My Bonsai Is Turning Yellow
A dry and brittle bonsai tree is likely not getting watered often enough.
My bonsai is turning yellow. Sometimes it is not natural however and it indicates that something is wrong. Exposure to a cold environment is one of the most common reasons why leaves turn yellow. The juniper is one of the most common bonsai trees for beginners but it is an outdoor tree. Drastic moving of bonsai trees from a warm outdoor environment to an air conditioned room can trigger yellowing of the leaves.
A bonsai is a living work of art and seasonal changes can sometimes be experienced. Please do not be concerned if within 2 3 weeks of delivery your bonsai shows signs of yellowing or falling leaves normally the older leaves and not the new growing tips. Yellowing of bonsai leaves is not an uncommon occurrence and it is natural for some types of trees to change the color of the leaves. Overwatering is just about the most common newbie mistake with.
When placed inside its needles will turn yellow and the tree will slowly die. This is a condition caused by a lack of chlorophyll and results from a damaged or compacted root system as well as nutrient deficiencies such as a lack of iron. If all the needles are yellow it s past helping. Returning the plant to its regular environment will not reverse leaves color but will only stop the progression of the discoloration.
Now that you have identified your tree species you know where to put it. The yellowed part will not turn back to green even if you fix the problem.