It is now almost the end of May and our River Birch Tree still doesn't have all its leaves. There are still a lot of (don't know what they are called) worm like yellow seedlings hanging from the tree. Is this normal? I'm really beginning to worry as I love this tree.

We need to know where you live to start with. Gene

Roereale.

Yes, location is everything. @Roereale, please take a moment and click on the (little guy) Profile in the upper left corner. Then click on "Change your Public Profile" and enter your location. City/state is best but if nothing else, enter your USDA zone. Then your location will show each time you post.

Welcome to Garden.org, @Roereale !

None of the birch trees have leafed out yet in my area -- so, if you're pretty far north I'd say it is normal. The fact that it has catkins on it is a good sign that it is happy, I'd say