Calder Permaculture


(R)Here at Calder Permaculture we have established a large scale worm farm using our recipe for the best achievable results.  Our specialized compost is used to feed our worms. Water is than applied , as the moisture percolates down through the worm beds, worm droppings are dissolved in the liquid and microorganisms are also leached out with the fluid.  The fluid is exceptionally high in immediately available plant nutrients as well as microbes. The resulting black liquid contains the maximum amount of nutrients for plants to thrive.  

With such richness and sustenance available to the plants, roots are stimulated and plants produce a large increase in fibrous roots, so much so that the treated plants are then able to withstand extremes of temperature. The increased root area has the effect of increasing the root surface contact with surrounding soil.  These fibrous roots are responsible for the uptake of moisture and nutrition, through a process known as osmosis , thus plants withstand extremes in temperature, heat waves and dry conditions.

Though networking a select group of farmers where asked to field test our product (now named Stimulator) on various crops and soil types. The same results where repeated in all cases. Feed back from growers was extremely positive. They where very impressed with the rapid response , appearance and all round health of the treated plants. 

Over years of farming practices that are detrimental to both earth worms, micro-organisms and fungi we have upset the natural balance of soil. Becoming more and more reliant on chemical inputs to feed our plants and control disease and insect attack. Stimulator replaces micro-organisms. The nutrition contained within the liquid castings is 100% immediately available to plants. 

Because it contains significant amounts of trace elements it helps to unlock some of the chemical nutrition locked up in the soil, the micro-organisms will work further to break down conventional fertilisers and organic matter into forms plants can use. The images below shows the impact Stimulator has on growth and the general well being of plants. The image to the left is an untreated area whereas the image to right show a significant fibrous root development 12 days after application. 

Pumpkins, although normally prone to extremes of heat, in the photos below show how regular application of Stimulator will improve your plant tolerance to heat stress. The first photo below was taken on the 16th January 2019 where the temperature rose to a top of 45.3 degrees at 2.30pm. The photo was taken at 5.30pm where the official temperature (BOM) was recorded at 43.2. The second photo is of the same plants taken on the 24th January and the BOM temp was 46.3 and the photo was taken at 7pm when the temperature had dropped to 42.

STIMULATOR - Working with Mother Nature to help farmers thrive.

Various Analysis of Stimulator Liquid Fertiliser

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Amal Analytical Certificate of Analysis

Report on sample of Luquid Fertiliser by SWEP Laboritories

Stimulator Information

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Organically grown Garlic, Onions and Rockmelons show a marked size improvement.

Garlic Garlic Onion

“It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organized creatures.” 
– Charles Darwin 1881

“Without the work of this humble creature, who knows nothing of the benefits he confers upon mankind, agriculture, as we know it, would be very difficult, if not wholly impossible.”
– Charles Darwin


“Nobody and nothing can be compared with earthworms in their positive influence on the whole living Nature. They create soil and everything that lives in it. They are the most numerous animals on Earth and the main creatures converting all organic matter into soil humus providing soil’s fertility and biosphere’s functions: disinfecting, neutralizing, protective and productive.”
– Anatoly M. Igonin21, Ph. D., Professor at the Vladimir Pedagogical University, Vladimir, Russia, as quoted in Casting Call 9(2), Aug 2004.


“A worm casting (also known as worm cast or vermicast) is a biologically active mound containing thousands of bacteria, enzymes, and remnants of plant materials and animal manures that were not digested by the earthworm. The composting process continues after a worm casting has been deposited. In fact, the bacterial population of a cast is much greater than the bacterial population of either ingested soil, or the earthworm’s gut. An important component of this dark mass if humus. Humus is a complicated material formed during the breakdown of organic matter. One of its components, humic acid, provides many binding sites for plant nutrients, such as calcium, iron, potassium, sulfur and phosphorus. These nutrients are stored in the humic acid molecule in a form readily available to plants, and are released when the plants require them.” 
– Mary Appelhof, Worms Eat My Garbage, 1982, p.68. 


“Earthworm castings are the best imaginable potting soil for greenhouses or houseplants, as well as gardening and farming. It will not burn even the most delicate plants and all nutrients are water-soluble, making it an immediate plant food. Earthworm castings, in addition to their use as a potting soil, can be used as a planting soil for trees, vegetables, shrubs, and flowers. They may be used as a mulch so that the minerals leach directly into the ground when watered. The effects of earthworm castings used in any of these ways are immediately visible. They make plants grow fast and strong. Nematodes and diseases will not ruin gardens or plants if the soil is rich enough for them to grow fast. It is the weak plant in poor soil that is destroyed by nematodes and diseases.”
– R.E. Gaddie and D.E. Douglas, Earthworms For Ecology and Profit, Vol. I “Scientific Earthworm Farming,” 1975, p. 175.