Haiku and Nature

Haikus have to speak of nature with the use of kigo (japanese for nature word). If they don't, then what are these poems I am writing called. Senryu? Any ideas?

Are These Posts Haikus or Senryus?

Since I am not speaking exclusively of nature or humanity, these posts can be anything you want them to be. However, most of the poems I have posted so far imply ironic and satirical situations, making them more like senryus than haikus. I think I also focus more on the "ahhhh" moment than the topic itself.