canada, there are hemp seed varieties available online, but determining if they are genetically stable enough to ensure a consistent crop isn’t guaranteed. According to Michael Bowman, founding chair of the National Hemp Association, it will “take another year” to ensure hemp farmers are getting a quality seed they can rely on.

Best Conditions for Growing Hemp

The best hemp growers always keep in mind the most favorable conditions for cultivating your crop. Sure, hemp crops will grow anywhere but there are conditions it prefers over others. It is best to wain until the last frost before you plant your first crop.

Check it out.


Soil Acidity and Minerals

First things first. Hemp does better in some types of soil than others. The first thing you’re going to want to do is to get your soil tested. You can buy a soil test online or take a soil sample to your local agricultural center for testing. Hemp prefers soil with a pH of 6-7.5.

Well-aerated, loamy soil is best and should contain rich organic matter, be extremely fertile, and be supplemented with the recommended minerals and nitrogen-rich fertilizer if necessary to ensure plants will have exactly what they need through the growing season.


When planting hemp, keep in mind one thing: these plants love the sun. That being said, hemp plants should be planted where they will receive the most sunlight possible.

Hemp Farm in the sun

While hemp will grow with as little as six hours of sunlight per day, if you want your plants to thrive, full sun is ideal (think 12+ hours/day). Seeds should be planted after the last danger of frost has passed, which is typically in early to mid-spring in most parts of North America.


Hemp needs at least 20-30 inches of rainfall during its growth cycle. If rainfall doesn’t meet these requirements, it will be necessary to employ proper irrigation. Ample amounts of moisture are needed during germination.

Hemp watering

It’s important to also keep in mind that water absorption will increase each day until the beginning of the flowering stage.

According to extensive tests that were performed from 1975-1977, “soil moisture should not go below 80% of total moisture capacity during hemp ontogenesis.”

Pest/Disease Control

Any crop is subject to pests and disease, and hemp is no exception. Keep in mind when learning how to grow hemp, that it is subject to a number of different garden pests and pathogens.

Disease is also something to keep in mind, particularly white and grey mold (which have historically been reported to infect and significantly impact industrial hemp production). Other things to look out for are viruses, bacterial and fungal infections, root rot, and blight. To date, there have not been any pesticides that are registered to use on hemp in the US.

Keep in mind that if you’re interested in growing organic hemp (which is extremely important for several reasons), the pesticides you use to control pests and/or disease should meet the USDA National List of Allowed and Prohibited Substances. To avoid disease build-up in hemp plants, a 4-year crop rotation is recommended.

Hemp Harvesting

Hemp grown for CBD extraction is typically harvested in early to mid-fall when cannabinoid levels are at their peak (think early to late October).

Hemp Harvesting Operation

Much like the harvest of marijuana, hemp flowers are when ripe and full, then dried and optimally cured.

How Long Does it Take to Grow Hemp?

Typically, a hemp crop will be harvested at right around 4 months (or 16 weeks). After harvesting and curing the hemp, knowing where to sell it (or send it for extraction to make your own products) is the next step. While regulations have not been yet established for the legal hemp industry, expect a better understanding of where to sell wholesale hemp as new laws are set in place.

How to Grow and Harvest Hemp Legally

We have truly stepped into one of the most exciting times in history. After almost a century of prohibition, hemp has made a comeback. And it’s stepped into the mainstream spotlight. Years ago, the 2018 Farm Bill essentially made hemp legal, regulations that govern the plant have yet to be established.

It’s up to individual states to address their own policy regarding hemp cultivation. If you are a hemp grower, you’ll want to check the laws established in your state. Click here for more information on State Industrial Hemp Statutes.

Hemp, Hemp Hooray…Growing Hemp is Here to Stay

We’re obviously overjoyed that hemp has made its way back into mainstream America. Considering it was once illegal not to grow hemp in the US, then criminalized for almost 100 years, we’d like to think hemp has made one heck of a comeback.

Industrial Hemp Harvester

If you’re interested in growing hemp or learning more about hemp farmers, there’s never been a better time to learn everything you can. Years ago it may have been tough to supply the demand, but you can find buyers easily in today’s market, especially for CBD products.

Growing hemp for CBD extraction is an industry that’s set to explode in the next couple of years. Want to get in on it? Best to get in now by learning all there is about growing hemp.

In the coming months, we’ll take an even deeper look into growing hemp to give you all the information we possibly can as we stay updated on rapidly changing policy, regulation, and cannabis cultivation laws in general.

Photo credit: GenCanna

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