HH-2 combined with the HH-3 Add On

The HH-2 Horticultural System (HH-2) is slowly gaining recognition as the most highly effective solution to many modern day agricultural and waste problems. There is an urgency to address worldwide food shortages, emigration due to lack of income, waste issues and how to fertilise against pests and disease and reduce chemical residues in food. HH-2 has the potential to be a “game changing” technology as it solves all these problems in one but financial resources are required to bring this methodology into widespread use.

Problem One

Current systems of agriculture and horticulture plough or dig over the soil, thereby losing valuable moisture and carbon, which is consequently depleting the soil at an alarming rate (Soil erosion). The world is losing 24 billion tons of topsoil every year because this action disconnects the soil form its  natural formation of layers and so much subsequent tilling is required to reconnect the soil so the seed planted will grow. Ploughing causes depletion of the organic life in the soil which in turn increases the requirement for ever more chemical fertilisers and pesticides to make it possible to grow a crop and keep off the pests and diseases which attack because the soil is unhealthy. This deep ploughing  often brings up the shale layer below forming a soil that is more like concrete than soil.

Ploughing and excessive cultivation throws up clouds of dust that blow away in the wind. This is man made soil erosion.  Besides the need of excessive cultivation to attain a seedbed valuable moisture and carbon are lost and the need for irrigation is increased. In Africa, for example, this is depleting the subterranean water aquifers from where both drinking water and irrigation water is acquired.


Problem Two

Africa and India and other developing regions dump human waste and other garbage into the ground in such a way that causes pollution by the contamination of water courses, and the breeding of rats and flies. Together these cause the largest loss of life in the world (WHO).



One Solution to Two Problems

With over 20 years of research Good Gardeners International have perfected their HH-2 Horticultural and Waste Management System as a localised solution of source separating garbage in schools, hospitals, towns, villages and refugee camps etc., and by processing the organic fraction (often 70%) into a unique soil conditioner/fertiliser, known as HH-4, in only 90 days. This low cost technology is easily operated by the people themselves after they have been trained by the Good Gardeners staff.  The end product, HH-4, is an optimum fertiliser and soil conditioner in one.  From these waste streams income is generated by producing fertiliser  at such a fast rate and is one of the surest ways to help bring economic revival to any community and help stop the need for emigration.

Conclusively The HH-2 Waste Management and Horticultural system will:

  • Eliminate water pollution, rats and flies and rubbish piles
  • Produce an optimum fertiliser to grow pest and disease free crops
  • Dramatically improve the nutritional content of food produced
  • Help educate users in simple ecological waste management and good practice agriculture
  • Create micro businesses with income generating activities
  • Reduce malnutrition and the spread of Malaria
  • Turn human and other sanitation wastes into a valuable soil preserver and rejuvenator – within 90 days


How HH-2 works  (agricultural scale up is HH-1)

The “secret” of the HH-2 system lies in the culture of the initial specific fungi and the subsequent bacteria that by thermophilic reaction make a potent fertiliser/soil “conditioner” from the measured inputs of waste products.

With the balanced inputs the insulated HH-2  units maintain the correct moisture balance that ensures an optimum heat curve in the first 14 days of the process.  The construction of the flat pack design has incorporated insulation to enable the right fungi and bacteria to grow and develop in the required time frame and facilitate the required (automatic) heat curve. Thus all pathogens are destroyed within the system. The easy to read Operators Manual means that chosen staff can easily learn how to operate the system. We are translating this manual into various languages.

This is all achieved with the use of the HH-2 “Hot Boxes” which can be filled with all manner of organic wastes including:

  • Farm waste, crop waste, biomass, weeds
  • Household waste, sweepings  and drain clearance
  • Cooked and uncooked food waste                                                                
  • Food processing waste
  • Animal waste, cow dung etc.,
  • All types of sanitation waste, including female sanitation waste, from the HH-3 DRY toilet system

Donate to your project


Additional locally sourced “essential ingredients” are then added to the mix to start the unique cultures growing. With or without the HH-3, DRY sanitation input, the result is HH-4, the most micro-organically active substance on Earth, with supremely effective moisture and carbon sequestration properties making it an essential tool to combat climate change.

No harmful pathogens have ever been found in HH-4

 These specially insulated Hot Boxes are designed with aeration vents, no moving parts or electrical hook up and can be operated by selected local staff after training. The remarkable end product, HH-4, is produced in only 90 days. On extensive analysis no harmful pathogens have ever been found on any site or installation. The system was also tested at Waltham Pet Centre in the UK in 2003 where 100 dog wastes were collected daily and disposed of in the standard dog waste bags. All were disappeared in 14 days and no pathogens were found at 30 days. Also separate testing for Toxocara Parasite was conducted and the results were negative.


The HH-2 system is a scientifically safe remediation system for all kinds of obnoxious wastes. Even the Cholera bacterium, vibrio cholerae, is destroyed  in the system.   https://en.wikipedia.org/wiki/Vibrio_cholerae


The HH- 2 System can include the HH-3 unit(s) as an add on 

Richard, who is co chair of working group 5 with SuSanA (The Sustainable Sanitation Alliance, Sanitation to Agriculture) has also designed and developed the HH-3 DRY Toilet that requires no water for flushing and works in conjunction with HH-2. This toilet has some additional remarkable properties…

The HH-3 DRY Toilet collects fecal matter through an ordinary looking toilet though inside are removable units. In either system described below female sanitary waste can also be disposed of in this revolutionary toilet.  This avoids separate collections which have been found to get tipped out by boys in schools across Africa. This has resulted in a large number of girls not attending school during their monthly period (SusanA online conference) This constitutes a huge educational set back for Africa. The HH-3 toilet solves this problem.  In over 20 years of research it has been found that once the bio liners have been transferred to the HH-2 units all contents of the toilet are found to have disappeared in the first 14 days of the process. Even in the UK this has been exhibited on Permaculture courses.    This could not fail to attract the attention of Columbia University, who are most interested in this aspect of our research.

Biodegradable liners are fitted inside the toilet units which cleverly filter excess liquid in a gravity fed collection system for recycling the black water into the HH-2 units.   Weekly collections of the internal units are made and they are replaced with a quick single action and a a replacement unit is installed with a bio liner included.  This offers the remarkable feature that this is the toilet that never needs flushing, (globally this would save billions of gallons of water)  rather the effluent is covered with a scoop of HH-4.  Thus there is no smell or unsightliness at any stage of the operation and maximum amounts of water are saved. It is mostly drinking quality water that is flushed down toilets and in the East used for cleaning foot plate systems. There is no such waste of water with the HH-3 toilet.  When HH-3 DRY Toilets are fitted into individual homes in the tropics or sub tropics one pair of HH-2 hot boxes, strategically placed, will have the capacity to continually handle and sanitise the waste from up to 24 houses, a considerably large area with huge savings on valuable drinking water. The operation of this system is income generating and self-sustaining. Thus the ancient methods of reclaiming the full range of nutrients from all kinds of wastes are re-introduced with the Good Gardeners technology which facilitates the No Dig  HH-2 Horticultural System

By recycling organic wastes harmlessly back into the soil more carbon is sequestered than is held by trees and in the atmosphere.  You can donate one to your project here

 NO  Nitrous Oxide

is released into the atmoshphere with the HH-2 system. Nitrous oxide is 300 more times more damaging to the atmosphere than CO2 and is often released in anaerobic systems. BBC World Service

NO  Methane

is released into the atmoshere from the HH-2 System 

We add charcoal into our product HH-4  but charcoal alone has been found to be detrimental to plant growth when supplied raw to soil. By adding charcoal at the right stage of the operation charcoal becomes BIOCHAR.  BIOCHAR holds onto to nutrients in the HH-2 processing system and can preserve the effects of improved fertility for hundreds of years. 

You can see the astounding effects of soil rejuvenation with BIOCHAR on this Horizon film about the Amazon Jungle with many other ENVIRO films on our other web site Suststainable Agriculture London  At 49.15 minutes see the remarkable similarity to HH-4

if no earthworms are present in your soil you have infertile soil. We can introduce these to kick start fertility in any soil type

This HH-4 material facilitates the macro element, namely earthworms. These lowly creatures are ignored in modern day agricultural and horticultural systems and this is unfortunate as they produce 5x more Nitrogen, 7x more Phosphorus and 11x more Potassium in their castings than is found in surrounding soil (Balfour).

This system is more reliable and sidesteps the need for vermicomposting as it produces millions of worms in your soil which is where they naturally live and generate themselves in vast quantities if they are fed properly with the Carbon to Nitrogen ratio of 10:1 as is the ratio derived in HH-4.

Fertile land will hold up to 16 million earthworms per acre (Howard, Darwin).


So potent is this HH-4 “fertiliser/soil conditioner” that the need for yearly ploughing ceases. The natural soil profile is restored, compaction is avoided, rainfall is captured and absorbed, natural drainage is managed by the earthworms and carbon is continually sequestered. This together with revised surface water management, also taught by the Good Gardeners, will reverse and greatly help in mitigating the effects of climate change.             (more carbon is lost to the atmosphere by ploughing, the world over, than through any other source, BBC world-service)

HH-9  BioChar burner to sequester Carbon 

at this stage worms come into the system from the ground and start to proliferate voluminously

Any school or community can grow abundant fruits and vegetables and will thus increase their potential for a more Vegan/Vegetarian  lifestyle which decreases the burden on the planet of intensive meat production. Increased nutrition in the diet is the result.  With a much increased standard of nutrition, than conventionally grown food has to offer, whole communities will be able to improve their cognitive development which will in turn reduce the incidence of mental and physical health problems (IBCHN., London)

This all starts with the cessation of ploughing or digging the soil over and by improving the microbial fauna and flora in the soil. The health of  plants grown in this improved soil will dramatically affect both the health of animals and man that consume the crops grown this way.  The children and staff in each of our schools or villages where we can install this project will have increased health benefits. The Nutritional quality of their diet will change and thus the children’s full capacity for development will be realised. Plus they will be learning the most important skill of how to produce their own healthy food and prevent their sanitation from polluting their environment and drinking water.

Each project set up by the Good Gardeners will be a potential teaching centre for other neighbouring communities Schools and villages to visit.

Please write to us for prices for  equipment or request a budget for your project including your location. Whether it be in the West or in the East the Good Gardeners can tailor make an environmental restoration package for you.




ALSO how the HH-2 equipment easily recycles coffee cups and makes them into something useful – fertiliser – looking at U TUBE (coffee cups can’t be recycled) the world doesn’t seem to know this is possible….and there are mountains of unrecycled coffee cups.                                  HH-2 breaks down the polyethelene in coffee cups in just two weeks!