Don't worry. It's just transplant shock. I had the same problem last Sept when they were just planted. Now they are blooming with shinny green leaves. I have several of "Pink supreme", "white", "scarlet" flower carpets. Only one of the "white" flower carpets got a bit of powdery mildew last winter. They are such tough plants and easily to root. I dropped some cuttings to entertain my very busy toddler. Now I have several new plants!

Okay. First thing - is this little lemon tree getting sprinkled? If so, this is part of your issue. Citrus do not like to be in the path of sprinklers. They do much better with a deep watering via drip once or twice a week (depending upon how hot the temps get). If you're close to the beach, you probably will not have hot enough temps to water more than once a week. Lilly Miller citrus fertilizer is fine. It does contain micronutrients. Vigoro Citrus & Avocado fertilizer with micronutrients (that is the key for you) is also fine. Actually, the best NPK ratio is 5:1:3, but it's hard to find. As long as you've got a higher N (nitrogen) than P or K, as citrus are heavy nitrogen feeders, and you've got micronutrients included, you should be fine. Humic acid will also help, so look for that in your ingredients line up. I would recommend Grow More Citrus Growers Blend and mix it up as a foliar spray to help give your tree a good micronutrient feeding. Repeat in 3 weeks. Do your foliar spray in the evening. I would concur that you're probably looking at a micronutrient deficiency, possibly magnesium. Usually, you'll see a micronutrient deficiency with too much water and cold temps, so I would definitely check the roots of your lemon, to make sure it's not sitting in a puddle of water (i.e., in clay). Even though you're by the beach, you can still have pockets of clay. If you're in more sandy soil, then you're seeing an issue with both macro and micronutrients not staying in your soil, but washing out. If this is the case, then make a nice well around your tree out to the drip line. Fill with some worm castings and then top with compost. Keep both away from the trunk to prevent rot. Put your fertilizer in the well and water in deeply. Fertilize every 3 months and also I would recommend a foliar application with Citrus Growers Blend as well until your tree greens up. Patty S.

sun....I am no expert...but your pumpkins sure look a lot better than mine. I think these vines definitely can look ratty over time. I think you are good.

Thank you, tropicbeezent. I have included a photo. By temperatures being too cold, I mean for the plant: 60 degrees and below. It is in a room that's approximately 70 degrees with what feels to be a higher humidity, but I have yet to have a humidistat in place. I have been cutting down on spritzing in case it's keeping the soil too moist, but I have been maintaining a wet pebble tray. I have it filled so that the pot can rest on the pebbles without getting wet, but the water is only a few millimeters away. With the yellowing on the corner of the top right leaf, I am holding the leaf that was overlapping that exact area. I also noticed the yellowing is starting in the lowest leaves, and the youngest. Should I line the bottom of the pot with perlite to encourage drainage for the time being? I intend on transplanting once it stabilizes, so I can remove it then.