Poem uses personification to bring life to the morning and night to describe with clear detail, what the dawn looks like.
When the poem says "night woke to blush", it is a specific example of personification (because "night" is a concept and not a living thing, but it is being given the ability to do human things). This creates meaning because it is a fun way to imagine the pink hue to the sky during dawn.
The personification also develops mood and tone because it makes the reader feel like they're watching an interaction between two living things, not just the transition from night to day .
Personification helps develop meaning in the poem by describing what is happening in the night. It also develops mood and tone by carrying a certain connotation for each word. For example, when the author says "as falls the restful night", the reader feels peaceful because of the word such as falls and restful.