I would probably take that plant right out of the. Citrus don't like to share nutrients, water and root space. Your tree looks dry or lacking in moisture. Have you ever let it dry out too much before? If just once then lot's of roots have passed and you need to watch your watering practices now. If your tree was taking up moisture correctly, it should be fine in the hot sun as long as that pot is not over heating..Have you ever felt the side of that pot in the full sun? I know that dark porclean can get very hot and cook your roots. Have you tried using aluminum foil or a light colored cloth of some sort wrapped around the pot? You could also use the pot in pot method. Have you checked to see whether bugs are sucking the moisture out of your leaves? Have you been watering so as to flow out from the bottom since you are fertilizing? What kind of mix are you using and how often do you have to water? Is it porous or hard like? That other plant tells me that something is wrong with your citrus roots since that plant is so healthy looking. Check the roots out and do a few corrections and see what happens and welcome from across the pond! MIke

I'm also growing meyer lemons in MN, so it's possible! 1) I'm supplementing with GE daylight CFLs during the winter, and that seems to be working. 2) Make sure your pot and soil promote good drainage. You don't want the soil to stay damp. 3) I'm having really good luck with a fertilizer called "Foliage Pro" that you can buy off of Amazon. The littlest bottle will last you well over a year. 1 teaspoon per gallon of water, and it doesn't hurt to add one teaspoon of white vinegar per gallon of water. I water about once per week or so. When you notice the surface of the soil is dry, then give it a really good dose of water, but don't water it every day. If your air is dry, you can try misting the leaves every once in a while. Good luck!

Bingo, that is an amazing Lemon tree!! Huge lemons and a very pretty shade of yellow, very healthy!! The amount of blooms are exciting... I've never seen one that nice for sale in my area. Congrats!! If the fruits are ripe...I would pick them or pick them as you need it, but I would think removing a few of them would be good for the tree...make room for the blooms that are there now? Just my opinion... Where did you purchase it from?

The branches are green so they are alive. Remove the grass from within a half meter or more. My trees do not grow in summer until august or later. That puts your date at February or later. It looks like it needs nitrogen. I feed my inground tree 28-0-4 grass feed. Make sure that the grass feed is free of any poisons but is just grass feed.