I should have been more specific. It doesn't necessarily help keep asparagus longer, but it's convenient for keeping it upright with the bottoms in water. I know that can be done in a glass, but I always knock them over. So the lid on the herb keeper is nice.That being said, we love asparagus in my family, and I buy fresh asparagus at least 3 times a month, so it seems I always have it in my fridge and the herb keeper really has helped in keeping the asparagus fresher, longer..
Had a guest buy it. She was so excited with it that she started texting me daily reports, "Day 8, still fresh and looking good!", etc. From what I recall, her cilantro thrived for 13 days in the herb keeper.