Loquat tree (Eriobotrya japonica)
Our loquat tree has some suckers coming up from the base of the trunk. The leaves are a different shape. Does that mean the plant was grafted onto the rootstock of a different plant? I can't see the telltale "bulge" of a graft.
Is your tree near a boundary? The plant growing up looks like a runner from another plant. Looks a bit like Celastrus Orbiculatus, Oriental Bittersweet. Can be a shrub or a climber. I doubt it is a grafted plant.
Thanks for your suggestion. There aren't any nearby shrubs with that oval leaf, and the suckers are definitely attached to the woody trunk of our tree. On close examination, it may be grafted after all. 🤔 Think I'll just remove them, but try potting one up as a hardwood cutting and see what it turns out as! Perhaps a Celastrus 🙂