cannabis terpenes graphic

Storing Weed to Preserve Terpenes (& How Long Do They Last)

In the world of cannabis, cannabinoids like THC and CBD tend to garner the most attention, but another type of compound has increasingly been a subject of interest: terpenes. What exactly are terpenes, and why should you care? Let's dig a little deeper.

What are terpenes?

Terpenes are plant-derived compounds that are well-known for creating scents that give plants their distinct aromatics. Terpenes are most commonly associated with weed because the cannabis plant contains such high concentrations.

Whether you buy a full-spectrum extract, terp sauce, or flower, you will want to protect your valuable terps. Unfortunately, cannabis terpenes are volatile and far more sensitive to things like heat, oxygen, and light than cannabinoids. So, how do you store weed to preserve the terpenes and retain their therapeutic value and quality?

How to Store Weed to Preserve Terpenes 

weed storage plastic vs glass

Terpenes are sensitive to light, oxygen, moisture, and heat, which are the same threats to watch for with cannabinoids. However, terpenes can be even more sensitive to these threats, which means you will have to be even more vigilant with your storage efforts. 


Chemicals found in plastics have been known to degrade terpenes, so first and foremost, avoid storing in plastic bags or containers. Store your terpene-rich product in an airtight, glass container like an Evergreen jar. Other tips to remember:

  • Keep the storage container at an ambient temperature (around 72 degrees F or lower)
  • Keep the humidity level between 55 and 65 percent
  • Make sure the container has an opaque covering, or is in a dark place with no exposure to sunlight
  • Open the container in which your terpenes are stored as infrequently as possible

Note: The more the container is opened, the more the terpenes are exposed to oxygen, temperature and humidity variations.

How long do terpenes last?

Unfortunately, weed doesn't last forever—both cannabinoids and terpenes can and do break down with time. The rate of evaporation or breakdown varies depending on how the terpenes are stored. If you follow all the best storage recommendations for keeping weed fresh, you can fully expect most terpenes in your flower or terpene-rich product to last for about a year.

Other Terpene Storage FAQs

Does salt absorb terpenes?

It is a misconception that humidity control devices made with salt will affect terpenes. Salt incorporated into a humidification device will not degrade the terpenes in your product at all; only work to help protect them by maintaining the appropriate humidity level in your storage container. 

What temp destroys terpenes?

Different terpenes can start to deteriorate or evaporate at different temperatures. Some are extremely delicate — some may even evaporate at temperatures as low as 70 degrees. For this reason, it is best to keep terpenes and terpene-rich products stored at room temperature or below.

How to preserve terpenes in your fresh weed?

If you are concerned about protecting the terpenes in cured flower specifically, there are a few added things to remember. For one, make sure to store different weed strains separately. Terpenes can cross over between flower strains, which changes the flavor and aromatics of the plant. This is especially possible when storing weed long-term. Two, handle your stash as little as possible. The delicate trichomes where the terpenes are concentrated are sensitive to the heat and oils transferred from your fingers.

What is a terpene shield?

Terpene Shield is a trademark of Boveda, who make disposable humidity packets that are designed to be used inside a stash jar. The “shield” refers to humidity control, which is key to the protection of your terpenes, as dried out buds tend to lose terpenes quickly.

Protect Weed Terpenes with the Best Storage Solutions

Terpenes mean so much to the experience, whether you are smoking flower or dabbing a terpene-rich concentrate. The best storage solutions and methods ensure the valuable compounds are well-protected, and you have the best experience. Be sure to take a look at our collection of storage and humidity-control solutions at Evergreen.