A: The ant you brought into the office is called a crazy ant, Paratrechina longicornis, occurs in large numbers in homes or outdoors. They often forage long distances away from their nests, so nests are often difficult to… Read More
Category: Pests & Disease
Q: I have these small, black insects all over the buds of my hibiscus plant. What are they and how do I control them?
A: Identifying the insects was easy since you brought a clipping of one of the buds into the Nassau County Extension Yulee satellite office plant clinic. The insects are aphids, which are small pear-shaped creatures that pierce into… Read More
Q: What is causing the new leaves on my ficus plants to fold in half? I have been told they are thrips.
A: After talking to you about bringing a sample in a sealed plastic bag to the office, I was able to determine they were most likely weeping fig thrips, Gynaikohrps uzeli. Since the plants at your nursery were… Read More
A: Your plums are showing the early stages of brown rot, which is caused by a fungus called Monilina fructicola. Brown rot can attack blooms, fruit, leaves, and stems. It over-winters on blighted stems and mummified fruit. Brown… Read More
Q: I believe we have two pineapple guavas by our front door and one is losing its leaves dramatically. There is a “beige colored” hard cocoon about 1.5“on a branch. Also, this bush was bothered by the large… Read More
Q: What is wrong with my persimmon? Many of the leaves have browning around the edges. After talking to you, I went out and removed some of the stems and found a dark, discolored ring you suspected I… Read More
A: This disease is appropriately called “Black Leaf Spot.” It is caused by a fungus, which can be especially troublesome during wet weather. Since we are currently experiencing drought conditions you might ask how such a disease can… Read More
A: I believe they are mealy bugs which are soft-bodied insects with a piercing-sucking mouthpart. They produce a covering of clumps of white, waxy threads. A by-product of mealy bug feeding is sticky honeydew which coats infested foliage… Read More
Q: I have these small white specks on the back of my magnolia leaves. Can you tell me what they are and will they harm my magnolia?
A: At first I thought it might be some sort of tea scale but a closer look made me realize it was the pupa stage of some insect. I knew we probably needed to be concerned because there… Read More
Q: I have a sago palm that is covered with insects. The fronds actually look as though they are covered with snow. What insect is this?
A: The insect may be a scale insect called the cycad aulacaspis scale, Aulacaspis yasumatsui. It apparently originated from Thailand but it is kept in check overseas by local parasitoids. Of course, here in the U.S. this scale… Read More