Answer: Inviting.
The poem "The Pasture" reflects on the changes of spring in nature, but it also invites the reader to enjoy them. According to Lea Newman, when Frost talked about this poem, thirty years after writing it, he claimed: “I never had a greater pleasure that coming on a neglected spring in a pasture in the woods."
The poet wants us to come out and enjoy the spring, just as he is doing. This is exemplified by the phrase: "I sha'n't be gone long.—You come too" which is repeated twice throughout the poem.