Small residues of this persistent product are now present in many composts, even “organic” ones. I show how to check for their presence by growing bean and pea seedlings. Testing like this is called a bio-assay, and is more effective than laboratory testing, partly because the amounts of active compound are so tiny. Many lab tests show as “negative”, when poison is there and causing damage.
I have 30 years of experience and i started this website to see if i could try and share my knowledge to help you.
With a degree a Horticulture BSc (Hons)
I have worked as a horticulture specialist lead gardener, garden landscaper, and of course i am a hobby gardener at home in my own garden.
Please if you have any questions leave them on the article and i will get back to you personally.