Ask Mr. Smarty Plants

You didn’t mention the size of your courtyard, and based on the inventory of existing plants that you gave, I think that I should mention that the mission of the Ladybird Johnson Wildflower Center is to increase the sustainable use and conservation of native wildflowers, plants and landscapes. Both of these factors would influence Mr. Smarty Plants’  recommendations.

Let’s address tree placement and spacing first. The Texas Tree Planting Guide that is produced by the Texas Forest Service is just full of information about planting trees. A particularly useful feature  is the Tree Planting Tools . The  articles “How Big Your Tree Will Grow”, and “Planning Your Available Space” should be useful. This link to City of Houston Parks and Recreation Dept. also deals with spacing problems (scroll down to WHERE TO PLANT.

As for tree selection, I’m including two links to two guides from the New Mexico State University Cooperative Extension Service: “Shade Trees for New Mexico”  has tips about tree selection and planting, and tree care. It contains a list of trees with both scientific name and common names. It also has information about water use, allergy potential, growing zone selection and planting criteria, potential problems, and height. The other guide, “Selecting Ornamental Trees for New Mexico” has a similar format, but the list of trees is longer.

Another tool to use for tree selection is our NPIN Database . Scroll down to the Combination Search Box and make the following selections; select New Mexico under State,  tree under Habit, and perennial under Duration. Check sun under Light requirement and dry under Soil moisture. Click on the Submit Combination Search button, and you will get a  list of 48 native trees for New Mexico landscapes. Clicking  on the scientific name of each plant will bring up its NPIN page which contains a description of the plant, its growth characteristics and requirements, and in most cases images.

Another way you can use the database is to get more descriptive information and images of plants that you find in the NMSU guides. Type the name of a plant from the guides in the appropriate space in the green box labeled Search Native Plant Database and click the go button. This will bring up the NPIN page for that plant.

With a perseverance, you should be able to come up with the perfect plant for your court yard. For some help closer to home, you might contact the folks at the Dona Ana County office of NMSU Cooperative Extension.