I see very few poems with the pyrrhic and spondee meter used, so nice attempt here. Meter is followed mostly throughout the poem, but at a few places it kinda goes a bit awry. A little bit more refinement here and I'm sure it'll sound even better. When writing structured poetry, try and keep a stanza uniform, like make each stanza a part of a human being. It should have eyes, hands and legs of the same shape, size and color. You've obviously followed the couplet scheme properly, but at times the meter is kinda peculiarly attempted.
Like for example,
"Yet the sun grows hotter by every day
Leaves turn colors and fall to the ground
Without a thought of dismay
We all prance and dance around"
So the first two lines follow the stressed, unstressed, stressed syllables; but then the next two kinda just become random. This has happened in all the stanzas, the first two lines are in flow, but the next two completely break the rhythm...
Maybe something like,
"Yet the sun grows hotter by every day,
Leaves turn colors and fall to the ground,
And having no thoughts of dis-a-may,
Dancing, prancing, we proceed to do around.
Notice here how I made dismay a compound word by adding "a" all in order to match the meter. Also I used an "inversion" figure of speech in the next to line, to again match the meter and also to add a bit more flair to the poem in general. Which is a point I'll get to next.
Okay, so you've got good meter and structure ready for a poem, but I kinda personally feel that it isn't used to its full potential. Most lines sound a little bit "off" and there are a lot of instances where you could've done more imagery. Your poem is after all on nature, a theme that kinda demands that visual experience. Try and add more "flair" to the poem, use more figures of speech like metaphors and taughtologies, and use more creative lines.
For eg. I'll take your first stanza...
"And when snow falls plants disappear before our eyes
But when the melt comes plants spring up once again
Yet even under the sun winter still thrives
But an animal will still come out from it’s den"
And when the white dust blankets our eyes, (figures of speech used: transferred epithet, and personification)
But then the rays of life come once again,(oxymoron)
Yet as stubborn as a mule, the frost thrives,(simile, personification)
But an animal, still emerged from its den. (No change.)
One more thing, you might not think about this at first but, punctuation even in poems is extremely essential. It has a lot of uses, from correcting meter, to stabilizing flow and rhythm. A poem is like a river, you don't its flow to flood so you build dams, or commas and semicolons to restrict the flow where required.
I happened to have composed a poem on similar grounds like yours, actually.
"Seasons"(A Spencerian sonnet, it follows the iambic pentameter, and scheme of ABAB CDCD EFEF GG)
"Seeping through the welkin, radiant sunshine,
Pouring from the heavens, like a silvering waterfall,
Passing through the sill, into the house mine,
Causing me the wonder, of nature and fall;
Painful striking wind, like a tornado threatening all,
The world all around, golden, beautiful, scenic,
But then came down snow, a blanket covering all.
Mother Nature caring, for a child who was sick.
Snow and ice all around, as hard as a brick,
But then rose up Sun, as mighty as a king,
Rays of life and healing, melting the snow thick,
Joy and allurance galore, as came forth spring.
I waver back to reality, through sheer fortitude,
All I have in this wasteland, is the bliss of solitude."
Also if you want to make more poetry/ review poetry you might want to take part in the poetry prompts that I regularly put up on the site...speaking of, I should probably get my lazy ass to go and review them. Oh and don't worry about the "weekly" word in it. There's virtually no time limit so feel free to upload new poems. I actually need help in reviewing the poems there, so I would be glad of you, or anyone else could help me out in reviewing.