Gerbera daisy seeds (Gerbera jamesonii) are slow to germinate, and sensitive to moisture, sunlight and temperature. They are also tiny, with as many as 8,000 seeds in 1 ounce. The expense and difficulty of growing Gerbera daisies from seed leads many home gardeners to buy seedlings instead of trying to germinate their own seeds. Existing plants will self-sow, requiring nothing other than clear access to the soil below. Planting Gerbera daisy seeds in other conditions requires special handling of the seeds before and after planting. Gerbera daisies grow in USDA Plant Hardiness Zones 8 to 12.
Keep Gerbera daisy seed packages sealed and in the refrigerator until you are ready to plant them. Exposed seeds will be damaged by normal room conditions.
Fill a shallow germination container with potting soil. Moisten the soil without soaking it to prevent rotting the seeds. The container should be at least 2 inches deep.
Look through the seeds and pick out the fattest seeds. Thin Gerbera daisy seeds may not be developed enough to be fertile.
Place the seeds vertically into the soil with the fuzzy end at the top. The very top of the seeds should be barely under the soil. If there is a little fuzz from the seed visible, the seed is likely at the right depth.
Put plastic wrap over the top of the container to hold in the moisture. Place the container in a location that receives sunlight for at least part of the day and maintains a temperature of at least 70 degrees F. Leave the seed container undisturbed for 15 to 20 days.
Watch the germinated seeds for development. Once the seedlings have four leaves on them, take the seedlings out and transplant them into plant pots.
Give each seedling a plant pot that is at least 8 inches in diameter. Fill the pot ¾ full with commercial potting soil. Carefully remove the seedling from the germination container and place it into the new pot.
Hold the seedling in one hand and put potting soil around the seedling with the other, being careful not to crush the roots. The roots should be kept straight and the potting soil built up around the seedling until the soil reaches close to the top of the pot.
Water the Gerbera daisy seedling every few days, allowing some drying in between the waterings. Give it some 14-14-14 fertilizer once a month, starting a month after the daisy was transplanted.