Dosieren, Konsumieren, Fahren – was ist erlaubt?

Dosage, consumption, driving – what is allowed?

October 21, 2025Till Kasch
Cannabis rules 2025: Consumption, possession & driving

Cannabis rules 2025: Consumption, possession & driving

What the cannabis law means in everyday life – with a focus on edibles, public consumption and driving.

Introduction: Between freedom of enjoyment and law

With the legalization of cannabis in Germany, many things have become easier – but not everything is clear. There is still a lot of uncertainty, especially regarding dosage , consumption in public , and driving after consumption . Here you can find out what you are generally allowed to do according to current legislation, what remains prohibited, and where caution is advised.

Important: This article is an easy-to-understand summary of practical experience and does not replace legal advice. Rules and administrative practices are subject to change.

1. Possession & Dosage – How much is allowed?

The following basic rules are particularly relevant in everyday life:

  • You are allowed to possess up to 25g of cannabis in public.
  • Up to 50g may be kept at home.
  • You are allowed to grow up to 3 female plants privately.

These amounts refer to dried flowers . Once cannabis is processed into a food or concentrate , the THC content , not the weight, is what matters for risk and effect.

Practice (Safer Use):
With edibles, it's the mg of THC that matters, not "a piece". Many recreational servings tend to contain around 5–10 mg of THC . Beginners start at a significantly lower level and wait long enough.

2. Consumption – where am I even allowed to do that?

Even though cannabis is legal, you are not allowed to consume it everywhere .

Typical no-go zones (examples)

  • Near schools, daycare centers, playgrounds (observe social distancing rules)
  • In pedestrian zones at certain times (observe local/legal rules)
  • In the presence of minors
  • In enclosed spaces of public institutions

Consumption is typically possible at home or on private property – provided that no minors are present and no public nuisance is caused.

Key point: Legal doesn't mean "okay everywhere". Youth protection and restricted zones are the main levers in everyday life.

3. Driving – the toughest limit remains

Driving remains the biggest legal risk factor associated with cannabis use. The decisive factor is the THC level in the blood serum – and this can be relevant even if you feel "fit".

Current limit value (general):
Anyone driving with a THC level of 3.5 ng/ml or higher typically risks sanctions (fine/driving ban/points).
Mixed consumption (cannabis + alcohol) is judged much more strictly.
New drivers / under 21:
Stricter rules apply here – practically speaking, it amounts to 0.0 / “nothing in the blood” (the analytical limit remains relevant).

Why edibles are particularly treacherous

  • Later onset of effect (often 30–120 minutes)
  • Longer duration of effect and therefore a longer risk of still having measurable values.

4. How long is THC detectable?

This depends heavily on the type of consumption, dose, and frequency . Important: "no longer high" does not automatically mean "legally safe".

Consumption style Onset of effect Notice
Joint/Vape 1–10 min The effect is faster, but the values ​​can still remain relevant for longer.
Edible 30–120 min Long-lasting effect, longer risk of still measurable values.
Regular consumption – THC breakdown can take significantly longer.

THC is stored in fatty tissue and can remain in the body for longer depending on the consumption pattern.

5. Public Consumption & Fines

Anyone consuming cannabis in prohibited zones risks a fine. The amount and application of the fine vary depending on the state and situation. Even with legal possession limits, cannabis can be confiscated if you violate consumption regulations.

6. Work & Responsibility

Cannabis use remains a sensitive issue in the workplace. Employers are permitted to impose strict rules for safety-critical tasks (e.g., operating machinery, vehicles, or providing care). Those who work under the influence risk a warning or dismissal – legal does not automatically mean neutral under labor law.

7. Conclusion: Legal does not mean unlimited

  • Owning and growing your own food: possible within the rules.
  • Public consumption: clearly restricted (restricted zones/times/youth protection).
  • Driving remains the biggest risk – especially after consuming edibles.
Edibles, in particular, require special care because their effects are delayed and last longer . Responsibility here is not about moralizing – it's about self-protection.

Frequently Asked Questions (FAQ)

How much THC can I consume without experiencing problems?

There is no fixed "legally safe" THC level. The situation becomes particularly critical with regard to driving, youth protection laws, and prohibited consumption locations. As a safer-use guideline, many recreational doses are around 5–10 mg of THC, while beginners start with significantly lower amounts.

How long after eating an edible can I drive again?

Conservative: drive long enough to ensure you're no longer under the influence – and even then, your blood alcohol level might still be relevant. Edibles have a long-lasting effect, and the limit is strict. When in doubt: don't drive.

Am I allowed to eat edibles in public, e.g. in the park?

Restricted zones, youth protection laws, and local/legal regulations are crucial. Public consumption is not automatically permitted everywhere.

Does driving a car the next morning still count as driving under the influence?

Yes, that can be relevant. Especially after edibles or regular consumption, levels can remain measurable for longer – even if you feel sober.


Note: This article is for informational purposes only and does not constitute legal advice. Laws and administrative practices are subject to change; if in doubt, consult a lawyer or the relevant authorities.

© 2025 Max Buechse | Science · Cuisine · Cannabis

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