My question is in this photo http://www.flickr.com/photos/andersondotcom/5605562448
How do I get rid of this and which products can I use? I do not have insecticidal soap or neem oil. What can I use instead?
The picture you show is of leaf miner. Here's another article on these pests: https://www.gardeningknowhow.com/plant-problems/pests/insects/leaf-miner-control.htm
Neem oil is commonly available, and fairly inexpensive. However, if for some reason you can't get it, you should be able to make one of these remedies yourself: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/white-oil-insecticide.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/homemade-soap-spray.htm
My indoor lemon tree has scale bugs. I washed them off with insecticidal soap, scraped off the scale (used an old electric toothbrush) and rinsed the tree off and sprayed the tree with alcohol. Do think the stems where the leaves fell off will come back or do I have to trim the naked stems off? Will I have to retreat the plant?
It sounds as if you were pretty thorough in treating your lemon tree for scale pests, so at this point I would hold off on any trimming or pruning to give your tree time to regenerate and recuperate from the pests and the consequent cleansing. As for retreating the plant - a re-occurrence of scale pests is in the realm of possibility. I would advise keeping a close eye on your lemon tree for awhile to be sure you eradicated them and remove any new scales you see.
For more information on controlling scale pests, please visit the following link:
https://www.gardeningknowhow.com/edible/fruits/citrus/controlling-citrus-scale.htm
I have had my Meyer lemon tree since it was 2 years. I had no problem with it. This winter I had some work done on the door of the porch where the tree is. It was extremely cold outside and snowing (around 10° F). The door was open and cold and snow entered the porch area. After that day all the leaves and flowers withered and dried off. The tree has not a single leaf on it now. Is it dead? Will leaves grow back?
Thank you
Exposure to freezing temperatures most likely killed your Meyer Lemon tree.
Here is an article about Meyer Lemon tree care.
https://www.gardeningknowhow.com/edible/fruits/lemons/growing-meyer-lemons.htm
The falling leaves look perfectly healthy. I have tried keeping the soil damp and that hasn't helped. I just purchased this tree about two weeks ago.
I suspect that this is either a watering or nutrient issue (or combination of both). It is my recommendation to review the watering and fertilizing guidelines for citrus trees in the articles below:
Fertilizing guidelines for lemon trees:
https://www.gardeningknowhow.com/edible/fruits/lemons/learn-about-fertilizer-for-a-lemon-tree.htm
Tips on watering your lemon tree:
https://www.gardeningknowhow.com/edible/fruits/citrus/tip-on-water-requirements-for-citrus-trees.htm
Causes of leaf drop in lemon trees:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaf-drop.htm
10+ year old lemon and orange tree, 8 ft tall. Planted outside but protected in winter. Last year - new enriched soil added around trees. Fertilized - rarely. No blooms but new leaves. What fertilizer would encourage blooms?
A high-phosphorus fertilizer or bone meal will help to encourage blooming. Here is more information: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm
This article will help you:
https://www.gardeningknowhow.com/edible/fruits/lemons/learn-about-fertilizer-for-a-lemon-tree.htm
It is a potted lime/orange tree.
I have attached a few links for you.
I would start with watering, look for any sign of insects or bugs, lighting....
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaf-drop.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/growing-lemon-trees-containers.htm
About two weeks ago I planted a seed from a lemon and it sprouted. I read somewhere that the sprout needs a lot of water as it grows so I try to check it every day. A few days ago I noticed the leaves had curled up. Now it looks like the part of the stalk directly under the leaves is thinner than the rest of the stalk and a little bit brown. I have it planted in a plastic cup.
Lemon tree seedlings need to be in a warm location with plenty of direct sunlight. The soil should be moist but not too damp/soggy. Is it possible you over-watered? If you watered it everyday that was probably too much.
For more information on growing lemon trees, please visit the following link:
https://www.gardeningknowhow.com/edible/fruits/lemons/how-to-grow-a-lemon-tree.htm
Thank you. Do you think it'll be able to get past this or did I kill it?