Thanks for writing. Manure is basically organic fertilizer and can help your plants push out more new, healthy growth. But you should only use manure if it's aged (at least a year old) --- otherwise, it may contain too many salts and harm your plants.
I'd mix it evenly in your soil and keep at least a gap of an inch between it and any of your plant stems.
---Justin, Senior Garden Editor, BHG.com