From the amount of insects on that tree, I would close off that room and try a bug fogger then start the Bayer treatment....
I would spray it with a good insecticide and then treat it with Bayer Advanced tree & shrub. That should kill any insects feeding on the tree....
You have citrus leafminers, it is not a disease it is a insect.
The circle looks like your bud union, anything below must always be removed asap.
Dan that is the rootstock and needs to be removed. It is either citrange or swingle. If you don't remove it, it will take over.
They could also be water sprouts. Water sprouts will produce thorns and are very vigorous and the leaves are usually double the size of normal...
I would recommend Caldwell nursery. http://caldwellhort.com/html/citrus.html
Hey Greg. Some are ok and some are really dry and nasty. Way to many seeds for me, but they are quite hardy.
The first photo is of a Ichang Lemon or hybrid of it, not a Pumello. Notice the serrated edges on the leaf and pointed leaf tip. Pumello leaf...
Still none of them are really eatable out of hand. The hardiest good tasting citrus would be the Juanita tangerine and the satsuma mandarin. Both...
Most citrus take 9 months or more to ripen from the flowering stage. Some like the Valencia can take a year or more.
What you are seeing is normal. Must lemons produce purple new growth and flower buds. Those are flower buds by the way, not new growth. They will...
Or do they look like this ?
The most common cause on a new tree is sunburn. The growers usually have the trees in a shade house. When you buy the plant and bring it home &...
New flushes are always much lighter in color. They will darken up as they harden off.