It is also legal to sell fresh magic mushrooms

Tory MP for mid-Worcestershire, Peter Luff, says selling the seeds sends out a confusing message.

Mr Luff says the legal sale of seeds is bound to cause some people to think that cannabis use is not against the law.

Recent legislation downgraded cannabis from Class B to Class C, but still left police with the power to arrest users.

Seeds are not for germination - they're sold for novelty value David Clayton-Wright Planet Bong spokesman

Officers should no longer automatically arrest those caught in possession, and users should only be detained in certain aggravating circumstances which include smoking the drug in public or around children.

As well as cannabis seeds, it is also legal for shops to sell magic mushrooms in their natural state although the fungus is defined as a Class A drug if it is prepared in any way.

David Clayton-Wright runs a shop called Planet Bong in Leamington Spa, Warwickshire, which sells fresh magic mushrooms, cannabis seeds and drugs paraphernalia.

He told BBC Midlands Today that their goods are sold for "novelty value" alone.

Mr Luff says the government is in a "complete muddle" over cannabis

"We run a safe sell protocol situation when we sell mushrooms.

"We say to everybody that buys them that they mustn't prepare them in any way - that means freeze them, dry them, boil them or pickle them.

"They must keep them in their fresh state.

"We also tell them that seeds are not for germination - they're sold for novelty value."

Mr Luff said that, despite such warnings, the law as it stands is a "complete muddle" and could cause people to break the law unwittingly.

"I think it would be quite reasonable for someone to walk into a shop, see cannabis seeds on sale legally and assume that they can grow them.

"The government's got to get a grip on this situation very quickly."