Unlike the hardy Shasta daisies, Gerbera is a tender annual plant. Although they only last a season, the bright and cheerful Gerber daisy flowers are worth the attention; with up to 6 weeks of blooming time, they make a nice centerpiece or tabletop plant.
Caring for Potted Gerbera Daisies
Water frequently while they're flowering. This is when they require the most water. Gerbers are generally purchased with flowers, and can flower for several weeks at a time as long as they're cared for properly. When they're not flowering they require less water.
Snip off dead flower heads to encourage new growth. Use sharp scissors and snip the stalk just under the foliage line.
Fertilize every 2 weeks with a water-soluble fertilizer that's high in phosphorous. The center number on the fertilizer's formula should be the highest. Schultz Bloom Plus, for example, is a 10-54-10 formula. The numbers mean that the blend is 10% nitrogen, 10% phosphorous and 10% potassium. The remaining percentage is other ingredients.
Keep them in a sunny area that stays between 45 and 70 degrees. When they get too warm, they end up wilting and won't flower. If it's too cold, they die.
Avoid using cleaning or leaf-shining products because there's a small, fuzzy layer on the leaves that protects them from damage.