

Someone told me this tree in my backyard is an Oleander, and that it is toxic.
They said every part, leaves, flowers, sap, and roots.
They told me it contains cardiac glycosides and to keep pets/kids from chewing debris, avoid sap exposure, wash hands after pruning, and not to compost trimmings into edible garden beds.
Is this a toxic tree? My 4 yo plays with the fallen flowers all the time!