Question
Hi Marc,
I live in Los Angeles, and have a Meyers Lemon tree. it was originally in a pot, and had lots of blooms and a few little lemons. I planted it in the yard, and it caught scale, which I sprayed and scraped off.
The scale seems to be gone, but the newer leaves are curled up, on the top of the tree. It has no lemons,
a few blooms on the bottom, not the top.
The bottom looks healthier.
I also have a lisbon lemon tree which is probably 7 years old that has not grown very tall and produces few lemons.
Can you help me figure out what may be wrong w/my trees, and how I can help them... I had really looked forward to those lemons.
Thank you for your assistance,
Sandra

Answer
Sandra -
the Meyers Lemon is a dwarf variety and a cross between the Manderine orange and lemon, so its not going to get very big.  Citrus trees in general have lots of requirements, but are sensitive to many variables, like sun, salt, or over-watering.  They react differently, to different problems, like mis-shaped fruit, or unripe fruit hanging on for a long time, or in your case poor production.

A nice little website regarding the care of a Meyers is here:
http://www.kathyrmiller.com/meyer_lemon_tree.htm

They like well-drained soil (moist, but not soggy), and regular fertilization.  

As far as the Lisbon Lemon, it is a true lemon (and thorny!), and will only put on fruit once a year.  The Meyer is "supposed to" produce year-round, but as you've found, maybe not, if things are not to its liking.

All citrus trees require at least 6 hours of full sun a day, as well as protection from wind.  These are relatively long-lived trees (25+ years), so give them some time to get better, too.

Sorry, I can't tell you exactly what to do, but I hope this little bit of knowledge helps.

Marc