All you need to do to participate is to write one haiku a day for February.
I am using the prompts from the NaHaiWriMo facebook page, but the important thing is just to write 28 haiku (or more) in February!
The prompts are all starting with the letter "N":
February 1 - Now
the broken gear
on the time machine
February 2 - Noisily
from around the bend
both haiku by Deborah P Kolodji
The prompt for February 3rd: Nervously
The prompt for February 4th: Nakedly