My garden would be a totally different place if I had to do it with what was available to gardeners of that day. I don't have a lot of space. My house, garage and parking pad take up almost half of the roughly 10,000 square feet of my small urban lot. When you take out the patio, sidewalks, paths, and grudgingly kept lawn areas, there is very little left to garden in and all of that is in some degree of shade. Much of that shade is created by mature trees that suck the moisture out of the sandy soil. I make up for this by using techniques, equipment and plants that were not available in 1900. Much of my garden is in containers in places where I can't garden in the ground.
Today we have containers made of materials that became available only a few short years ago. They come in many sizes, shapes, colors and textures and even the largest can be lightweight enough to handle easily (before they are filled and watered!). I use them in many places in the yard where little else will grow without great effort on my part. At one rear corner of the house where a 60 foot arborvitae shades and starves the ground, I have a collection of faux terracotta containers of varying heights that spill with greenery, shade-loving bedding annuals and tropical species that are winter houseplants. The other corner, having no balancing tree, but most of the area's sparse sun has another collection of planters. This group is larger, taller and more varied for balance. It also gives me greater range with the plants used. More planters are arranged at the bases of trees, for variation and height in flower borders and marking every transition from alley to yard, from my yard to the neighbors', from backyard to the front. There are some on the patio, the porch, the steps, the railings. Real terracotta cannot safely be left outside here. The freezing and thawing would ruin it either quickly or over time. Even dense concrete is not forever here. That makes taking the containers in mandatory. I'm so glad they are plastic now.