Whether punctuation is necessary depends on your writing style and the format of the poem itself. Of course, there are also mixed situations.
For example, "Tears" used two full stops; "Skydiving Tower" uses three punctuation marks, two of which are periods:
My lonely morning in the north
One morning in the north.
Miss someone.
Another example is the mixing of punctuation marks and broken sentences.
A stray dog
Green goose under the key
With the same name, covered with
My cup
Your wild flowers
Name,
It's like on a blue ice cube.
The overflow of light blue water.
How to use punctuation, the key depends on the artistic conception of poetry, such as:
The distant rain is gone forever, and it's sunny and interesting.
Come here, street tree
Give a clean body,
In broad daylight,
Crisp, satisfactory, revealing amazing beauty.
Above the city wall, white hair clouds
Tears flow out, the ancient gun in the distance.
Dressed in the rain, like a wet one.
Birds of time, gather.
Under the wing, there is a bruise.
......
Where the soul sinks, history is like dust.
Slip, even if
At some point, it suddenly expanded.
Just because it's messy
Nostalgia, like this moment.
In a word, I think punctuation marks are like nails in poetry, which makes poetry tense, just like wild flowers scattered on the grassland, which makes poetry beautiful. Friends who are interested in punctuation, try it yourself without browsing.