Fertilizing in dormant or non-growing seasons is not to be avoided.

• A. False
• B. True
• C. Not applicable
• D. Only in warm climates

Answer: (A)

During dormancy plants aren’t actively growing or taking up nutrients, so applying fertilizer at that time doesn’t help and can even cause problems. The roots are less active and soil conditions—cool temperatures and slower moisture movement—mean nutrients aren’t efficiently absorbed. Salt from fertilizer can accumulate in the root zone, potentially harming roots, and nutrients can be leached away by winter rainfall or irrigation, wasting product and risking runoff. Because fertilizer is most effective when the plant is actively growing, fertilizing during dormant or non-growing seasons is generally not advisable. The usual best practice is to fertilize during periods of active growth (or according to soil test recommendations) and avoid late-season applications for most ornamentals and turf. Exceptions exist only if a soil test shows a need or in climates where dormancy is minimal; otherwise, hold off on fertilizer until growth resumes.