How often do you use compost fertilizer on a potted plant?

Twice a year is the frequency with which compost fertilizer is used on potted plants. Dark-colored, fresh-smelling, nutrient-rich organic matter called compost or humus may be applied at the beginning of a plant's growing season and at the end. That tends to translate into a sprinkling of compost, at a ratio of no more than 0.25 or 0.50 to 1 of fertilizer to potting mix, in early spring and in early to late fall, depending upon the potted plant.