organic manure?

HI all im wondering if anyone knows anything about planting seeds that you leeve to grow then dig in as a mulch i think at a later date  could be organi manure im not sure but any info will be interesting and sounds good in new raised beds

Hopefully Alan4711  

It is called green manure alan-there is loads of information on the web to look at-others no doubt will chip in with their experiences

A gardeners world clip on the subject-quite informative

http://www.bbc.co.uk/programmes/p009sy6s

Magic many thanks sotojust the job

Good luck

Alan