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How To Propagate A Bounty Of Basil Indoors Using An Old Jar
By LINDSAY DONALDSON
While basil is often associated with summer, you can grow the herb year-round indoors using an old jar. First, find a branch that doesn't have a seed stalk and isn't a crown.
Trim a sprig that’s 3 to 4 inches long, remove all of the leaves except the first one or two sets, and submerge the bare stem in water in a clear container.
Place the container in a sunny window, and change the water every two to three days. In about two weeks, your stem should have a robust set of roots that’s ready for planting.
Since the cutting relies on water and sun, your water quality can be an issue. The U.S. Center for Disease Control shares that tap water treated with chlorine isn't harmful.
However, if you want to be safe, you can fill a jar with the water and let it stand uncovered for 24 hours. This process allows the chlorine to evaporate from the water.