Sanjaya Malakar, of American Idol, fame has reason to often be happy if he tokes as often as his momma.  TMZ has learned that Sanjaya’s mom, Jillian Blith, was arrested in 2005 for growing over 300 marijuana plants.  Can you guess who ratted her out? Well that would be Sanjaya’s sister, Shyamali (you know the Hooters girl).

The Momjaya was pinched by the Pierce County Sheriff’s Department in February 2005 in Pierce County, Wash. after they found 310 marijuana plants — and the Sis-jaya keeping watch with a bag of weed and “smoking devices” — in the Malakar family garage, as the National Enquirer first smoked out today.

But — buzzkill — Shyamali, who was arrested for possession, directed the cops to another green-growing facility nearby, where they arrested Blith and her husband, Charles Quist (Sanjaya’s stepdad). Quist’s mugshot, obtained by TMZ, bears a striking resemblance to Gary Sinise, a very blitzed Gary Sinise. (We’re told there’s a mugshot of Shyamali, but it can’t be made public because she was only 17 at the time of the bust.)

Poor Sanjaya’s life or that of his family will never be the same.  Sanjaya has looked very mature and intelligent in his 3,452 interviews during the past week.