How did this Redwood get in our backyard?

Not succulents. Just potentially big trees. This is a Coast Redwood (Sequoia sempervirens) in our back yard, outside our greenhouses. (The first picture includes a magnolia blossom.) The first owners of our house brought home a burl as a souvenir and planted it, and off it went. The bark, which is quite soft but very thick is a favorite of the squirrels, who take big chunks. These are just small samples, growing as tall as a 30 story building (115 meters) and living to the ripe old age of 2200 years in the coastal forests of Southern Oregon and central and northern California. They really are best in the forest, as they're a little messy as a landscaping tree...but, hey, we take what we get and...enjoy our plants!