Ask Mr. Smarty Plants

You didn’t mention the type of Eucalyptus trees that you are trying, but Eucalyptus is a genus that is native to Australia. It was introduced into the US in California in the 1850’s and has been used by landscapers across the country. This previously answered question about growing Eucalyptus in Spring,Texas sort of sums up the Wildflower Center’s feeling about Eucalyptus in Houston. The answer contains some suggestions for alternative plants, but they all aren’t suitable for your current situation.

I will give you two suggestions to help you with selecting trees for your back yard.
The first is called the Texas Tree Planting Guide which is produced by the Texas Forest Service. This is an interactive website that will allow you to select trees based on your county, the size of the tree you want (both height and width), the overall shape of the tree, growth rate, etc. Using the Express Tree Selector and the Custom Tree Selector will give you a list of trees from which to choose.

Another source of information is the Houston Chapter of the Texas Native Plant Society.
Address: NPSOT-H, Box 131254, Houston, TX  77219-1254.
www.NPSOT.org/houston

One feature they have that I like is their NICE Program (Natives Instead of Common Exotics). See page 24.

The next stop would be our Native Plant Database. You can use the Recommended Species feature, or you can use the Database to check out the plants that you have selected from the lists that you compiled using the other sources. To look for Recommended Species, go to the Native Plants Database, and scroll down to the Recommended Species box. Click on “View Recommended Species Page” and select East Texas on the map. Go to the Narrow Your Search box and make the following selections: select Texas under State, tree under Habit, perennial under Lifespan, and 72 - 100 under Height. This will give you a list of six native species that meet these criteria. Clicking on the Scientific name of each species will bring up its NPIN page which gives characteristics of the plants, growth requirements, and in most cases photos.

To use the Database to check out the other plants on your lists, type in the Scientific name or common name of a plant in the space provided and click on the “go” button. If the plant  is a non-native however, it will not appear in the database.

Good luck with your selections.