Head over to the f/k/a Mother’s Day Haiku Collection (originally posted May 10, 2007), if you’re looking for haiku and senryu for a Mother’s Day card. There are dozens of poems (not all sappy or saccharine), including this pair:
orig. haiga at MagnaPoets (May 10, 2007)
grayskies
on mother’s day –
grandma’s favorite parkpoem: david giacalone; photo: arthur giacalone
i follow her recipe,
but something’s missing…
mother’s day……. by ed markowski
Here are three from the new edition of Upstate Dim Sum: 
calling home
the color of mother’s voice
before her words
………………… by Hilary Tann – Upstate Dim Sum (Vol. 2008/1)
orig. pub. The Heron’s Nest IX:4; also “dust of summers: RMA 2007”
watching a rerun
my granddaughter
in my daughter’s arms
……… by Yu Chang – Upstate Dim Sum (Vol. 2008/1)
orig. pub. Frogpond XXXI:1 (Winter 2008)
winter sky —
an empty nest
left behind. . . . by Tom Clausen – Upstate Dim Sum (Vol. 2008/1)