Bad news for Presidential wannabe Roseanne Barr and the macadamia nut industry: Lifetime has apparently cancelled 'Roseanne's Nuts' after one season.

Barr took to Twitter to announce the news and thank fans: "Roseanne's Nuts has been cancelled. thanks everyone for watching!" ... "glad you guys loved #roseannesnuts-@Lifetimetv decided not to renew it."

The reality show followed Barr as she tended her 40-acre macadamia nut farm in Hawaii. It launched in July, initially airing Wednesdays nights, but never caught fire in the ratings and was moved to the Death Slot Friday nights. The final episode aired last week.

Roseanne Barr chose 'The Tonight Show' (Weeknights, 11:35PM ET on NBC) to make her big announcement for one reason. "I decided since you're the one who got Arnold Schwarzenegger elected as governor of California, I wanted to make my announcement here on your show," she told Jay Leno.

Then she turned to the crowd. "My announcement is that I am running for president of the United States," and then she added, "I'm totally serious."

She said that Sarah Palin running for President is what made her think she could do it, but Leno was quick to remind her that Palin hasn't officially put her hat in the ring yet.