JP, Got this online...I would used ground flax seed, not crushed though...
Green Pharmacy for Diverticulitis
There are many herbs that can help. Here are my favorites.
Flax (Linum usitatissimum). Commission E, the German expert panel that passes on the safety, effectiveness and dosage of medicinal herbs for the German government, approves using one to three tablespoons of crushed flaxseed two or three times a day (with lots of water) to treat diverticulitis.
Psyllium (Plantago ovata). Powdery, high-fiber psyllium seed is the major ingredient in Metamucil and a few other bulk-forming commercial laxatives. A few tablespoons a day (with plenty of water) provide a healthy amount of diverticulitis-preventing fiber. Watch how you react to this herb if you have allergies, however. If allergic symptoms develop after you take it once, don't use it again.
Wheat (Triticum aestivum). Dr. Painter, whose study found a high-fiber diet to be the cure for diverticulitis, estimated that wheat bran contains five times the fiber of whole-wheat bread, making it the fiber-lover's fiber. He's not alone in his endorsement of wheat bran.
"Bran is the safest, cheapest and most physiologically effective method of treating and preventing constipation," says gastroenterologist W. Grant Thompson, M.D., professor at the University of Ottawa. And, I might add, when you're avoiding constipation you're also avoiding diverticulitis.
Slippery elm (Ulmus rubra). Dr. Weil suggests using slippery elm bark powder to treat diverticulitis. The fibrous bark contains large quantities of a gentle laxative that soothes the digestive tract while keeping things moving.
The Food and Drug Administration has declared slippery elm to be a safe and effective digestive soother. Prepare it like oatmeal, adding hot milk or water to the powdered bark to make a cereal.
Camomile (Matricaria recutita). British herbalist David Hoffmann, author of The Herbal Handbook, suggests sipping on camomile tea throughout the day. This herb is particularly valuable in treating diverticulitis because its anti-inflammatory action soothes the entire digestive system, he says. I suggest making a tea with two teaspoons of dried camomile per cup of boiling water. Steep for five to ten minutes.
Prune (Prunus dulcis). Prunes combine lots of fiber with a sweet, delicious taste. They've been a folk remedy for constipation for ages. If I had diverticulitis, I'd eat plenty of prunes or drink prune juice.
Wild yam (Dioscorea villosa). According to California herbalist Kathi Keville, author of The Illustrated Herb Encyclopedia and Herbs for Health and Healing, whom I highly respect, wild yam helps relieve the pain and inflammation of diverticulitis. I like her formula: two parts wild yam, (anti-inflammatory and antispasmodic), one part valerian (relaxing digestive tract soother), one part black haw (antispasmodic) and one part peppermint (anti-inflammatory and antispasmodic).
If I had diverticulitis, I might use a couple of tablespoons of this herb mixture brewed in a quart or so of water.