Answer: As general rule of thumb, fertilizer should be applied to the soil around plants just as the plants begin to grow in the spring. Applying fertilizer in early spring provides some time for the nutrients to work their way down to the plant roots with the help of rainfall (or water from the hose). A second application can be made during periods of heavy growth, such as midsummer, if you desire, but it's not absolutely necessary. Once a plant leafs out, it produces its own energy for growth and maintenance through a process called photosynthesis. You can feed more than once a year, but it's possible to over-fertilize, which would be detrimental to plant health. To be on the safe side, read the label and apply in amounts and with the frequency recommended on the brand of fertilizer you purchase.
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