Gerberas, like any other plants, are prone to diseases and pests. One of the most dangerous diseases affecting the gerbera is stunted growth. When affected by this disease, the leaves and buds of the plant remain shrunken in size without blooming. 1 milligram of imidacloprid dissolved in 2 litres of water should be sprayed once every 2 weeks. It is also advised to use sulphur powder against the pests attacks. The powder should be mixed well with the soil and evenly distributed. A soap solution should be sprayed on the plant before the sulphur powder is added. But it is advisable to remove any excess powder from the plant once applied. Special care must be taken to avoid any residue fertilizer (especially chemical) on the leafs as it causes leaf spots and plant damage.
Another serious issue that is affects the gerbera is root decay. This is caused by excessive moisture content in the pot mixture. The only sustainable remedy is to avoid over-irrigation and water-logging. This disease can also be rectified by pouring 5 gram mancozeb mixed in 1 litre water, at the base of the plant. Do not place the plant pots in areas receiving heavy rainfall. Gerbera plant’s immunity can be increased by sprinkling 3-4 furadan particles in the pot mixture. Proper usage of insecticides and pesticides must be done without treating the diseases lightly.