The air is warm, smells of spring,
The Earth is young again,
Buds and flowers,
Gentle showers,
The Earth is young again.
Summer brings heat to the plain,
And bright blooms in bowers,
All pretty sights,
Warm starry nights,
And bright blooms in bowers.
Slowly windy grow the hours,
Autumn in mellow lights,
 Harvests you bring,
In thanks you sing,
Autumn in mellow lights.
The chill wind nips and bites,
A cold winter does bring,
Snow, hail or rain,
Frozen domain,
A cold winter does bring.

Albeit late, a poem for Day 20 - The Roundabout. I could not ensure the meter /foot but it does not sound so 'off' so maybe some sort of a meter is there. And I think (even if it sounds like a desperate case of self praise), the 'seasons' suit this form quite well.

Poetic Asides inaugural Poet Laureate,Sara Diane Doyle developed this form with one of her students, David Edwards. In her own words -

"A few months ago I began exploring various poetic forms.With each form I tried, I would post my attempt on a forum for teen writers, where I am a mentor.One of the teens, David Edwards, got interested in forms, especially the "created" forms.He asked if anyone could invent a form and I said "sure!"Then, he got the crazy idea that we should create a form together.

To start, we wanted to throw in every poetic element that we really liked.David came up with the meter and feet and I added in the repeating line.We came up with the rhyme scheme and length together.The result is a form we call the Roundabout. In this form, the rhyme scheme comes full circle while offering repetition of one line in each rhyme set.

The Roundabout is a four stanza poem, with each stanza consisting of 5 lines.The poem is written in iambic and the lines have 4 feet, 3 feet, 2 feet, 2 feet and 3 feet respectively.The rhyme scheme is aBccB/bCddC/cDaaD/dAbbA.  

Roundabouts can be on any subject."

~Robert Lee Brewster in Poetic Asides~