We have many types of bulbs on our lawns as well as weeds and moss. How can I feed the lawn and bulbs as well as exterminating the weeds?
This would be difficult to do with a one treatment plan.
Moss will need to be dealt with as a separate issue. Correctly the lawn conditions that are creating an environment for moss to grow is the first step.
Generally speaking a weed and feed type herbicide will kill anything with a leaf. If bulbs are leafing they would be killed.
If the bulbs are dormant they would most likely not be harmed.
Read all labels carefully and follow directions for the application of chemicals.