Pictures are attached, I would like to get rid of it.
That looks like a bad mealybug infestation. They are quite difficult to rid. The ants are feeding from the excretions of, both, the tree and the insects.
I would recommend removing as much of the cottony masses, by hand, as possible. After, you can take a q-tip and swab some alcohol on the remaining spots, and where they were attached previously.
Then you can spray with an insecticide to remove any eggs, or stragglers that have not attached yet.
These articles will help: https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm
https://www.gardeningknowhow.com/edible/fruits/lime/problems-lime-trees.htm
https://www.gardeningknowhow.com/edible/fruits/lime/lime-tree-tips-care-of-lime-trees.htm
What is the tree lacking? Is it magnesium? Thanks Nell
Unfortunately, this subject is not straightforward. This has many causes, and you will have to rule them out, one by one.
This article will help you to get started on figuring out, exactly, which environmental stress(es) that your tree is experiencing:
https://www.gardeningknowhow.com/edible/fruits/lime/dry-lime-fruit-what-causes-dry-limes.htm
Foot tall lime tree originally shipped w/2 marble sized limes last summer, is not growing. In trying to motivate it, tried transplanting just now & the roots are almost non existent (over watered?), but even though there are 2 new limes coming on, the “tree” itself is not growing.
I don't recommend sizing up to that large of a pot this early. This will make it very likely to be overwatered in the near future. It would not be a good idea to dig it back up at this point, but until the root zone fills out the entire container it will be necessary to carefully monitor the watering situation.
Make sure that the container allows water to leave the bottom. Also make sure to allow the soil to dry out, thoroughly, down to about 3 or 4 inches between waterings.
As far as slow growth goes- You will need to apply a citrus fertilizer according, to packaging instructions, for proper growth.
DOLOMITIC LIME and IRON SULFATE will be an appropriate treatment, once or twice per year, to keep infections at bay.
Here is an article that will help you with the care of lime in container: https://www.gardeningknowhow.com/edible/fruits/lime/potted-lime-trees.htm
A couple of years ago, we planted a young lime tree in our garden that gave us quite a few limes. We live in New Orleans, and the next winter we had a very unusual and unexpected temperature drop. The lime tree did not make it. However, several small trunks began to grow from the stump. We now have multiple trunks, see picture. Two or three come up from the ground, and the rest seem to be coming from the trunk. My question is, do we keep all of these trunks? We are total beginners, so any and all advice is welcome.
Most citrus are grafted onto a different rootstock. What is growing now it likely not even a lime. Usually the grafted rootstock is called Flying Dragon, and is an orange type.
Should you choose to keep the suckers, be expecting them to fruit with something completely different than you planted.
We moved to a property with a well established lime tree. The fruit are very juicy, thin skinned and very bountiful. The fruit quickly turn yellow & we pick them but they just don't have any real taste. They're like a very, very, very watered down lemon barley drink. Like if you had finished your lemon barley water and it was just ice melting in the bottom and you drank the melted ice water. This is what our limes taste like.
Many times, this can be attributed to a lack of Sulfur in the soil.
Soil tests can confirm.
These articles will help:
https://www.gardeningknowhow.com/edible/fruits/lime/lime-tree-tips-care-of-lime-trees.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
My tree has good green leaves, good amount of flowers; when they open they fall off. I do give it fertilizer and water; it is in a large pot in the house for winter and in spring outside. Never in the time I had it did it give me any limes. I treat it like a baby help please.
Here's an article that should help:
The plants came from a well known nursery with good reviews. They are graphs and had no problems when I bought them in early March.
It looks like your citrus has scale insects. This will completely destroy your citrus without treatment. First you will have to scrape off all of those white spots, as they is a hard protective shell for the insect. Once they attach, they do not move for the remainder of their lives.
After you have scraped as many off as you can, you will need to treat the tree with a broad spectrum miticide.
It will kill young scale, and it will kill eggs; it cannot penetrate the shell.
Spray this on the tree every 2 or 3 days, all over. Eventually, you will see them shrivel and die, what remains. Do this for 2 weeks, and you will start to see recovery and new growth after about a month.
https://www.gardeningknowhow.com/edible/fruits/citrus/controlling-citrus-scale.htm