Unusual galls on bluberry shoots
I have two young blueberry plants of one variety and two young plants of a different variety. One variety set fruit this year, but the other variety set almost no fruit. Yesterday I noticed unusual growth lumps on the variety that did not set fruit. What are the lumps. Is it a disease of some type and should I trim them off, or treat them in some way? There is a lump on the end of about every branch on the one bush.
Ottawa County Michigan