Gerber Daisy bugs
Hello. My boss brought in a Gerber Daisy to the office in May. On Monday, I noticed that one leaf appears partially eaten and there are rust spots on the other leaves. Also, I see little red bugs on the plant from time to time. What can I do to help the Gerber Daisy (known as "Susan"). We work in the Rotunda at 711 W. 40th Street. The plant is always indoors, but gets put on the window sill for extra light every day for a few hours.
Would you be able to send us photos of the plant and the insects you are seeing? You can attach up to three photos. (Click on "choose file" below and upload files from your image library.) We would be happy to take a look and determine what is going on.
Per your request, attached are 3 photos of the Gerbera Daisy. Of course, the bugs won't show up for their photo op. They've most likely burrowed into the soil. When I saw them last, I had just taken the plant out of a very sunny spot on the window sill.
We viewed your photos. We cannot say for sure what is going on with the plant but here are some possibilities. If the plant is stressed it may be susceptible to possible insect pests. In the right photo we notice the leaves look shiny and and there may be some insects called aphids on the leaves. They are a sucking insect and excrete a honeydew as they feed (hence the shiny substance). Here is our website on aphids for photos and control information. Look for evidence of this. https://extension.umd.edu/hgic/topics/aphids-houseplants
Also, look for webbing on the foliage evidence of a suckiing insect called spider mites. See here https://extension.umd.edu/hgic/topics/spider-mites-houseplants
The middle photo shows a type of physical damage.
Overall, Gerbera daisy is an annual plant and is not long lived as a houseplant. This annual flower grows best outdoors in morning sun and afternoon shade. Water regularly and allow the soil to dry slightly between waterings. We recommend that you look for the above insects. Take the plant home and provide the proper care including light, watering, and fertilization. You may need to repot or plant in the ground. Here is a link to growing outdoors https://homeguides.sfgate.com/grow-gerbera-daisy-outdoors-48613.html
Also, take the opportunity to consider some low light plants for the office such as pothos, philodendron, Chinese evergreen, etc.