We can not be absolutely certain whether the leaves of your birch trees are falling on schedule or not; there are too many factors involved. Nor do we know if your trees are in danger, however, we can tell you signs to look for:
鈥 do the leaves have spots? This could be an indication of fungal disease or insect feeding.
鈥 drought stress can cause leaves to turn yellow and drop. Drought has been a problem in a lot of places.
鈥 it’s possible that your birches have an iron deficiency. This stems (no pun intended) from poor soil鈥攑oor in terms of what the tree needs. Soil that is too alkaline for iron to be available to the tree can be a problem. Adding iron sulphite can help. But get a soil test before you add anything.
鈥 Finally, look around the neighborhood or area for trees like yours (with or without their leaves). If they have not dropped their leaves, see if the owner can share his care tips and ideas. If the trees have dropped their leaves, do the same. At least this way you will have a better sense of this is a singular problem for you or if other birches are 鈥渁cting鈥 the same way.
We can not be absolutely certain whether the leaves of your birch trees are falling on schedule or not; there are too many factors involved. Nor do we know if your trees are in danger, however, we can tell you signs to look for:
鈥 do the leaves have spots? This could be an indication of fungal disease or insect feeding.
鈥 drought stress can cause leaves to turn yellow and drop. Drought has been a problem in a lot of places.
鈥 it’s possible that your birches have an iron deficiency. This stems (no pun intended) from poor soil鈥攑oor in terms of what the tree needs. Soil that is too alkaline for iron to be available to the tree can be a problem. Adding iron sulphite can help. But get a soil test before you add anything.
鈥 Finally, look around the neighborhood or area for trees like yours (with or without their leaves). If they have not dropped their leaves, see if the owner can share his care tips and ideas. If the trees have dropped their leaves, do the same. At least this way you will have a better sense of this is a singular problem for you or if other birches are 鈥渁cting鈥 the same way.
We hope this helps!