"It is important to understand that biodynamics is a way of gardening or farming. It is not a religion, or a faith, but a proven way of getting higher yields of high quality crops. There is evidence that it works and I suggest the curious look at “The Biodynamic Sowing and Planting Calendar 2009 by Maria Thun and Matthias K. Thun where they will find evidence of ongoing trials. This is the best moon planting calendar and includes details of planting trials. Please note: moon planting is based on ASTRONOMY and NOT astrology as some critics suggest.
I have used the above moon planting calendar for many years. I can’t prove whether it works or not in the ’scientific’ sense because I have never done any double blind trials. What I can say is that people have remarked on the quality, size and yields of the crops from the garden even in difficult years. You may dismiss moon planting as a joke, an engineer friend did just that some years back. My response was to ask him about the energy needs of the world and suggest that if we could harness the power of tides that move enormous amounts of water around the world twice a day then we could satisfy the world’s energy needs many times over. If you consider the forces needed to create tides, it easier to accept that such huge gravitational forces have an effect on living organisms.
Update 08 Feb 2009. There is an article in the 07 Feb 20009 edition of New Scientists magazine which says that researchers have linked the gravitational pull of the sun and moon to earthquakes.
“Besides causing ocean tides the sun and the moon also pull at the Earth’s crust and upper mantle, resulting in “Earth tides”. At its strongest, this pull can ease enough of the pressure on the tectonic plates for them to slip against each other.”
Although the article says the effect is small in terms of the power needed to create earthquakes, it is a factor and once again shows just how strong the pull of the sun, moon and planets can be. This if further evidence to suggest that these huge forces could well have an effect on plant growth; in fact it would be surprising if they did not!
Further reading
Bockemuhl, Joachim, In Partnership with Nature. Anthroposophic, USA.-, Extraordinary Plant Qualities for Biodynamics, Floris.
Cloos, Walther, The Living Earth, Lanthorn.
Colquhoun, Margaret and Axel Ewald, New Eyes for Plants, Hawthorn.
Conford, Philip, The Origins of the Organic Movement, Floris.
Grotzke, Heinz, Biodynamic Greenhouse Management, Biodynamic Literature, USA.
Klett, Manfred, Principles of Biodynamic Spray and Compost Preparations, Floris.
Koepf, H.H. The Biodynamic Farm. Anthroposophic, USA.-, Research in Biodynamic Agriculture, Biodynamic Farming & Gardening Ass. USA.
Kranich, Ernst Michael, Planetary Influences upon Plants, Biodynamic Literature, USA.
Moore, Hilmar, Rudolf Steiner’s Contribution to the History and Practice of AgriculturalEducation, Biodynamic Literature, USA.
Eileen over at her blog 
As people have began to realize environmental problems and global warming better, they have changed their negative thinking towards the environment into something which can be beneficial for the environment and for them. One such process that people have adopted to reduce environmental devastation is green gardening practices. For numerous humans, gardening is an important part of their lives either for making a living out of the crops or just for leisure purpose. Nowadays, as people have started to make their move towards sustainability and green living, organic gardening has become very famous. Before, humans had to rely on Northern Kentucky pest control and Cincinnati pest control for their herbicide needs and to keep their backyard free from insects. Additionally, with green gardening, people can be certain they can take care of the insects and infestation with natural methods.