While this first poem doesn't specially refer to April, in the Midwest, where I grew up, April would seem to be the best fit. A frost in March wouldn't really be considered a late frost, while one in May is extremely unlikely. Moreover, the blossoming appears to be more like April, which seems, to me anyway, to be set between the "orchard bare" and the "orchard green." But, I'm sure there will be those who disagree with my weather observations.
Frost here uses his name to signify something dangerous, which he has done several times in the past in a number of poems. Other writers have also suggested that reading can be dangerous to one's ideas or one's perspective.
A Peril of Hope
-- Robert Frost --
The following opening lines to Chaucer's Canterbury Tales provides a different feeling about April--partly I think as a reaction to the escape from winter, as well as recognition of the beauties of Spring.
Prologue to Canterbury Tales
WHANNE that April with his shoures sote
The droughte of March hath perced to the rote,
And bathed every veine in swiche licour,
Of whiche vertue engendred is the flour;
Whan Zephirus eke with his sote brethe
Enspired hath in every holt and hethe
The tendre croppes, and the yonge sonne
Hath in the Ram his halfe cours yronne,
And smale foules maken melodie,
That slepen alle night with open eye,
So priketh hem nature in hir corages;
Than longen folk to gon on pilgrimages,
-- Geoffrey Chaucer --
from The Canterbury Tales
For those who don't have a glossary for Middle English handy:
When April's gentle rains have pierced the drought
Of March right to the root, and bathed each sprout
Through every vein with liquid of such power
It brings forth the engendering of the flower;
When Zephyrus too with his sweet breath has blown 5
Through every field and forest, urging on
The tender shoots, and there's a youthful sun,
His second half course through the Ram now run,
And little birds are making melody
And sleep all night, eyes open as can be 10
(So Nature pricks them in each little heart),
On pilgrimage then folks desire to start.
I think the opening lines of this poem plays on Chaucer's opening lines. Of course, the difference can be seen as due primarily to the differing locations for each poem: Chaucer's set in England, "Now that Aprils' here," while Eliot's is set in a wasteland. It's sort of related to Frost's poem, in that both speak of thwarted hope.
The Wasteland, first stanza
-- T. S. Eliot --
from The Wasteland
Here's another view of April, very different than that of Eliot. It's very simple and straightforward and echoes Chaucer's "April with his shoures sote ."
April Rain Song
Let the rain kiss you.
Let the rain beat upon your head with silver liquid drops.
Let the rain sing you a lullaby.
The rain makes still pools on the sidewalk.
The rain makes running pools in the gutter.
The rain plays a little sleep-song on our roof at night--
And I love the rain.
-- Langston Hughes --
I can't leave out my favorite haiku, even though I've posted it several times already.
April's air stirs in
Willow-leaves. . . a butterfly
Floats and balances.
-- Basho --