Is this armillaria coming up? This is where I planted a bulb I think it is dahlia I see something trying to come out. Is it likely to have come from the bulb or maybe I nick a root with shovel when planting. Only older tree that coul have roots here is a golden rain tree. Healthy, but I see they are resistant so maybe it can grow on roots. I hate to think I can get bulbs in the mail that are infected.