No, too much water does not make the leaves of a citrus tree curl. Hot sunshine is what makes the leaves curl and twist.
Fern leaves may curl due to lack of humidity, too much sunlight, or overwatering. Adjusting these factors can help prevent curling leaves.
citrus trees dont really like alot of water, they do well if you let the dirt dry a little (but not bone dry). The leaves might cruel because to much water or to little water. You are more likely to kill it by over watering it, then by letting the soil dry a little. Remember citrus trees are native to warmer temperatures, so keep that in mind. AND please do some research before doing something like growing a tree, it helps if you make it a habit.
one cm a minute
The plant is either over fed, over watered, or given too much direct sunlight...or all of the above
Either not enough water or too much water.
It could be that either; the area your growing them in is too cold or maybe it's getting a draft on it. Sometimes if the plant is getting to much light or there might be a relection off the tray your plant is sitting in will cause curling of leaves.
As much as the plant needs. The excess water is thrown out.
too much water
curl the bottom seperately from the top. do as much as u can first. then do the bottom
Same as any other tree. Water and Sunshine. But citrus trees are tropical, so you need to look up how much sunlight and water your specific tree needs unless its in its natural environment. I suggest looking the name up in google.
The cuticle helps prevent too much water from escaping.
Female koalas can meet their water requirement by eating eucalyptus leaves and do not need to drink additional water. Males drink some water in addition to what they get from leaves.