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I have had a lemon bonsai for about 18 months now and it has been sick for some time. The tips of new leaves tend to go brown after they reach full size and the leaf later drops off. I lose maybe one leaf every three months.

I water it so the soil is always damp to the touch and fertilize it once a week. I do this for my other two bonsai, they are both fine.

It is in a well lighted drawing room near a large window.

I'm fairly certain this must be a watering/fertilizing issue as none of my trees have any pests I can see.

I would be grateful for any help,

Thanks and regards,
- Michel Buzz.

hi michel
if i were you i would let it be with fertilizer for a while you might be over doing it and let the soil dry out a bit then water it again but be sure to let the soil dry out a little more cause plants dont like to have wet feet 24/7 where you live what season is it there and what is the temputure
i live in australia and it is end of summer so i will water pot every 2 days depending on heat and fertalize every 3 weeks
cheers dean

I don't know much about Lemon Tree's but they are a mediterranean tree so Dean's advice will be right, let it dry out a bit more.

Let us know where your from and someone else might have another suggestion.

Dave...

Hi Michel.
Just three more points to consider. Have you checked the ph level of the soil (it needs to be slightly acid) and that the room temp is 55 degrees or above at night? Are you using a citrus fertilizer to feed?
Regards.
Shaun.

Hi there,

Thanks for your response and kind help.

I'm actually trying the opposite at the moment. In other words I am watering until it drips out in to the tray, waiting till the soil absorbs the water then repeating. The reason being that most sources tell me curling at the end of the leaves is due to loss of water. As the tree is in a relatively large pot for its size it's possible I need to water a bit more than normal. Anyway, all I can do is try different approaches. If it gets worse I know I am doing it wrong. There is very little good info around on citrus bonsai.:blink:

And about fertilizing, the problem existed before I started fertilizing so I don't think that can be it. The fertilizer I use says once a week so for the time being I will be glued with that.

Thanks a lot again.

Regards,
- Michel

I don't know to much about lemon trees but I have read in a couple different places that your not suppose to fertilize trees when there sick!

Can it be a case of a leaf miner? Did you check the leaf for any presence of insects? Leaf miners are usually protected from many predators and plant defenses by feeding within the tissues of the leaves themselves, selectively eating only the layers that have the least amount of cellulose, so it is possible that you won't see it. An effective way of controlling them is by removing the infected leaf.

Michel Buzz wrote: I lose maybe one leaf every three months.

I would be grateful for any help,

Thanks and regards,
- Michel Buzz.

If it's just one leaf every three months, I shouldn't worry about it, but if it's more it can be because of overfertilizing, maybe you should fertilize it every 2 weeks and then check if the problem is gone



(Btw. replaced this topic to Help! )

Hmm, I agree that you shouldn't be too worried if it's only one leaf every three months. The next time you repot, check that your roots aren't becoming moldy with all of this water. Otherwise, it's probably just a natural characteristic of your tree. I know that some trees have a habit of dropping major branches for no apparent reason, even when there's nothing wrong with them. It's probably just a little quirk of your bonsai.