Anyone searching for the THC limit in Germany will quickly come across different values: for industrial hemp and many CBD products, the THC content of a maximum of 0.3 percent is mainly relevant, while in road traffic limits apply in nanograms per millilitre of blood serum. The question “How much THC is allowed?” can therefore only be answered in the respective context. This guide objectively sets out the current legal framework, explains the measurement in the lab and shows why certificates of analysis are important for cannabis and CBD products. As of August 2026, it also applies that: products with THC content should only be used by adults; special protective rules apply for minors. You will find tested strains from industrial hemp in our CBD Flowers category.
THC Limit in Germany: the Short Answer
As of August 2026, a distinction must be made regarding the THC limit in Germany between products and road traffic. For industrial hemp, a THC content of no more than 0.3 percent is generally applied. This product limit mainly concerns strains and products made from industrial hemp; for CBD flowers, additional legal criteria may also play a role. The question “How much THC is allowed?” therefore cannot be answered generally for every cannabis product.
In road traffic, it is not about the THC content of cannabis, but about the concentration of the active substance in the blood. THC is assessed in blood serum, given in ng/ml, meaning nanograms per millilitre. For drivers, the THC limit of 3.5 ng/ml is therefore relevant; this corresponds to a limit of 3.5 nanograms of THC per millilitre of blood serum. Stricter rules may apply for certain groups, such as novice drivers.
This short answer does not replace individual legal advice. What is always decisive is the specific context, the current legal situation and the type of measurement.
What Does the 0.3 Percent Limit Mean?
In Germany, the THC limit of 0.3 percent refers to the maximum permitted THC content in plant material or in certain hemp products such as industrial hemp or CBD flowers, provided the further legal requirements are met. This does not mean how much THC would be allowed for consumption, but a product-related limit under the law. For the THC content of cannabis, it is therefore checked whether the material falls below this value or must be classified differently.
From 0.2 to 0.3 Percent: Historical Context
Previously, industrial hemp was governed by a THC value of 0.2 percent; today, the German Consumer Cannabis Act (KCanG) states a maximum value of 0.3 percent for industrial hemp. This change is important when assessing older articles, product information or lab reports: a value that may have been classified differently in the past can now fall under the current limit. However, the increase does not mean that all products with less than 0.3 percent are automatically unproblematic. What remains decisive is the specific type of product, the analysis and the legal classification. The increase mainly creates a clearer reference value.
Percentage Value Is Not the Same as an ng/ml Value
The percentage value must not be confused with measured values in road traffic. Product analyses state the proportion in the material, for example 0.3 percent. Blood tests, on the other hand, measure a concentration, for example in nanograms per millilitre of blood serum. The question “How much THC is allowed?” must therefore always be answered according to context: product law and blood serum measurement use different units and assess different matters.
How Is THC Content Measured in CBD Flowers?
The THC content of cannabis or CBD flowers cannot be reliably assessed by appearance, smell or origin. What matters is professional sampling and analysis in an ideally accredited laboratory, not a simple THC measuring device. There, chromatographic methods are generally used to determine the concentration of individual cannabinoids. What is relevant here is the stated value for THC in relation to the sample tested and the applicable THC limit. Reputable CBD flower categories regularly make such evidence available per batch.
Checking the Lab Certificate for Each Batch
A lab certificate should clearly show which batch it relates to. Also important are the date of analysis, the method used, the THC percentage value and the responsible laboratory. Ideally, it is already clear whether the statement refers to the specific flower batch and not just to a general strain description. This makes it easier to classify the possible THC content of cannabis-related products. Anyone comparing CBD flowers should therefore not only pay attention to product texts, but to batch-specific analysis documents.
Industrial Hemp, the EU Variety Catalogue and Other Strains
Industrial hemp concerns strains that are approved in the agricultural context and are based on the EU variety catalogue. This catalogue is an important point of reference for which hemp strains are intended for cannabis cultivation purposes within this framework. Other cannabis strains can have significantly different cannabinoid profiles. The question “How much THC is allowed?” therefore cannot be answered by the strain alone, but also depends on analysis, batch and the legal classification of cannabis in the respective context.
Which Value Applies in Road Traffic?
Regarding the THC limit in Germany, the value in road traffic is decisive for drivers: 3.5 ng/ml THC in blood serum is the relevant threshold. The question “How much THC is allowed?” therefore does not refer here to the THC content of a cannabis product. The frequently cited limit of 0.3 percent concerns other legal contexts, such as industrial hemp, not driving. In road traffic, what counts is a lab value in the blood or blood serum.
Unit of Measurement: Nanograms per Millilitre of Blood Serum
The THC limit is stated as a concentration: nanograms per millilitre of blood serum. The unit ng/ml describes how much active substance is detectable in one ml of serum; 3.5 ng/ml therefore means 3.5 nanograms of THC per millilitre. The distinction is important: a product with a certain percentage value does not directly indicate which value will later be measured in the blood serum. For road traffic, the figure in ng/ml is the decisive one.
Novice Drivers, Alcohol and Special Rules
In addition to the general limit, special rules apply for novice drivers during their probationary period as well as for people under 21. A stricter standard may already be relevant for them if THC is detected. Combined use is also assessed separately: alcohol and cannabis can have additional legal consequences in road traffic, particularly if both are detected together. For cannabis users this means: the THC limit in Germany is only part of the assessment. Whether a violation exists in an individual case depends on measured values, circumstances and the current legal situation.
What Consequences Threaten If the Limit Is Exceeded?
If the THC limit in Germany is exceeded in road traffic, this can be prosecuted as an administrative offence. Those affected generally have to expect a fine, points in Flensburg and a driving ban. The fine catalogue provides for a fine of 500 euros and a one-month driving ban for a first offence; if decisions are already recorded in the Fitness to Drive Register, the fine and driving ban increase.
Which consequences actually threaten in a specific case depends on several factors. These include the measured THC value, the circumstances of the check, possible signs of impairment at the wheel, and the question of whether alcohol or other substances played a role. Administrative practice and case law can also influence how an offence is assessed. It is therefore important to note: not every situation is treated identically. Anyone checked at the wheel after using cannabis should know that, besides the driving ban, further administrative steps may also be possible, for example by the driving licence authority.
What Applies to CBD Flowers Made from Industrial Hemp?
For CBD flowers, it is not solely decisive that they are intended to have little to no intoxicating effect. What matters is the THC content of cannabis or industrial hemp, because tetrahydrocannabinol is the substance to which many legal assessments are linked. Anyone wanting to know how much THC is allowed should therefore distinguish between general cannabis use and products made from approved industrial hemp.
Several points are important for a reputable classification: the flowers should come from industrial hemp listed in the EU variety catalogue, and the stated THC value must match the applicable regulations. An up-to-date lab certificate is central here, because it documents the measured content of the respective batch. Especially with flowers, values can vary depending on harvest, processing and storage. Details should therefore be checked on a batch-specific basis rather than generally. Ideally, such analysis values are already available in a CBD flower category, so consumers can understand the THC content before buying.
Source Basis and Legal Framework
For the classification of the THC limit in Germany, reliable primary sources should be used first and foremost: the respective applicable law, relevant regulations, official information from federal authorities, as well as resolutions and papers from the Bundestag. Also relevant are the current rules on handling cannabis, including the new requirements that may relate to possession, cultivation, road traffic or industrial hemp.
For questions about THC in plant material or products, the EU variety catalogue and recognised standards of laboratory analysis are also important. They help to understand how values are collected and assessed. This section is not based on studies about possible properties or applications of cannabis products, since it focuses exclusively on the legal and analytical framework.
Conclusion: Understanding the Limit, Checking the Certificate
The THC limit depends on the context: for industrial hemp and CBD flowers, the value of 0.3 percent is mainly relevant, while in road traffic the measurement is in ng/ml of blood serum. Anyone wanting to correctly classify the THC limit in Germany should therefore distinguish between product law and use while driving. In practice, a lab certificate per batch helps to check the THC content of cannabis in a traceable way. For guidance, it is worth looking at the CBD flower category with corresponding analysis details, and anyone who wants to verify the values on real material before their first purchase can request a free cannabis sample.
Note: No Legal or Medical Advice
This article is aimed exclusively at adults aged 18 and over and serves general information purposes. It does not replace either individual legal advice or medical advice, for example regarding use, fitness to drive or health risks. The legal situation, for example whether CBD flowers are legal, may change; the information provided is to the best of our knowledge as of August 2026. For new regulations or specific cases, qualified bodies should be consulted.
