Our lemon tree has been in the ground for at least 40 years. It's roots are in dirt - at least two feet from the house and 12 ft along the house. 25 years ago decking was installed leaving about 2 foot round space around it. Decking slats allow water and liquid fertilizer to get to roots. There is also a small 'door' on the deck that can be lifted out for more access through pipe installed there - about 5 Ft from tree. In both places there is visible soil. We've had a lot of rain this year (SF Bay area). The leaves are very sparse now. It's still producing some lemons, but looks sickly. All help appreciated.
The first thing would be a good hard maintenance pruning. This will help restore some of the tree's vigor, as it still has quite a bit of potential life left. This article will help with that:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-pruning.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaf-drop.htm
After this, I would look into maybe checking your feeding pipe. when you pour feed with water, or pelletized feed, does it drain down quickly? If not it may need to be unclogged or replaced.
My lemon tree is about 2 yrs old and 3 ft tall. It's leaves are turning yellow and it doesn't seem to be growing. The lime tree was planted at the same time and is about 1-1/2 times bigger and bushier. Both are plant ed in the ground. We drip water them 3X a week for 20 min. No limes yet, however, the lemon tree has a very small lemon for about the last 6 mos.
Unfortunately, your photo did not come through. I will be unable to ID the issue without seeing, exactly, where the yellowing occurs or how it appears on the leaves.
I can provide an article that will offer some suggestions, though:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaves-turn-yellow.htm
We brought this dwarf lemon tree from bunnings 1 year ago and it's never fruited
That appears to be quite large of a container. Going up too large, too fast, will keep it from fruiting for several years. In order to fruit properly, they prefer to be root bound and well established. It may be a couple of years before you see fruit from it, at least until the roots have time to fill out that container.
Another thing that can affect fruiting will be the ratio of fertilizers. The best thing will be a fertilizer designed for citrus until you are familiar with mixing your own for the correct NPK ratios. This should be applied regularly, since they are heavy feeders.
The soil pH needs to be a little on the acidic side. 5 to 6.5 will be best. They will change the pH of their soil quite frequently, so it is best to check frequently.
Last, humidity could be at play here. Lack of humidity will keep flowers from forming. You may try to spray the tree often, if this is the case.
Here are some articles that will help:
https://www.gardeningknowhow.com/edible/fruits/lemons/no-flowers-on-lemon-tree.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-not-fruiting.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/growing-lemon-trees-containers.htm
I have 2 trees now 2 yrs old. need info if to prune back or what to keep in pots.
Sure! These articles will help:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-pruning.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/growing-lemon-trees-containers.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/repotting-lemon-trees.htm
I have a beautiful dwarf lemon tree. I had fruit on it the second season after I got it, but have not had fruit come to maturity on it since. I get beautiful flowers and tiny lemons, but then the lemons just fall off. The tree looks healthy - I water regularly and fertilize. The tree is currently in a south facing room with lots of light, and I will take it outside shortly. Any advice on getting the fruit to mature???
This article should help:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-fruit-drop.htm
I have a small lemon plant whose leaves are suddenly curling under. Leaves are green, soil appears to be moist and the plant gets fertilised with citrus product regularly. What am I doing wrong? Pot is right for size of plant so not pot bound.
Here's an article that should help:
https://www.gardeningknowhow.com/edible/fruits/citrus/curling-citrus-leaves.htm
When is the best time to prune a Meyer Lemon tree that is in a large pot?
Our experts say February through April are the best pruning months,
however, you can prune any time the tree is producing flowers. This article will help:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-pruning.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/growing-meyer-lemons.htm