The register that decides what may be grown
One public register determines which varieties may lawfully be cultivated in the Union. It is maintained by the Commission, it is searchable by anyone, and a variety absent from it may not be grown for the market.
It is also the only naming in this entire subject with a formal examination behind it. Every other name a buyer encounters is commercial vocabulary; a catalogue name is a registered identity.
This page covers what the catalogue is, what a variety must demonstrate to enter it, what the content requirement is, how it connects to agricultural support, and why a catalogue name is worth asking about.
⚠️ Scope. This page describes a process and what can be verified from documents. It does not describe what a product does to a person, gives no amounts, and does not replace a healthcare professional.
🔴 What the catalogue is
The instrument
A common catalogue of varieties of agricultural plant species, compiled by the Commission from national lists maintained by member states.
What it governs
Which varieties may be marketed and cultivated within the Union. Seed of an unlisted variety may not be placed on the market.
How a variety gets there
Through a national list first. A member state examines a variety, adds it, and the Commission compiles national lists into the common one.
Who can consult it
Anyone. It is a public database and it takes minutes to search.
What a variety must demonstrate
Distinctness
Clearly distinguishable from any other variety whose existence is a matter of common knowledge, by at least one characteristic.
Uniformity
Sufficiently uniform in the relevant characteristics, subject to the variation expected from its propagation method.
Stability
Remaining true to its description after repeated propagation. What is registered must persist.
Why all three
Because a variety name has to identify something reproducible. Without the three criteria the name would denote nothing specific.
The content requirement
What applies
For this species, cultivation for the market is restricted to varieties whose content stays within the established limit.
The calculation
Total THC, being delta-9-THC plus THCA multiplied by 0.877. It is the figure that determines compliance throughout.
Where it is checked
Through official sampling and analysis under the agricultural framework, on growing crops rather than solely on declarations.
What happens above it
The crop is not eligible, and consequences follow under national implementation. It is enforced rather than nominal.
The link to agricultural support
The framework
Support under the Common Agricultural Policy for this crop is conditional on cultivating a listed variety within the content limit.
What that means for growers
The catalogue is not an abstraction. It determines eligibility for payments, which for many holdings is decisive.
The documentation
Certified seed labels are what evidence the variety. Growers keep them and authorities ask for them.
Why that matters here
Because it means the catalogue name attached to a crop is documented upstream, even where nothing carries it downstream.
🔴 Why a catalogue name is worth asking for
It is verifiable
You can search the register yourself. No other name in this subject can be checked against anything.
It was examined
Distinctness, uniformity, stability, and the content limit. Four things assessed by an authority rather than asserted by a seller.
It indicates proximity
A seller who knows it is generally closer to the production than one who knows only a commercial name.
What a vague answer means
That the name was not passed down the chain. Common, informative, and not by itself disqualifying.
What the catalogue does not do
Guarantee quality
It examines identity and compliance. Nothing about how a particular crop was grown, dried or handled.
Describe composition beyond the limit
The content requirement concerns one figure. Everything else about a variety’s profile is outside the examination.
Cover commercial names
A product name is not a variety name. The two coexist and only one is registered.
Apply outside the Union
It governs cultivation and marketing within it. Material from elsewhere follows the applicable import framework instead.
Commercial names against catalogue names
What a commercial name is
A marketing identifier, applied by whoever is selling, with no register and no verification.
Why they proliferate
They are memorable, they differentiate, and they cost nothing to invent.
What they convey
A general character at best. Two products carrying one commercial name may come from different varieties entirely.
The question that separates them
Whether the name given is the catalogue name. It is a direct question with a checkable answer.
Plant variety rights, which are separate
What they are
An intellectual property right over a variety, granted at Union level, giving the holder control over its commercial propagation.
How they relate to the catalogue
They do not overlap. Listing concerns marketability; the right concerns ownership. A variety can be listed and unprotected, or protected and listed.
Why it matters commercially
Because propagating a protected variety without authorisation is an infringement, which affects growers rather than buyers.
What a buyer sees
Nothing directly. It is context for how the seed supply chain is organised.
Searching the register yourself
What you need
The variety name. Nothing else.
What you get
Whether it is listed, in which member state’s national list, and the associated particulars.
How long it takes
A minute or two. It is a straightforward database search.
What it settles
Whether the name you were given denotes a registered variety or a commercial identity. That is a real distinction and it is rarely checked.
Why so few products state it
It is not required
Nothing obliges a retailer to name the variety, and where it is named, nothing obliges it to be the registered one.
It is not marketable
A catalogue name is functional rather than evocative. Commercial names sell better and always will.
The chain loses it
Each step from grower to retailer can drop the information, and by the point of sale it frequently has been.
What that costs a buyer
The one verifiable identity in the whole subject, replaced by a name that identifies nothing.
What listing does not settle about a batch
The growing
Conditions, timing and handling all vary between crops of a listed variety. The catalogue examines the variety rather than the crop.
The content in a given batch
The limit constrains the variety. What a particular batch measured is on its certificate and nowhere else.
The contaminants
Entirely outside the catalogue’s scope. They are a food safety question addressed by the panels.
The processing
Everything after harvest. The catalogue’s concern ends at the plant.
How the sampling actually works
Who does it
Competent authorities in each member state, on growing crops, under procedures set out in the framework.
When
At a defined point in the growing season, when the crop is at the stage the procedure specifies.
What is taken
Samples from specified parts of a defined number of plants, following a protocol designed to be representative rather than convenient.
Why the detail matters
Because it means the content limit is a tested obligation rather than a declared one. Growers are inspected.
What happens when a crop exceeds the limit
The immediate consequence
The crop is not eligible under the support framework, and national implementation determines what follows.
Why it can happen innocently
Content varies with growing conditions, and a listed variety can express above its usual range in an unusual season.
What the framework provides
Procedures for verification and, in some circumstances, for a second analysis. It is not a single irreversible reading.
What it means for the market
That material reaching the compliant market has passed a check upstream. It is one of the stronger parts of the framework.
Adding a variety to the catalogue
Who applies
The breeder or maintainer, to a member state authority.
What the examination involves
Growing trials over more than one season, comparing the candidate against known varieties on defined characteristics.
How long it takes
Years. It is a slow process by design, because stability across propagations cannot be demonstrated quickly.
What it costs
Substantial fees and the trial period. It is a serious commitment and it is why the register is not casually populated.
Maintenance after listing
The obligation
A listed variety must be maintained, meaning that the person responsible keeps propagating material true to the registered description.
Why it exists
Because a variety that drifts stops being what was registered. Maintenance is what keeps the name meaningful over time.
The renewal
Listings are periodically renewed rather than permanent. A variety no longer maintained falls off.
What that means for buyers
That a catalogue name refers to something actively kept true, which is more than can be said for any commercial name.
The national lists underneath
How they work
Each member state maintains its own list, and the common catalogue is compiled from them.
What that implies
A variety listed in one member state may lawfully be marketed across the Union once it appears in the common catalogue.
Why some varieties appear from particular countries
Because breeding activity concentrates where the crop has been cultivated continuously. The geographical pattern reflects that history.
Where to look
The common catalogue directly. It is the compiled version and it is what governs Union-wide marketing.
What the catalogue reveals about the market
The number of varieties
Modest. The register for this species contains a manageable list rather than the hundreds of names circulating commercially.
What that gap implies
That many commercial names describe the same underlying varieties, renamed for differentiation. It is the clearest evidence of how naming works in this category.
Why nobody is deceived exactly
Because a commercial name does not claim to be a registered one. The confusion arises from buyers assuming an equivalence that was never asserted.
What the register therefore offers
A way to see through the naming to what was actually grown, for anyone prepared to ask and search.
The one question, and why it works
What to ask
Which catalogue variety the material came from. Eleven words.
Why it is a fair question
Because a grower had to declare it, a certified seed label recorded it, and support eligibility depended on it. The information exists upstream in every case.
What a specific answer tells you
That the chain preserved the information, which means the seller is close enough to production to have received it.
What no answer tells you
That the chain lost it, which is common and which is itself worth knowing before paying a premium for provenance.
The habit worth forming
Search before you buy
If a variety name is given, spend the minute checking whether it appears in the register. The answer changes what the name is worth.
What you learn either way
A listed name means an examined identity behind the product. An absent one means a commercial label, which is not a fault and is not the same thing.
A short glossary
Common catalogue
The Union register of agricultural plant varieties permitted for cultivation and marketing, compiled from national lists.
Distinctness, uniformity, stability
The three criteria a variety must satisfy for registration, examined by a member state authority.
Total THC
Delta-9-THC plus THCA multiplied by 0.877, which is the compliance figure applied throughout this framework.
Certified seed label
The document evidencing which variety a grower sowed, retained for support eligibility and inspection.
Plant variety right
A separate intellectual property right over a variety, concerning ownership rather than marketability.
The five checks that apply to any product
The batch certificate
Request it with the number printed on the packaging. A general document for the product line does not cover this batch, and those differences are exactly what it should record.
Total THC
Delta-9-THC plus THCA multiplied by 0.877, because THCA becomes THC under heat and the limit applies to the sum, not to either value alone.
Price per milligram
A division, not an opinion. The only figure that makes two products comparable, whatever the format, process and pack size.
The claims
Without an authorisation number in the EU Register these are assertions, not data — and for cannabidiol that register contains no authorised entry to this day.
The seller’s details
Company name, address and contact. Without them there is also no counterparty to turn to if something turns out to be wrong.
How this connects to the rest
With variety naming
The catalogue is what separates a registered identity from a commercial one, and it is the only such separation available.
With the compliance figure
The same total THC calculation runs through cultivation, processing and the finished product.
With the certificate
The catalogue governs the plant; the certificate measures the batch. They answer different questions.
With regional names
Style references have no register behind them. This is the register they are frequently mistaken for having.
What this is for in practice
Ask for the catalogue name
It is the one name in this subject you can verify yourself, in a public database, in a minute.
Search it
Whether it is listed, and where. The answer settles what the name actually denotes.
Do not over-read it
Listing concerns identity and compliance. It says nothing about how a particular crop was grown or handled.
Then read the certificate
For the batch, for content and for contaminants. The two documents cover different things.
Frequently asked questions
What is the common catalogue? The Union register of agricultural plant varieties permitted for cultivation and marketing, compiled from member states’ national lists.
Can I search it? Yes. It is a public database and a search takes a minute.
What must a variety demonstrate? Distinctness, uniformity and stability, examined by a member state authority, plus compliance with the content limit for this species.
What is the content limit based on? Total THC, calculated as delta-9-THC plus THCA multiplied by 0.877. The same figure applies throughout.
Why does it matter to a grower? Support under the Common Agricultural Policy is conditional on cultivating a listed variety within the limit.
Is a commercial name a variety name? No. Commercial names are marketing identifiers with no register and no verification behind them.
Why do so few products state the catalogue name? Nothing requires it, commercial names sell better, and the information is frequently lost between grower and retailer.
Does listing guarantee quality? No. It examines identity and compliance, not how a particular crop was grown, dried or handled.
What are plant variety rights? A separate intellectual property right concerning ownership of a variety rather than whether it may be marketed.
What should I ask a seller? Whether the variety name they give is the catalogue name. It is the one answer you can check independently.
What we check and what we do not
We check what can be checked from documents: official registers, declared contents, certificates of analysis, arithmetic. We test no products, rank nothing, and assert no effects.
Almost every name in this subject is invented by whoever is selling. This one is not: it was examined by an authority, entered in a public register, and can be checked by anyone in about a minute.
That makes it the single most useful thing to ask a seller for, and the least often given. A specific catalogue name tells you that someone in the chain knows what was actually grown; a commercial name tells you that someone in marketing was creative.