No lemons on my 5 year old trees zone 9b

I have not had any Leomons on my 5 year old trees
Citrus trees , zone 9 b
I tried compost and citrus fertilizer
Nothing works.

Were the lemons grown from seed or were they grafts? I've heard that seed grown lemons can take up to 10 years before they produce in some rare cases.

I hope the trees are producing for you soon, that many years is a long while to wait!

The leomon trees were grafted and bought at home depot.

Some questions:

1. Are these grafted trees dwarf Meyer lemons? Or are they one of the the standard sized varieties grown in Florida and other sub-tropical places?
2. Have your trees gotten any flowers yet? If so, did you hand pollinate them or see any pollinators?

I've been growing dwarf Meyer lemons for about 20 years now in my unheated greenhouse. I usually hand pollinate the flowers with a small water color paint brush to maximize fruit set.  It probably took about about three years before they flowered and fruited their first crop.

I've also noticed Meyer lemons can be sensitive to sudden drops in temperature and can fail to mature a crop if they are suddenly put outside in a cold spot after flowering.

Were they properly trimmed? Some rootstocks have suckering tendency and may overwhelm the scion if not trimmed in time. It happened to me with pistachios. I was growing Chinese pistachio rootstock (that took over the scions on 5 trees) for 10 years, before I realized that I will never get any pistachio, cut them, dug out with excavator and planted again.

My first thought are:

Did wind blow all the blossoms off or did you have a freeze that killed the blossoms?

Did you have lemons in previous years?

I am in 9b and have several citrus trees that have been in the ground for a few years (3+ at least). before that they were in pots (3+ years also, at least). Just this winter have I finally gotten fruit on these trees (and they're not ready to pick but the trees are already full of flowers/buds for next year). In my case I think I was too aggressive about pruning at the wrong time.
Other than pruning any sprouts from rootstock (as well remembered above), be very careful about pruning -- prune at the wrong time and you remove the nodes that will develop into flowers. And the weather has been bizarre. My suggestion, if they're young, it to give them some time.
I also have had great results with threats, when the tree is old enough to know better: my surinam cherries were informed a few months ago that if they didn't put out blossoms this year I'd be ripping them out. Lo and behold, they're covered wtih buds now.

Seriously, if you give us some more info we'd all be glad to help troubleshoot.

Tereza Okava wrote: I also have had great results with threats, when the tree is old enough to know better: my surinam cherries were informed a few months ago that if they didn't put out blossoms this year I'd be ripping them out. Lo and behold, they're covered with buds now.

I have been told that with a cherry tree that wouldn't fruit, the owner tied a very tight band around the trunk just before the branches shortly before the expected flowering time. This "threat" to the tree, convinced it that it should produce offspring (which is really what flowering and fruit is all about from the tree's perspective) right away, before it might die.

The person who told me this story was an observer, so I would do a little research to see if others have tried this technique in case my memory and and my friend's memory have the particulars not quite right . However, long story short, it is possible that an environmental threat, might actually trigger the plant to flower. Once you have flowers, I agree with the comment above about hand pollinating. I do that some years with my peach tree if the weather is iffy and I'm not seeing many insects, particularly bees.

Jay Angler wrote:
I have been told that with a cherry tree that wouldn't fruit, the owner tied a very tight band around the trunk just before the branches shortly before the expected flowering time. This "threat" to the tree, convinced it that it should produce offspring (which is really what flowering and fruit is all about from the tree's perspective) right away, before it might die.

We're getting off into the weeds here, but I know I've heard someone (maybe here) talk about whipping/thrashing plum trees. That may be my next act of plant abuse....

Makes me think twice about planting lemon seeds here  I want to plant them in spring, but if it takes ten years then maybe that's not worth it.

Riona Abhainn wrote:Makes me think twice about planting lemon seeds here :(  I want to plant them in spring, but if it takes ten years then maybe that's not worth it.

I would go for it, if you have the space and don't have better ideas. The trees will help absorb noise pollution, air pollution, and are very pretty. The roots will hold the soil in the winter. Trees don't sequester much carbon in the first 10 years, but every bit helps!

My Meyer lemon started off in the orchard, where it was accidentally treated to a small amount of ash.  Wasn't happy.  Moved it to nearer the house where I could keep an eye on it.  It hated the cold south wind and the hot northerlies.  Moved it again, so it was sheltered by shrubs on one side and the carport on the other - finally success.  Although still subject to the vagaries of occasional drought conditions and predation by the (expletive deleted) deer.  There's a nice crop ripening now, which has me looking out the marmalade, lemon butter and Moroccan pickled lemon recipes.