If you’re serious about keeping your flower as fresh, potent, and flavorful as the day you bought it, choosing the right cannabis jars is an essential part of optimal cannabis consumption. With so many options, how do you know which stash jars will do the important job of protecting your valuable flower from light, air, and moisture? To answer this, we lined up three of the most talked-about names in cannabis storage— the Evergreen Storage Solution, the Session Stash Jar, and the Stashlogix SmartJar—to discover which cannabis jars deliver the best balance of preservation, functionality, and style.
Making the Comparison
After researching each of the three stash jars, we’ve broken down the details and put together a comparison with the benefits and disadvantages of each storage option.
Evergreen Storage Solution With Evergreen Pods: The Freshness Powerhouse
More than just stylish stash jars, the Evergreen Storage Solution with the Evergreen Humidification Pod is a high-performance storage solution designed to actively protect your cannabis. Inspired by laboratory-grade storage standards, Evergreen pairs UV-protective silicone sleeves with rechargeable, innovative two-way humidity pods to maintain a perfect internal environment. This means your flower stays hydrated, your terpenes remain intact, and your cannabinoids don't degrade.
Where Evergreen Stands out:
Freshness is the key standout for this weed jar, offering:
- Food-grade glass for purity.
- UV-blocking sleeve to prevent terpene degradation and prevent against drop damage.
- Rechargeable, reusable Evergreen Pod to keep flower from drying out or growing mold.
- Airtight, writeable lids for efficient, smell-proof storage.
- Available in two sizes and a variety of fun colors
- Easy-clean and dishwasher-safe materials
Evergreen jars are built for both durability and discretion. Curious how they compare to plastic or mylar? Check Evergreen’s Jars vs Bags comparison for a detailed explanation.
Where Evergreen falls short:
- No built-In visual humidity indicator: While the Evergreen Storage Solution features a rechargeable, two-way reusable humidity system, it doesn’t include a built-in gauge to see real-time humidity levels like Stashlogix SmartJar’s analog gauge, although some reviewers suggest it is not consistently reliable.
Session Goods Stash Jar: Minimalist Vibes, Moderate Protection
The Session Goods Stash Jar brings the minimalist vibe to the cannabis stash jar options. The designers went for clean lines and a smooth glass jar that sits atop a handy storage compartment for lighters and other paraphernalia. It offers a matte silicone sleeve and press-fit lid designed to blend in with modern decor while holding your stash in subtle style.
Where Session stands out:
- These cannabis jars offer a sleek, compact design.
- They have decent odor protection, making them okay for casual-to-daily use.
- As far as stash jars go, they are a good option for storing small amounts of cannabis.
- They have a built-in storage compartment for accessories.
Where Session falls short:
- Their cannabis jars offer no humidity regulation.
- The press-fit lid isn’t as airtight, so your flower’s freshness will fade faster than in Evergreen’s controlled environment, for example.
- The accessory compartment can be great for casual users storing a single strain, but it's wasted space if you’re storing multiple jars’ worth of cannabis, as a large percentage of each jar’s volume is devoted to accessory storage.
- Only available in gray, and only in one size.
Stashlogix Bamboo SmartJar: Eco-Friendly Storage with Built-In Smarts
This upgraded Stashlogix SmartJar bridges the gap between sustainability and smart functionality. It’s a glass jar available in an emerald-green option that blocks UV light, and its sustainable bamboo lid offers a silicone seal for airtight odor control (avoid the clear glass option unless it will always be stored in a dark location). It’s a good choice for casual consumers who want a system that offers visual freshness tracking and an eco-friendly design.
Where Stashlogix stands out:
- Built-in humidity sensor to quickly gauge internal moisture levels.
- 2-way humidity packs maintain 55–65% RH, which is ideal for preserving cannabis and other herbs.
- These cannabis jars are crafted with eco-conscious materials, like sustainable bamboo lids.
- They offer good odor control, using a silicone gasket to fit the bamboo lid.
- Available in four sizes.
Where Stashlogix falls short:
- Its humidity gauge is analog only and low-precision, which may lead users to unknowingly rely on imprecise readings.
- The jar is designed to be used with disposable humidity packets, instead of something like the rechargeable and reusable Evergreen Pods.
- The way the SmartJar’s humidor protrudes from the top prohibits stacking, making it more of a stand-alone system and not as ideal for mass storage.
- Some users report Stashlogix’s bamboo lid seal can be stiff, which can affect the fit and protection and become an issue for frequent cannabis users.
- Bamboo is an organic material, and is not as airtight as materials like glass or metal.
- Only available in clear and green glass with no drop protection.
Final Take: Overall Best Storage Systems
- Evergreen Storage Solution: Best overall cannabis jars for reliable humidity control and freshness with the rechargeable Evergreen Pod, and a cannabis-specific design, making for a complete system.
- Stashlogix Bamboo SmartJar: Best eco-friendly option with built-in humidity monitoring (note: these eco benefits are reduced somewhat by use of disposable humidity packs).
- Session Stash Jar: Best jar for minimalist style and casual use.