"Organic fertilizers are soil amendments and other types of fertilizers made without synthetic or harmful chemicals," says Peg Aloi, garden expert at House Digest and owner of Albion Gardens.

Which ones should or shouldn't be used on the types of soils I have ... when used as a nitrogen fertilizer, must be injected under the soil surface. Although water-soluble, ammonium attaches readily ...

When it's time to get your garden in gear or revive a lawn that's a little lackluster, a great fertilizer is a crucial growth ...