The quickest way for most is to look at the leaves/needles. Coast Redwood needles look more like a fir tree - flat and extending from a central spine. Coast Re

The quickest way for most is to look at the leaves/needles. Coast Redwood needles look more like a fir tree - flat and extending from a central spine. Coast Redwood cones are about the size of a small marble, about the diameter of a fingernail. Giant Sequoia needles look more like cypress or juniper - strings/ropes of needles. Giant Sequoia cones are about the size a large chicken egg yolk. Dawn Redwoods are native to China, previously thought extinct and only recently (1940s?) discovered to be living. Their leaves look more similar to Coast Redwood. I have no idea how common they are in cultivation/landscaping. Forgive the hotlink...to an image [0]. Image Source [1] [0] https://landscapeplants.oregonstate.edu/sites/plantid7/files/plantimage/se-se-gi2.jpg https://landscapeplants.oregonstate.edu/sites/plantid7/files... [1] https://landscapeplants.oregonstate.edu/plants/sequoia-sempervirens https://landscapeplants.oregonstate.edu/plants/sequoia-sempe...