I purchased my trees almost 2 months ago, and they were doing really well, when I noticed they were loosing leaves, soon followed by the blossoms, and then even the lemons, and limes that were growing on the trees. I keep them in pots and have them setting inside ( I am in ND) where they get morning sun, and I maintained temps at 68 degrees. So now I dont know what I should do, do I trim them back cause the stems are still there just nothing on the end of them. Also is this common the first year you have them?
Thanks for any help you can give me.

I'm going through something like this wth my meyer. all leaves dropped as well as all blossoms and fruit. Frustratin, isn't it?

I would NOT trim them back... only trim if the branches are going brown, scratch the surface and see if its green. green means alive... so it still could come back.

Is it getting too much water, not enough? Citrus HATE to be overly wet and in big pots. One shouldonly water when the top 3 inches of soil are dry.

are you fertlizing? what kind, how much?

With the leaf and fruit drop... DO NOT fertlize again until you notice new growth

I'd check the soil, make sure its draining well and not tooo wet

Using the finger method to check the top 3 inches of soil works sometimes but for me it didn't. I do not grow my citrus in soil but rather a soiless mix called soil conditioner made from bark. This is a free draining mix but can hold a tremendous amount of water in the BOTTOM of the pot. The top 3 to 4 inches of the top were nice and dry but my trees still showed signs of being overwatered. I could not understand why this was happening until I got root rot. When I unpotted the tree to investigate the bottom 5 inches of the pot was SOAKING,SOPPING, WRINGING, WET!!!!. Well this explained my problem. The pot was not getting enough air circulation to dry the bottom of the pot sufficiently. Now I have a wick in the bottom of all my pots. The wick is about 6 inches long and hangs out the bottom. Since the pots sit on a rack all the excess water will drain via the wick to land harmlessly on the ground. My trees are much happier with the addition of the wick.

Not everyone has an abundence of space under their pots so the wick only NEEDS to be 2 inches or so. Just as long as you have the pot raised so the wick will not touch the drained water container (will wick back up) you will resolve any bottom of the pot overwetness. The draining water will also pull air into your trees root zone.

After the trees were treated for root rot and the medium replaced with fresh they started responding favorably. To this day they are doing fine and this is the 2nd winter I have pulled them through.

The BEST way to water your trees is to use a moisture meter. Only water when the meter says dry. These are very inexpensive(less than $5 here) and are available at most all nurseries,home centers,Walmart,etc.....

Check the bottom of your pots and see if the medium you are using is holding too much water down there.

I still have them in the small pots they were in when purchased, and the top soil actually seems to shed the water, so I actually started watering from the bottom, If I repot them what is the best to use, and should I put them in bigger pots only if their root lump is almost equall to the size of the pot? Thanks for the help so far, sorry it took me a while to respond, was out of town and did not get on a computer. Thanks again.

Citrus fuss and complain if their homes are too big or increased too fast. Increase the pot size no more than 2 sizes bigger than the present one 1 size larger is best unless the tree is completly pot bound, then I would go to 2 sizes larger. Watering from the bottom is ok as long as you flush the pot once in a while. Bottom watering causes salts to build up on the surface of the soil. If the salt builds up to where its visiable it CAN be toxic to the plants. Watering from the bottom does not allow the excess salts to be flushed out as it normally would if watering from the top.

Citrus will drop their leaves if they are in too small of a pot,if you over water,if you under water,if it gets cold, sometimes they drop leaves for no apparent reason. Yours may be dropping its leaves because it IS in too small of a pot and is unable to recieve the nutrients it needs to grow. Make sure that what ever you growing medium you use is well draining.

When watering from the top,you can water and then water again 20-30 minutes later. This will insure that the entire rootball has been watered fully. Use warm water as it absorbs better than cold and citrus don't like cold drinks. Hope this helps.