Iron (Present as Ferrous Sulfate Monohydrate and
2019-2-28 · watered-in in the spring and fall, when moss is actively growing. Ferrous sulfate can be applied several times per year using a backpack sprayer or granule applicator, and three to four weeks must be allowed before turf and lawns can be re-treated with ferrous sulfate. In Canada, ferrous sulfate is also registered as a …
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