I thought I posted this yesterday and came back to look for any replies, but I cannot find the thread anywhere. Sorry if this happens to be a duplicate.

I bought a meyer lemon in the summer and have brought it indoors now for winter. It has blooms all over but there are 3-4 branches that have transitioned from green to black.

We recently purchased a grow light after it lost a number of leaves.

Are the black stems dying? Should I break them off / leave it? The tree has numerous blooms.

Thank you.