Copper Azole Treated Wood Vegetable Garden

Some see no serious risk for humans in using them in a vegetable garden the amount of copper released being minimal and copper being considered essentially nontoxic unless present at extremely high levels.

Copper azole treated wood vegetable garden.

In a 2014 study wood research scientists love gardner and morrell at oregon state university found that in growing radishes carrots and potatoes in a copper azole treated douglas fir planter the copper levels were not higher in roots or tubers of radishes carrots or potatoes compared to beds constructed from untreated wood. Type a contains copper boric acid and tebuconazole while type b only contains copper and tebuconazole. It is widely used throughout the united states and canada. The copper works to deter insects while the.

Ca is a water based preservative that can be cleaned and painted. Alkaline copper quaternary or aca. Copper azole and alkaline copper quaternary contain fungicide and copper but not arsenic. Soil experts disagree on using copper treated wood products in a vegetable garden.

Here s what i know. Copper azole ca. And micronized copper quaternary or mcq. In a 2014 study wood research scientists love gardner and morrell at oregon state university found that in growing radishes carrots and potatoes in a copper azole treated douglas fir planter the copper levels were not higher in roots or tubers of radishes carrots or potatoes compared to beds constructed from untreated wood.

Copper azole treatments contain copper boric acid and tebuconazole type b does not contain boric acid. Sally brown a research assistant professor of soils at the university of washington knows her way around both food and metals. Studies have shown that arsenic from wood treated with cca leaches into the soil and that copper although much less toxic leaches from acq and copper boron azole cba a variant of ca b. In 2013 most pressure treated wood used copper based compounds including copper azole or ca.

Raised vegetable bed with treated wood. It is a fungicide and insecticide. Lamiot wikimedia commons pressured treated. Can pressure treated wood be used as part of an organic vegetable garden.

Wood that isn t pressure treated tends to rot fairly quickly in contact with the soil. Manufacturers of pressure treated wood with micronized copper quaternary claim that their lumber won t leach any copper into the soil and therefore it s safe for all uses including making garden beds. Copper azole is a water based wood preservative that prevents fungal decay and insect attack.