I want to give my lemon tree some extra light when I can't take it outside and I don't know what type of light I need.
If you are just looking to overwinter a plant, a standard florescent bulb placed 6-12 inches from the plant will suffice. It does not provide a complete light spectrum, but it is enough for a plant for a few months over winter.
If you are looking for a light to help plants over an extended period of time, you will need to get a full spectrum, "grow" light. It will provide the red and blue spectrum that plants need in the long term. It looks just like a florescent light, but will be marked as a plant light and will cost a good deal more than your standard florescent bulb. As with the florescent bulb, it needs to be close to the plant to be effective.
I have a dwarf Meyer lemon tree that has lost all of its leaves. I cut into a small branch and it is still green. Does this tree have a chance to survive? I live in western Washington state. Should I plant the tree in the ground?
It can be saved. Make sure it gets the proper care and the leaves will regrow. I would not recommend planting it in the ground until it has regrown its leaves. Here is some help for its care: https://www.gardeningknowhow.com/edible/fruits/lemons/growing-lemon-trees-containers.htm
My dwarf Meyer Lemon tree lost 3 leaves this week. It has produced lots of new foliage and is full of blossoms. It is an indoor potted tree that stands 3 - 4 feet tall.
Of the leaves that fell off; the underside has brown spots and the top side is beginning to get yellow splotches. What can I do?
It sounds like you may have a pest problem, possibly scale. Fortunately, all the pests that can cause this kind of damage are treated the same way, so when you treat for one, you treat for all. This article will help:
Also, make sure the tree is staying evenly watered. Uneven watering can contribute to leaf loss.
I live in southeastern Texas and this year we have had three hard freezes. I have a 10-foot lemon tree and it really got hit hard this last freeze. The ends of the branches are brown and I am wondering if I can prune it way back?
As long as you are pruning back what is dead, this is fine.
I planted a Meyer lemon tree three weeks ago, and now the leaves are falling off. Is my tree in shock and should I pull the blossoms off? What can I do to save my tree?
The tree probably needs more water. Make sure you are watering every day until the is established. If you are already watering everyday, tamp the soil down around the roots. There may be an air pocket that is causing the roots to dry out.
This article will help:
The tips of the leaves of my potted Meyer lemon tree are a blotchy yellow. What is the reason?
Did you fertilize or spray the plant recently? This sort of spotting can happen if it is fertilized or sprayed while slightly under watered.
We have a dwarf Meyer in a conatiner on our deck, which gets about five hours of direct sunlight every day. It was purchased a year ago and and repotted at that time. Last year it produced fruit on the lower branches only. It was fed in March and has just finished dropping its blossums, but a lot of the early fruit is turning yellow and dropping off as well. Can you suggest any solutions?
It sounds like a nutrient problem or possibly a water problem. Fertilize the tree and make sure it is getting enough water.