colorado weed growing laws

Colorado Marijuana Laws

Updated August 2019

Colorado is one of the most liberal states in the U.S. in regards to its attitude toward cannabis. Colorado voters approved Amendment 64 to legalize the sale, cultivation, and possession of recreational marijuana in 2012. Having already passed comprehensive medical marijuana legislation, the legal marijuana market in Colorado reached over $1 billion dollars in 2016. Learn more about Colorado marijuana laws below.

Recreational Marijuana in Colorado

Colorado legalized recreational marijuana for adults aged 21 and older in November 2012. Under the law, adults can legally sell, possess, or transport up to 1 ounce of marijuana. The consumption of marijuana must be done in private or in certain licensed businesses where social consumption is permitted. In 2019, Colorado Gov. Jared Polis signed a series of marijuana bills into law taht allow marijuana home delivery and social cannabis lounges.

According to Colorado marijuana laws, being caught with marijuana quantities of more than 1 ounce to 2 ounces is considered a petty offense and susceptible to a maximum fine of $100. Possessing 2 to 6 ounces of marijuana is a misdemeanor and punishable to a maximum fine of $700 and incarceration of up to 12 months. Possessing 6 to 12 ounces of marijuana is also a misdemeanor, punishable to a maximum fine of $5,000 and incarceration of 6 to 18 months. Possessing more than 12 ounces of marijuana is a felony, punishable to incarceration of 1 to 2 years and a maximum fine of $100,000.

Medical Marijuana in Colorado

Medical marijuana has been legal in Colorado since 2001. With the written approval from a physician, patients can legally use, possess, and cultivate marijuana under the law.

Patients can possess up to 2 ounces of usable marijuana and up to 6 cannabis plants. They should always keep their doctor’s documentation on hand to avoid arrest.

Colorado’s medical marijuana law expands legal access to minors, provided they have parental consent. As of June 2016, schools in Colorado are required to allow students access to medical cannabis while on school grounds after Gov. John Hickenlooper signed “Jack’s Law.”

Approved conditions in Colorado are as follows:

  • Autism Spectrum Disorders
  • Cachexia or Wasting Syndrome
  • Cancer
  • Chronic Pain
  • Epilepsy and other Seizure Disorders
  • Glaucoma
  • HIV or AIDS
  • Multiple Sclerosis
  • Nausea
  • Opiate Replacement (“Any Condition for Which a Physician Could Prescribe an Opiate”)
  • Post-Traumatic Stress Disorder (PTSD)

Other conditions are subject to approval by the Colorado Board of Health.

Consumption of CBD from Hemp Oil in Colorado

Hemp-derived CBD products are legal under Federal Law in the United States; however, individual state laws are dynamic and fluid. Individual states may enact their own laws governing hemp-derived CBD.

Cultivation of Cannabis in Colorado

Colorado marijuana law allows individuals to grow up to six marijuana plants on their properties for both medical and non-medical purposes. However, just three of the plants can be mature at any one time. Trimmings from these plants can be shared with adults over 21 without financial remuneration.

The state has also legalized the cultivation of hemp by farmers licensed by the Colorado Department of Agriculture.

Legal Status of Other U.S. States

Stay up to date on the latest state legislation, referendums, and public opinion polls. Our Marijuana Legalization Map allows you to browse the current status of medical and recreational marijuana laws in other U.S. states and territories.



DISCLAIMER: The information contained in this website is for general information purposes only; it does not constitute legal advice. Although we endeavor to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Therefore, any reliance you place on such information is strictly at your own risk.

With more states legalizing the use of marijuana it can be hard to stay up to date on Colorado marijuana laws. Click to learn more about marijuana laws in CO!

Tips for Growing Cannabis in Colorado

Sunday December 8, 2019

A s any Colorado gardener can attest to, the state’s unpredictable climate requires special accommodations to make it through the volatile growing season. This is especially true of Colorado cannabis home growers who must pay attention not only to the weather but all of their surroundings, as well. Today we’ll discuss best practices for growing cannabis in Colorado’s crazy climate. But first, let’s take a look at what makes the Centennial State’s environment so unique.

Understanding Colorado’s Unique Climate

Colorado is the highest state in the nation – literally. Colorado’s average elevation is 6800 feet above sea level, though even at its lowest point, no part of Colorado is below 2000 feet above sea level. As such, outdoor crops and home grows in Colorado are susceptible to very high UV light penetration. Though this may be a good thing in terms of THC levels, it also contributes to our unpredictable weather patterns. Additionally, its inland geography and thus inaccessibility to large bodies of water means that Colorado, in general, is a much dryer state than the rest.

According to an article published by Colorado State University, the average annual precipitation throughout the state ranges between seven and 60 inches depending on location. Hence, successful growing operations must accommodate their crops based on their geographical location. To be clear, cannabis crops need about 35 inches of water on average; dry climates require additional irrigation options, whereas wet environments may fair better indoors where growers can control their water intake and help prevent mildew growth.

Finally, different regions witness extremely different weather patterns. For example, The plains are prone to sudden, relatively dry (though potentially damaging) thunderstorms and hailstorms that can cause a drastic drop in temperature. This sudden stressor may cause cannabis plants to “herm” or produce seeds as an evolutionary mechanism to protect the plant’s genetic line. However, the mountains and western side of the state are much less affected by these storms.

Advice for Cultivating Marijuana in Colorado

Colorado may have unpredictable weather patterns, but that doesn’t mean the weed there isn’t high quality. There are a few best practices growers should consider if they are to cultivate a successful cannabis crop in Colorado.

Start Seedlings Indoors in March

Seedlings require delicate care. They need a warm home and precise moisture levels. By starting seedlings indoors, you help ensure that your plants will get off to the best start possible without risking a surprise frost or other harsh weather conditions. Furthermore, by starting them in March, they will be large enough to withstand harsh winds, soft frost, and pest infestation by the time the outdoor growing season officially begins after Mother’s day in May.

Use Pots When Possible

Pots and planters are great for those with limited space. Grow pots allow growers to move them as necessary to protect them from weather or increase their sun exposure. Growing cannabis in planters also helps control plant size and makes it easier to grow them covertly.

However, the roots of plants grown in pots are not nearly as insulated as those grown in the ground. If a quick temperature drop is expected, prepare by insulating pots with dirt, old blankets, etc. If high winds are also in the forecast, bring the plants indoors for the time being. Check out this article for more information on protecting your plants from the elements.

Consider a Greenhouse Grow

Greenhouses are both secure and reliable. Not only do they protect plants from pests and other elements, but they also protect them from intruders and help them remain compliant with local Colorado cannabis cultivation laws. Additionally, greenhouses help extend the growing season to increase yield. Though greenhouses extend the growing season, year-round greenhouse cannabis cultivation requires special lighting and black-out screens to simulate different photoperiods.

Be Aware of Cannabis Cultivation Laws

Home cannabis cultivation laws vary by state and region but in general, there are a few things every Coloradian must follow. First, adults can only grow up to six plants with half flowering at a time (seedlings don’t count). Those numbers double per household if more than one adult lives there (i.e. no more than 12 plants, six flowering, even if eight adults live in the same space).

Additionally, renters and those living in public housing are not automatically afforded the right to cultivate cannabis on the premises. It is up to the landlord or the state whether or not to allow personal cannabis cultivation in these places; consult your rental/housing agreement for more information.

Finally, cannabis plants cannot grow within a 100-foot radius of a school. Plants must also be locked and inaccessible to anyone under 18 years old. If there are children in the home, cannabis plants must remain in a locked room or greenhouse, though if only adults live in residence, a lock on the front door is sufficient.

Growing marijuana at home is truly rewarding, especially for Colorado home growers who managed to protect their plants through the state’s unpredictable growing season.

Do you have tips for growing cannabis in Colorado? Share them in the comments below!

Colorado's unpredictable climate can require special accommodations to make it through the growing season. This is especially true of cannabis home growers who must pay attention not only to the weather but their surroundings, as well. Let's discuss best practices for growing in this crazy climate.