Lemon Tree leaves curling
Please advise as to the condition that may be causing the curling leaves. Also, best watering and fertilizing regime for this tree.
Arapahoe County Colorado trees and shrubs
Thank you for sending pictures. They are very helpful. I do have a few questions for you about what I'm seeing.
In the third picture, it appears that there are light colored splotches on the leaves. If there are light colored areas (and it's not just the way the light is showing up in the picture), would you mind sending one or two close up photos of the affected leaves? Both top and under sides of the leaves would be great.
Also, how long ago was this tree purchased? Was it outside for the summer and brought in as the weather got colder? Is it close to a forced air furnace vent or is it close to a door that might be opened frequently during cold weather?
And, one last question, when you look at the leaves, especially the under sides, do you see any evidence of insects?
Thank you very much for your attention to our problem. We are sending you new pictures of the backside and the front of the leaf.
There are no visible signs of splotches
Yes the plant was out during the summer and has been inside for the last 4-6 weeks.
It is not close to a heater or air outlet it is next to glass doors that are facing to the south, but not opened very often.
As far as insects there is no evidence of any.
I want to thank you for your kindness in help save a tree.
The interesting article below is from University of Wisconsin Extension. It is a fairly comprehensive explanation of the history of cultivated citrus plants and how to care for your Meyer lemon.
It covers information about the care of your indoor plant, including temperature, light requirements and soil moisture. It mentions that an indoor citrus should be kept barely moist in the winter time, a symptom of over watering being cupped leaves. Because this plant is going to be using less moisture inside during the winter months, allow it to dry out slightly between waterings. This should help it to recover.
Other considerations are a minimum of 6 hours of sunlight and additional humidity. Bringing a plant inside, even if it is placed near a south facing window, drastically reduces the amount of light it is used to receiving outdoors. Try to place it where it receives the maximum amount of light. Also, because our winters are very dry (particularly if you have forced air heating in your home), the humidity will be very low. You might consider using a cool mist vaporizer during the day to increase the humidity around the plant.
Good luck! See the full article linked below: