FLOWER STORAGE · ADULTS 21+
Choose the right packet for the flower you have.
A practical comparison of 58% and 62% RH, with current pack instructions and replacement checks.
Featured answer
Choose a 58% flower pack if you prefer a slightly drier feel; choose 62% if you prefer more pliable flower, provided the product instructions allow that choice. For newer Vivi Fresh packs, match the labeled capacity and RH together. Neither target proves that flower is safe or restores lost THC. Start with the exact packet, a sound seal, and suitable storage.
58% RH
A lower humidity target, associated with slightly drier flower.
62% RH
A higher target, associated with a more pliable feel.
Capacity matters
The pack’s storage capacity is a separate specification from RH.
Check condition
Humidity control cannot certify or decontaminate flower.
Which situation matches yours?
| Your situation | Useful next step | What to avoid |
|---|---|---|
| You can choose either 58% or 62% for the same flower product | Use the maker’s directions, then your texture preference. | Calling one target universally best. |
| Your packet is labeled Vivi Fresh | Match its capacity and RH to current instructions. | Applying an older Boveda size chart automatically. |
| A new packet has a small hard lump | Check the brand’s explanation before discarding it. | Assuming one crystal means a spent packet. |
| Flower looks contaminated, wet, or suspect | Stop use and contact the seller with the batch details. | Trying to rescue it with a packet. |
The number is a storage humidity target. Packet capacity, container condition, and the flower’s starting condition matter too.
This guide covers purchased, dried flower. Identify any packet already inside its package before buying another one.
Adult-use note: General product-care education for adults 21+ where lawful, not medical advice. Keep flower and packets locked away from children and pets.
Related guide: how to assess old, dry, or suspect flower.
Mary Jane’s Bakery Co. Editorial Team · Updated October 20, 2026. Source-based editorial draft using manufacturer instructions and measurement references. No hands-on comparison or medical review is claimed.
1. What changes between 58% and 62%?
How a two-way humidity pack works
Inside a sealed container, a two-way pack releases water vapor when the surrounding air is too dry and absorbs moisture when it is too humid for its target. It is a buffer with finite working capacity, not a source of unlimited correction. It cannot fix a poor seal or turn contaminated flower into a safe product.
Integra explains the absorb-and-release mechanism for its products. Keep the working sachet intact; the contents are not an additive to pour onto flower.
| Question | 58% target | 62% target |
|---|---|---|
| Likely texture preference | Slightly drier | More pliable or sticky |
| Difference between targets | Four percentage points lower than 62%. | Four percentage points higher than 58%. |
| Requires the right container? | Yes; use compatible sealed storage. | Yes; use compatible sealed storage. |
Boveda’s older cannabis instructions describes the texture distinction. It does not establish a universal winner. Use the lower or higher target only where the product directions support it.
Avoid a universal “58% for vaping” rule: manufacturer recommendations differ. For example, Integra’s guide markets its 62% format for vaporizers. Follow the exact flower, packet, and device instructions rather than treating every brand’s advice as interchangeable.
2. Read RH, capacity, and brand separately
RH describes surrounding-air humidity. Capacity is the flower quantity supported. Packet weight is a separate specification.
Boveda identifies Vivi as its herbal brand. Current Vivi Fresh guidance lists 58% for its ½-ounce and 1-ounce formats, and 62% for its 1-pound and 5-pound formats. Check the format you actually buy; do not treat that mapping as a rule for every brand.
Already have a pack? Record its brand, RH, capacity, and opening date. Ask the supplier if its identity is unclear.
Verified current capacity examples
| Current Vivi Fresh format | Packet weight listed | Flower capacity listed | RH target |
|---|---|---|---|
| ½ oz | 4 g | Up to 15 g | 58% |
| 1 oz | 8 g | Up to 30 g | 58% |
| 1 lb | 60 g | Up to 500 g | 62% |
| 5 lb | 320 g | Up to 2.5 kg | 62% |
Manufacturer specifications, checked October 20, 2026. Gram capacities are listed ratings, not exact ounce conversions. Confirm your current label.
Example: you have 28 g of purchased flower
Vivi’s current 1 oz format lists an 8 g packet for up to 30 g of flower at 58% RH. Here, 8 g describes the packet; it does not limit the flower to 8 g. This example identifies a compatible capacity from the maker’s chart. It does not establish the best target for every product.
For comparison, Integra’s 2 g, 55% RH packet is rated for up to 7 g. Use each maker’s own chart.
3. A simple setup for purchased flower
- Check condition and retain the batch label.
- Use the original package if suitable, or a compatible, clean, dry container. Keep the label.
- Match the packet capacity to the flower quantity.
- Remove outer wrapping only. Leave the working sachet intact; do not wet, cut, or tear it.
- Close securely; store indoors away from heat and sun.
Vivi’s placement instructions describe adding the intact pack. Vivi also permits direct contact with flower; confirm that allowance separately for a different product. For other basic equipment, see our flower accessories and storage guide.
4. Check the setup before changing the percentage
| What you notice | Check first | Next step |
|---|---|---|
| Reading changes after opening | Whether you compared the same conditions | Close the container; follow the meter’s stabilization directions. |
| A new Vivi pack contains a small crystal | Whether the wrapper remains intact | Consult the manufacturer’s crystal guidance. |
| Flower remains brittle | Packet identity, capacity, seal, and time | Ask the supplier if instructions do not resolve it. |
| Flower or pack is leaking, wet, or suspect | Physical condition and batch identity | Stop use; contact the seller. Do not add water. |
Vivi explains that small crystals can occur in a new pack without preventing it from working. That differs from a used pack becoming spent. Do not squeeze or puncture a packet to investigate.
AQUALAB explains that water activity measurement requires equilibrium and a defined temperature. A quick consumer jar reading does not by itself establish laboratory water activity, contamination status, or potency. ASTM’s D8197-22 listing concerns a water-activity range for dry flower; it is not a guarantee attached to a packet’s RH label.
Does an experiment prove 58% or 62% is better?
HWGrow reports a three-jar home experiment using a 62% pack with different starting humidities. Its observations illustrate movement toward that target in that setup. It is not a direct 58%-versus-62% trial, and the author identifies limits involving pack capacity and household sensors.
This is outside evidence, not Mary Jane’s test. It does not establish a universal winner, product safety, or comparative potency and terpene retention.
5. Replace according to the exact product
| Product or situation | Verified guidance |
|---|---|
| Current Vivi Fresh | Manufacturer recommends replacement every three months; actual service life varies. |
| Integra Boost with its indicator card | Manufacturer says to replace when the indicator turns bright blue. |
| Damaged or leaking packet | Set it aside and contact the supplier; do not reuse it. |
See Vivi’s replacement guidance and Integra’s indicator instructions. Vivi advises against mixing formats or other humidification devices and recharging used packs.
Vivi estimates 24–48 hours for adjustment depending on starting dryness in its timing guidance. That is not a promise that old flower regains its original chemistry. For mold concerns, stop using suspect material; CDC describes general mold-related health risks, not a storage percentage that certifies cannabis safety.
6. Apply the checks to Mary Jane flower
Buying flower and replacing a storage pack are separate decisions. If you already own suitable flower, start with its package directions. If you are also comparing Mary Jane products, the Harlequin CBD Hemp Buds page describes humidity-control packaging. Check the package-size options and ask which pack accompanies the batch you will receive before ordering a replacement.
You can also review ACDC CBD Hemp Buds. Ask for directions and a report matching the batch you will receive. This article does not verify the current batch’s potency, contaminant testing, pack brand, or pack percentage.
Comparing flower too? Review the CBD hemp flower range and its package information.
One useful question before buying
“For this product and package size, which humidity pack is included, what RH and flower capacity are printed on it, and what replacement directions apply?”
Confirm the actual package; a generic disclosure alone cannot establish its contents.
A practical Miami routine
Keep packages closed between checks, away from a hot vehicle, damp bag, bathroom, or direct sun. A humidity pack does not cool a container. For package-specific help, use the Miami shop information and bring the product name and batch details.
7. Frequently asked questions
Does 62% mean the flower is 62% water?
No. It is a target for surrounding-air relative humidity, not moisture content or THC percentage.
Can I put 58% and 62% packs together?
Do not mix targets. Follow the maker’s restrictions on formats and other humidification products.
Does one hard lump mean a new packet is bad?
Not necessarily. Vivi says small crystals can occur in new packs. Check its instructions and the intact wrapper.
Can a pack make moldy flower safe?
No. Stop using suspect flower and contact the seller. Storage equipment is not decontamination.
8. Sources used in this guide
| Source | Use in this guide |
|---|---|
| Legacy Boveda instructions | Original 58%/62% texture distinction. |
| Vivi Fresh RH guidance | Current capacity-linked targets. |
| Vivi crystal guidance | New-packet texture exception. |
| Vivi replacement guidance | Current replacement recommendation. |
| Integra instructions | Brand-specific formats and indicator cue. |
| AQUALAB measurement reference | Equilibrium and temperature context. |
| ASTM D8197-22 public listing | Water-activity scope, not a certification of this article or any product. |
| Vivi Fresh current specifications | Format names, packet weights and rated flower capacities. |
| HWGrow’s experiment report | Third-party home observations and their stated limits; not a direct 58%/62% comparison. |
9. Choose the target after checking the packet
Choose by the product’s directions and texture preference. Verify capacity, keep the sachet intact, and investigate unexpected changes before switching percentages.
Responsible storage
Keep original labels and batch information, secure products away from children and pets, and do not use suspect flower. This guide does not provide medical advice or certify product safety. Ask a healthcare professional about health concerns or interactions.