Because the rules changed. Until March 2025, Canadian regulations required cannabis packaging to be opaque, which is why every gram of flower sold in this country arrived in a sealed tin or pouch you could not see into. SOR/2025-43 permits cut-out windows and fully transparent containers for dried and fresh cannabis, along with two-tone lids, QR codes, accordion and peel-back labels, printed inserts and recycling symbols. The label transition ended on 12 March 2026, so shelves have now turned over. A window is genuinely useful. It is also not a guarantee of anything.
Here is what changed, what a window does and does not tell you, and why the packaging looked the way it did for the first six years of legalization.
The short version
- Windows and clear containers are now permitted for dried cannabis, fresh cannabis and cannabis plant seeds. Not for edibles, extracts or topicals.
- There is no size limit on a window. Health Canada's guidance says so directly, subject to all the labelling requirements still fitting on the package.
- Plain packaging otherwise survives intact. One uniform colour, no fluorescent or metallic finishes, no raised features, one brand element, the standardized cannabis symbol, the yellow health warning.
- A window shows you appearance only. It tells you about trim, structure and colour. It cannot tell you about aroma, moisture, cure or how the product was grown.
- The label still carries the facts. Total THC, total CBD, packaging date, and the licence holder are all printed, not visible.
Why the packaging looked the way it did
The plain packaging regime came in with legalization in October 2018 and it was deliberately restrictive. The policy goal was to keep cannabis packages from working as advertising, particularly toward young people, and the drafting went a long way to achieve it.
The result was a set of constraints most consumer goods never face. A container had to be one uniform colour inside and out. Fluorescent and metallic finishes were prohibited, with a narrow exception where a surface is made of metal. No embossing, no decorative ridges, no raised features of any kind. One brand element beyond the brand name, and if that element is an image it has to be no larger than the standardized cannabis symbol, which is 1.27 cm square at minimum.
On top of that sat the mandatory furniture: the standardized cannabis symbol in the upper left quarter of the principal display panel on any product above 10 micrograms of THC per gram, and a health warning message in a yellow box, rotated across containers so that each of the warnings appears on roughly equal numbers of packages, in type at least 7 points and never smaller than the brand name.
Opacity was part of that package. The product itself is a visual thing, and showing it was treated as a form of promotion. So flower went into tins and mylar, and the only way to judge it was to open it after you had already paid.
What SOR/2025-43 permits now
The amending instrument is the Regulations Amending Certain Regulations Concerning Cannabis (Streamlining of Requirements), registered 26 February 2025 and published in the Canada Gazette, Part II on 12 March 2025. The packaging permissions came into force the day it was published. The label changes carried a twelve-month transition that closed on 12 March 2026.
| Change | What it allows | Applies to |
|---|---|---|
| Cut-out windows | An opening in the package so the product is visible. The window must be clear or the colour of the packaging, with a smooth texture and no raised features. No size limit. | Dried cannabis, fresh cannabis, cannabis plant seeds |
| Transparent containers | The whole container may be see-through, not just a panel. | Dried cannabis, fresh cannabis, plus plants and seeds as before |
| Two-tone containers | The lid or cap may be a different colour from the container body. | All cannabis products |
| QR codes | An additional bar code, such as a QR code, on the product label. | All cannabis products |
| Accordion and peel-back labels | Multi-panel labels, previously limited to smaller packages, now permitted at all package sizes. | All cannabis products |
| Inserts and leaflets | Printed material inside the package carrying product and brand information. | All cannabis products |
| Wrapper markings | Images and information on wrappers where another federal or provincial act requires them, which is how recycling symbols arrived. | All cannabis products |
The same regulation also removed the cumulative 10 mg THC cap on an outer package of edibles, which is why ten-packs appeared at the same time. That change is covered separately in Are 100mg edibles actually legal in Canada now?
What a window actually tells you
Quite a lot, if you know what you are looking at. Appearance is real information about flower, and being able to see it before purchase closes a gap that existed for six years.
Structure
Whether you are looking at intact, hand-sized buds or at small fragments and loose material. Both are legitimate products at different prices, but they are not the same thing, and the package weight alone never distinguished them.
Trim
How closely the leaf material has been cut back. Machine trimming and hand trimming produce visibly different results, and hand trimmed is a claim producers are permitted to make and that you can now partly check.
Colour
Canadian flower ranges across greens, and some cultivars carry purple. What a window makes visible is whether colour is consistent through the package or whether there is browning and yellowing that suggests age or light exposure.
Density and fill
How much of the container the product occupies. A 3.5 g package can be one dense bud or a loosely packed handful, and the visual difference is immediate.
Visible trichomes
The resin glands on the surface of the flower. At arm's length through plastic you will not resolve much, but a heavy frosting is generally visible and a complete absence of it is too.
Our longer walk-through of what to look at is in How to choose cannabis flower.
What a window does not tell you
This is the honest part, and it is the reason we would not treat a window as a shortcut.
It says nothing about aroma
Aroma comes from terpenes, and terpenes are volatile compounds you cannot see. Two packages that look identical through plastic can be very different on the nose. Some Canadian producers now print a terpene profile on the label, which is more informative than the window is. We have written about what those compounds are in Terpenes, explained.
It says nothing about moisture or cure
How flower was dried and cured determines how it breaks up, how it burns and how it smells. Dry, brittle flower and properly cured flower can look nearly the same through a window. You find out when you open the package.
It says nothing about the date
The packaging date is printed on the label, not visible through the window. Flower that has sat for a year can look entirely presentable. The date is the fact, and it is the single most useful number on a flower package after the cannabinoid content.
It says nothing about cannabinoid content
Total THC and total CBD are measured figures from a laboratory. There is no visual proxy for them. A package that looks dense and frosted can test lower than one that looks unremarkable. The numbers are on the label and we have written about how to read them in CBD vs THC: reading the numbers on the package.
It says nothing about how the product was grown
Indoor, greenhouse or outdoor, living soil or hydroponic, small batch or large scale: none of it is visible. Those are label and brand claims, verifiable or not on their own terms, and a window does not touch them.
A window is not a quality guarantee
It is worth saying plainly. A window is a view of the outside of the product in the position it happened to settle in. Packages can be filled so that the most presentable material faces the opening. Clear plastic distorts colour. Store lighting distorts it further. And appearance is only one of several attributes that matter, and not the one with the most information in it.
What the window genuinely does is remove a piece of pure uncertainty. Before March 2025 you could not tell intact flower from fragments until you got home. Now you can. That is a real improvement and it is also the whole of the improvement. Treat it as one input beside the packaging date, the cannabinoid figures and the producer, rather than as a substitute for them.
Transparent containers and light
One practical consequence of clear packaging is worth flagging, because it changes what you should do once you get home.
Light degrades cannabis. That is why the traditional storage advice is a cool, dark place in an airtight container. Opaque packaging did that job for you by default. A fully transparent container does not, and a windowed package does it only partially.
This does not make clear packaging a problem. Product moves through a retail shelf quickly and is stored in a warehouse before that. It does mean that a transparent container sitting on a windowsill or a kitchen counter at home is a different proposition from a tin in a cupboard. Keep it dark, and our full storage notes are in How to store cannabis.
The other changes, and what they are for
Two-tone lids and containers
The smallest change and the most visible one. Allowing a cap to differ in colour from the body gives producers a way to distinguish product lines at a glance without breaking the one-uniform-colour rule for each surface. On a retail shelf this makes lines easier to tell apart, which mostly makes conversation at the counter quicker.
QR codes
An additional bar code, typically a QR code, is now permitted on any cannabis product label. The practical uses are certificates of analysis, batch information, harvest and cure detail, and recycling instructions, none of which would fit on a small label. What sits behind the code is still subject to the same promotion rules as anything else a licence holder publishes.
Accordion and peel-back labels
These were already allowed on small containers, where the mandatory information genuinely could not fit on one panel. Extending them to all package sizes means a producer can print more without shrinking the required text. For a consumer this is the difference between a label that lists a terpene profile and one that has no room for it.
Inserts and leaflets
Printed material inside the package. This is where cultivar background, cultivation notes and cure detail can now live. Whether producers use the space well varies, but it is the first place in Canadian cannabis packaging where there is room to say anything at length.
Recycling symbols
Wrappers may now carry images and information required by other federal or provincial legislation. In practice that means recycling and disposal markings can appear where they could not before, which matters given how much packaging the category produces.
What did not change
The plain packaging framework is intact. Specifically:
- One uniform colour per surface. Interior, exterior and any panel must each be a single colour. The two-tone permission is between the lid and the body, not within a surface.
- No fluorescent or metallic colours, with a narrow exception where the surface is made of metal.
- No raised features, no embossing, no decorative ridges. Windows must be smooth too.
- One brand element beyond the brand name, sized no larger than the standardized cannabis symbol if it is an image.
- The standardized cannabis symbol, in the upper left quarter of the principal display panel, at least 1.27 cm square, on any product above 10 micrograms of THC per gram.
- The health warning message in its yellow box on the principal display panel, rotated across containers, in type at least 7 points and at least as large as the brand name.
- Child-resistant immediate containers, meeting the standard set out in the Food and Drugs Regulations. Plants and seeds are exempt.
- No depictions of persons, characters or animals anywhere on a package, and nothing visible through a window changes that.
- The 30 g dried equivalent ceiling on what an outermost container may hold.
The label changed too
Alongside the packaging permissions, SOR/2025-43 simplified what the label must say about potency. Labels now carry total THC and total CBD, with the older concentration statements removed as redundant. A variance of up to seven days is permitted on dates.
The transition mattered here. Labels showing actual THC and CBD quantities in bold were permitted for twelve months, until 12 March 2026. After that date the bold treatment is no longer allowed, and inventory already in the hands of authorized sellers could be sold through. That is the mechanical reason shelves looked mixed through late 2025 and early 2026 and look consistent now.
If you are reading a Canadian label closely for the first time, the practical order is: packaging date, total THC and total CBD, format and weight, licence holder. Everything else is secondary.
Does any of this apply to other formats?
Windows and transparent containers apply only to dried cannabis, fresh cannabis, plants and seeds. Edibles, extracts, topicals and vape hardware stay opaque.
The colour, QR code, accordion label, insert and wrapper permissions apply across all cannabis products, so a vape or a package of hash can carry a QR code and a leaflet even though it cannot carry a window. Our explainers on those categories are in Extracts and concentrates, explained and Pre-rolls, explained.
Where to read the rules yourself
- SOR/2025-43 in the Canada Gazette, Part II, with the Regulatory Impact Analysis Statement setting out the reasoning.
- Health Canada's summary of changes following the streamlining regulations, which is the shortest complete account.
- Health Canada's packaging and labelling guide, the working reference for every requirement described above.
What to do with all this in a store
Use the window for what it is good at. Look at structure, trim, fill and colour, and let it settle the questions it can settle. Then turn the package over and read the date and the cannabinoid figures, because those are the facts a window cannot carry.
If you are new to this and would rather have someone walk you through a label in person, First Time in a Dispensary? sets out what happens at the counter, and you can see what is currently on our shelf in our full range. We are at 811 Dundas St W in Toronto, and our hours and directions are on the visit page. Our staff can explain anything printed on a package. They cannot give medical advice, and we do not make claims about what a product will do for you.