Does Marijuana Expire? Understanding Shelf Life and Storage

Does marijuana expire?

Introduction

Marijuana enthusiasts and medical cannabis users alike often wonder: does marijuana expire? The short answer is yes, and the shelf life of cannabis products can vary significantly depending on the type of product and how it's stored. Consuming marijuana at its optimal freshness is crucial to unlocking the full therapeutic potential of cannabinoids. 

Here, we delve into the expiration dates of different cannabis products and offer insights into proper storage practices.

Read Also: Cannabis Extraction: How Marijuana Is Produced

Marijuana Expiration Dates

Understanding the expiration dates of cannabis products is essential for ensuring their efficacy. The guidelines for different products are as follows:

  • Edibles: The shelf life of cannabis edibles depends on ingredients. Those with perishable items like eggs and milk may last 2-3 days, while candies can endure for six to nine months. Dispensary-bought edibles often contain preservatives that extend their shelf lives, but it's crucial to check the packaging for an expiration date.

  • Flower: Well-cured and stored cannabis flower can last up to eighteen months, but potency often decreases after six months. It's advisable to consume within the first six months for optimal effects. Proper drying, curing, and storage conditions play a significant role in preserving the flower's quality.

  • Hash and Wax: The shelf life of hash and wax depends on flower content. Hash may last around eighteen months, while wax can potentially last up to two years, though potency might decline after twelve to eighteen months. Storing these products in a cool, dry, and dark place is crucial to preventing mold growth and preserving potency.

  • Rick Simpson Oil (RSO): With an alcohol infusion, RSO can last an estimated ten years if stored properly. The alcohol acts as a preservative, significantly extending the shelf life of this concentrated cannabis oil.

  • Vapes: Vape pens, typically not made with plant material, may last two to three years without significant potency loss. Their longevity is attributed to their enclosed design, protecting the cannabis extract from environmental factors.

  • Topicals: Gels, creams, and oils usually last up to two years, while soaps, due to their alkaline nature, may last longer. The stability of these products depends on the ingredients used and proper storage conditions.

  • CBD Tinctures: CBD tinctures, especially alcohol-infused ones, can have a shelf life of up to ten years. Occasionally, oil-based tinctures may last up to two years. The high-proof alcohol acts as a preservative, preventing the degradation of cannabinoids over time.

Read Also: How To Germinate Marijuana Seeds?

How to Check for Expiration

Identifying expired cannabis involves paying attention to sensory and visual cues:

  • Smell: An unfamiliar or unpleasant scent, especially akin to rotten eggs, may indicate expiration. However, it's essential to note that some strains naturally have a "skunky" scent, making it necessary for experienced users to discern the difference.

Related: What Does Marijuana Smell Like?

  • Texture: If the cannabis becomes fragile or crumbles easily, it might be past its prime. It's crucial to remember the product's texture when initially purchased to notice any future changes.

  • Mold: Visible signs of mold, such as white fuzz or discolored spots, signal the product is no longer fresh. Mold growth poses health risks, and consuming contaminated cannabis should be avoided.

Cannabis Storage Tips

Proper storage significantly impacts cannabis shelf life. Consider these tips:

  • Proper Container: Glass mason jars with airtight lids are ideal for long-term storage, preserving aromas and flavors. Metal containers or vacuum-sealed plastic bags work for short-term storage (usually a week or less). The choice of container depends on the duration of storage and desired preservation of product quality.

  • Low Humidity: Keep cannabis in low-humidity environments to prevent moisture-induced degradation, with around 60% humidity being ideal. Excessive humidity can lead to mold growth and compromise the product's quality.

  • Sunlight Avoidance: Store cannabis products in dark areas like cupboards to avoid direct sunlight exposure, which can shorten shelf life. Exposure to UV light can degrade cannabinoids and terpenes, diminishing the overall potency of the product.

Related: How to Safely Store Cannabis: 8 Tips for Maintaining Freshness and Potency

Therefore, the expiration date of cannabis depends on the product type and storage method. It is important to read your medical marijuana label and/or consult with a physician to know when your medical marijuana expires, and there are many visual clues to look out for. 

For those seeking medical cannabis treatment, make sure to look at the qualifying conditions for obtaining a medical marijuana card in your state. Some states allow marijuana and cannabis products to be sold to all adults ages 21+. It is recommended to contact a marijuana doctor in your area to begin the process.

Conclusion 

In conclusion, while marijuana does have a shelf life, proper storage practices can extend its usability. Whether you're a medical cannabis user or a recreational enthusiast, being mindful of expiration dates and storage conditions ensures a more satisfying and effective cannabis experience.

Headshot of Steven Fiore, MD

This article has been reviewed by Steven Fiore, MD.

Previous
Previous

Does Smoking Weed Make You Age?

Next
Next

How To Decide Which Strains To Try