Of all the Official State Trees, the coastal redwood, Sequoia sempervirens, of California is the grandest. Seriously, it is the tallest tree in the World, so it really ‘is’ the grandest! The tallest is 380 feet tall! Although the related giant redwood of the Sierra Nevada develops bigger trunks, the bulkiest coastal redwoods are thirty feet wide at the base! The oldest are more than 2,000 years old!
All that sensationalism is not so practical for home gardens though. A thirty foot wide trunk on a sixty foot wide city lot would likely be a serious obstacle to gardening for whoever lives there 2,000 years from now. Although, those below the thirty-fifth floors of adjacent buildings might appreciate the foliage. Redwoods are exquisite evergreens in the right situations, but need plenty of space.
Cultivars are more compact than wild trees are, with more strictly conical form. ‘Soquel’ is the most popular. Redwoods are incredibly stable, but as they age, can eventually drop limbs from great height. Trunks are nearly vertical. Limbs are nearly horizontal, and sag with age. Leaves are less than an inch long, but messy as their flat browned tufts shed in abundance through late summer.