Questions tagged [aphids]

Destructive insect pest, super-family aphioidea.

Aphids are members of the superfamily aphidoidea of insects. They are commonly known as greenflies, plant lice, blackflies, and whiteflies; but should not be confused with "jumping plant lice" or "true whiteflies".

Aphids have a reputation as one of the most destructive plant , although zoologically they could be considered a very successful group of insects. Of the roughly 4400 species known, about 250 are considered serious pests in agriculture, forestry, and horticulture.

Many aphids have complex reproductive cycles, including some which can be asexual under certain (resource boom) conditions. These adaptions can result in fast population growth under the right conditions, making an aphid infestation particularly destructive in a short period of time.

Aphids typically feed on a plant's sap although their damage can extend to growing buds. Typical plant damage include decreased growth rates, yellowing, stunted growth, curled , wilt, and death. Aphids can also transmit viruses between plants.

Natural enemies include predatory ladybirds (), hoverfly larvae, parasitic , and lacewings. Many sustainable farming methods attempt to encourage these predators.

Use this tag for questions about aphids - typically these will be identification and eradication questions.

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Do aphids return to the host plant after being sprayed off?

What happens to aphids after you spray them off a plant? Do they wander around until they find a new host, get rescued by ants, die, or something else? Am I just moving them from one plant to another by spraying them off?
Steve HHH
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How do I get rid of worm-like trails all over my Senetti plants' leaves?

I have had a Senetti (more info) for about 18 months, and last year it was attacked by aphids. Initially the leaves had a worm like discolouration, as if something was attacking or eating them. Are the two things linked? Some soapy water and some…
Egwor
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Does winter wash stain brickwork

I have a healthy Jasmine that is trained against a brick wall. It covers a width of some 3m and reaches to 2.5m tall. It has suddenly been afflicted by a large aphid infestation, so I was planning to use a winter wash to kill the eggs over the…
Chenmunka
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Why do my Roma tomatoes look like this?

I basically just planted this plant and let it grow all summer more or less untended. It's become extremely viney, and has a ton of aphids. We live in a very dry area, near Sacramento, and I'm curious what might be the cause of some if not most of…
user11585
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Aphids on my houseplants

I think I have black bugs on my plant since last year and I worked on it for months and then I thought I killed it. I used soapy water and when it did not work I used pesticide. It almost killed my plant but somehow I recovered it. This year, they…
Eva
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Bugs on mint leaves

We have small, dark brown bugs on the underside of our mint plant (in a window box on our balcony). I noticed today these bugs on the underside of our leaves. Could someone please help identify what these are, and how we could prevent them?
anotherdave
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Pomegranate aphids or something else

I bought this pomegranate plant a few days back. Plant was healthy but now I see this tiny white things on the plant, these could be aphids I am not sure. I have adde some snaps, can someone confirm this. I have sprayed the plant with soap solution…
saleem
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Are these insect eggs on the bonsai?

We bought a bonsai tree in Houston, TX and we spotted something on the branches. What is it? Should we remove them? As suggested I've taken more pictures and investigated further. I removed more: I cut one open: I decided to look at the…
wally
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How should I treat a badly aphid infested shedding Hoya?

I have just been given a very badly aphid infested Hoya lanceolata ssp. bella plant. I was also given another wax plant too, though I am not sure of its name; could it be a Hoya australis. It looks like it is shedding. I live in Rochester, New York…
Nee_R
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What are these bugs in my tomato plants containers and how can I save them?

Recently transplanted 6 plants outdoors into fabric containers with potting soil from Lowes. Within a few days, these were jumping around the dirt. They just look like tiny little beads to the naked eye. Is there any chance of saving these plants?…
John M.
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Why aren't my year-old apple seedlings thriving?

I planted a variety of seeds from apples from a local orchard. They have been growing for almost a year. They are about 8" and have suffered aphids and a white powdery fungus. I have sprayed plants for both, however I can't seem to get them to come…
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Please help me identify these white spots/area on my kale leaves

Please help me identify these white spots/area on my kale leaves and please use the zoom button to zoom in. The photos are high resolution. My wife doesn't like these white spots which are exclusively on the back of the leaves. So, she ends up…
user674669
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Need help determining houseplant's problem

I've had a houseplant (not sure of the species, unfortunately) for a few (~6) months now. Until recently, the plant has been healthy. Now, there are a few things going on with the plant that are concerning to me. I'm rather new to gardening, so I'm…
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Baby apple tree under attack by...aphids? What to do?

I have a little backyard nursery which includes a few young grafted apple trees. Today I saw a bunch of ants gathering around the top of one of the baby apple trees, and green nodes seeming to pop out of the stem. At first I thought these might be…
cr0
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Best method of using lady bugs to prevent aphids

My kale and broccoli's are getting infested with aphids and they seem to be multiplying. I have tried to hose them off and that works temporarily but they are back in a few days. Research suggests using lady bugs is very effective. If someone has…
JStorage
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