In a new section of my garden bed, I have an assortment of sunflowers with Morning Glories growing up them. Tonight, on my "slug hunt" I noticed a deformity on two of the sunflowers.

About mid stem, (1foot from ground) there are three lumps in a row inside the stem. It looks like a row of lima beans in the stem. One sunflower has three lumps and the second one has just one lump. Is this normal?

Thanks for your thoughts,

Sue