Planting and Care https://docsbay.net/gerberas-at-a-glance1
Gerberas grow best in well-drained, sandy soils amended with organic matter. One to two inches of peat, compost or other organic material can be incorporated into the soil before planting. Excessive moisture during the rainy season may increase the incidence of root disease. Where drainage is a problem, grow gerberas in raised beds, mounds or containers.
Water the plants well before you remove them from the pot. Gently remove the plant from the pot and examine the roots. Carefully untangle them and loosen the root ball if they appear “pot bound.”
Space the plants 12 to 18 inches apart, being careful to plant the crown at or slightly above soil level. The crown should be visible after watering. While gerberas like regular moisture, the crown should be allowed to dry out between irrigations. Mulch with 1 to 2 inches of organic material,
taking care, once again, not to bury or crowd the crown.
Gerbera crowns gradually sink into the soil after a period of growth. The crown becomes entirely submerged after a year or two, and excess moisture at this time often induces crown rot, causing the plant to die. To prevent crown rot dig, lift and replant the gerbera every two years.
Gerberas respond to high fertility levels and should be fertilized regularly. Apply a controlled-release fertilizer 2–3 times during the growing season or use a complete fertilizer once a month. Select a fertilizer that contains iron or manganese because gerberas are prone to deficiencies of these micronutrients. You can also correct these problems with foliar sprays of products containing micronutrients.
Gerberas can be grown in full sun but perform better with morning sun and afternoon shade. Remove spent blooms and old leaves regularly to avoid disease.