Lead Safe Gardening: Practical Fun Facts
Yes, this article title was chosen with tongue in cheek. (How fun can lead really be?) However, given my haziness around managing an invisible, scentless soil contaminant like lead, finding concrete information about its behavior under different soil conditions has been pretty exciting. Even, well, fun. Let's jump in!
Earth Repair #2: Phytoremediation & Plant Rock Stars
Phytoremediation is the use of plants to remove and/or transform contaminants in the soil. In general, it's appropriate when there are low to medium levels of contamination present.
The relationship between a plant and a contaminant will vary based on the characteristics of the plant, as well as the chemical or heavy metal.
Earth Repair #1: Microremediation of Contaminated Soil & Composting
Microbial remediation utilizes the ability of some bacteria to bind heavy metals in less bioavailable forms, or to break down organic contaminants into more benign substances. (In chemistry, organic means that the substance is carbon-based. This includes many industrial contaminants and agricultural chemicals). Because healthy soil rich in bacteria, fungi, and other organisms is imperative for healthy plant growth, we can't talk about using plants for remediation without starting with bacteria.