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" When microbes and bacteria go to work on the organic matter, breaking it down into compost and humus, they absorb a certain amount of nitrogen from the soil. Lionel recommends adding a high-nitrogen fertiliser like blood and http://betonnn.net63.net bone with any organic matter, to compensate for this lost nitrogen. "This is especially important if you're hoping to grow exotic plants," he says, "since they require nitrogen to stay healthy. When preparing soil in a garden bed around existing plants, Lionel suggests a more delicate approach. "A couple of times a year, dig the organic matter into the soil at a decent distance so you don't disturb the root zone of the plant, and lay mulch directly around the plant," he says. "Over time it will decompose and be absorbed into the soil."