what depth should I use when laying down barkmulch to suppress weeds in a flower garden?

Question

No additional details

Answer 1

It depends on the type of bark mulch you intend to use. A small bark should be applied at a depth of 2 to 3 inches around plants. Larger bark can be applied up to 6 inches deep.

This article will help you:
https://www.gardeningknowhow.com/garden-how-to/mulch/spreading-mulch-in-gardens.htm