just monitor it, I ended up in the hospital for 5 days once because I had a bad episode and let it go to long. As far as foods, none bothers me really, they say small seeds can get in the diverticuli and cause swelling but if you start feeling pain in your lower left quadrant, that is a sign of a flare up.

And this helps

Nuts / seeds causing diverticulitis has been debunked by numerous studies. Focus on a high fiber diet instead.

Neighbor had it. Couldn’t eat banana because even the banana has seeds.

Truth . That was one of the things I discussed with my doctors. One of my surgeons said,” If I knew what brought this on, I’d be a household name in the GI community.”. Dude doesn’t look like a surgeon, looks like Paul Bunyan. . Great bedside manner, though ! Once asked him what the chances of removing the Purse before turkey season, he said,” Keep whining and I’ll leave it on through deer season. Save ya the trouble of getting out of the stand .”.
I appreciated his candor.

I agree. My wife has diverticulitis and eats nuts, popcorn, etc without any issues. As I said in a previous post, milk and ice cream are hazardous for her.
I have always eaten lots of fiber and take Metamucil twice a day. I've never had any intestinal troubles. I wish I could get my wife to start taking it. I think if would solve some of her intestinal problems.

To each their own, every body is different. Ive been hospitalized once for a lengthy stay and dropped to my knee with infection two other times not heeding my doctors advice about seeds and nuts. Ive always had a high fiber diet without constipation. Ill stay away from seeds and nuts as these were consumed by me before each bout. I don't believe in coincidence.
What ever works for your body is the best way for you. I wish for no one to have to suffer with it and have to wear a colostomy bag for a year or life. Good health to all.

I'd trust a stranger at a truck stop over some of the advice on here.

I would ask your Dr.

My brother drug his feet on dealing with it and it lead to him getting a perforation (bascially it irritated his guts enough to wear through in to his abdomen).

Turned into multiple hospital stays and them cutting out ~16" of his guts. Darn lucky he doesn't have a colostomy bag at 46.

His Dr told him it all likely could have been avoided had he came in sooner when he had signs and altered his diet a little.