Boerne Chapter

October 2009

NICE! Plant of the Month

(Fraxinus texenis)

Green tree branches hanging over white brick wall
Photo submitted by Boerne Chapter

Family: Oleaceae (Olive Family)

Type: Small deciduous tree.

Natural Habitat: Rocky slopes and lakeshores in Central and North Central Texas.

Growth: 30-45 feet in height, space 20-30 feet apart.

Deer Resistance: Cage trees.

Wildlife: Many species of birds and small mammals feed on the seeds, which are produced in abundance. It is a host plant to the tiger swallowtail butterfly.

Light Tolerance: Part shade to full sun.

Flowers: Very small, purple, in small branching clusters; male and female separate; appear with the leaves in March.

Fruit: About 1 inch long, single long wing off the end of each seed.

Leaves: Beautiful fall colors: leaves turn yellow, bronze, copper, pumpkin, tangerine, plum, mauve, dusty rose, and lime. One author says the tree looks like a candle flame in the fall. The leaves are pinnately compound, 5-8 inches long; smooth edges.

Water Requirements: This is our most drought tolerant ash.

Soil Requirements: Sand, loam, clay, caliche, limestone, well-drained.

Maintenance: This is our most drought tolerant ash!

Planting Instructions: Space plants 20-30 feet apart. Dig a hole at least two times wider than, but the same depth as the root ball in the nursery container. Sides of the hole should be irregular, not smooth. Remove plant from container, taking care to support the root ball. Loosen exterior roots gently with your fingers. If the plant is root-bound and cannot be loosened by hand, the outer roots may be cut in several places. Lift the plant by the root ball and place into the hole. Backfill hole, using soil that was dug out. Do not add any soil to the top of the root ball. Gently firm the soil with your hands, but do not tamp it down. Place 3-4 inches of mulch over the bare soil around, but not touching the base of the plant.

Watering Instructions after planting: Water deeply after planting to settle soil around roots. Then every 7-10 days, as needed, during the first growing season. Before watering, check for soil moisture at a depth of an inch or two at the edge of the root ball. Skip a watering after a rainfall of ½ to 1 inch. Maintain this watering schedule until the first fall. Reduce watering during the cool fall and winter months. In a “normal” year, no watering may be necessary during the fall and winter, but during a dry period, monthly watering may be needed. Second Spring and thereafter: Water monthly only during periods of drought. Once established, natives will survive with little supplemental irrigation.

NICE! Tip: This is one of our best shade trees. Texas Ash has strong, hard wood and is fairly fast growing, yet strong and healthy. Arizona Ash Franxinus velutina and Mexican Ash Franxinus berlandieriana are more frequently planted, but need more water and do not have the fall colors of Texas Ash.

Look for the NICE! Plant of the Month signs and information sheets on your next visit to a participating Boerne nursery. And thank you for supporting native plants by using them in your landscapes.

About the Region

Fall Symposium 2025 Logo - Teach for the Future

Salado, the location of our Fall 2025 Symposium, lies at the intersection of two ecoregions: the Edwards Plateau (Limestone Cut Plain) and Blackland Prairie (Northern Blackland Prairie).

The Edwards Plateau area is also called the Hill Country; however, this general term covers a much larger area extending farther north. Spring-fed creeks are found throughout the region; deep limestone canyons, rivers, and lakes (reservoirs) are common. Ashe juniper is perhaps the most common woody species found throughout the region. Additional woody species include various species of oak, with live oak (Quercus fusiformis) being the most common. Sycamores (Platanus occidentalis) and bald cypress (Taxodium distichum) border waterways. This area is well known for its spring wildflower displays, though they may be viewed in spring, late summer, and fall, as well. According to Texas Parks and Wildlife, average annual rainfall in the Edwards Plateau ranges from 15 to 34 inches.

The Blackland Prairie extends from the Red River south to San Antonio, bordered on the west by the Edwards Plateau and the Cross Timbers, and on the east by the Post Oak Savannah. Annual rainfall averages 30 to 40 inches, with higher averages to the east. This region is dominated by prairie species. The most common grass species include little bluestem (Schizachyrium scoparium) and Indian grass (Sorghastrum nutans) in the uplands and switchgrass (Panicum virgatum) in the riparian areas and drainages. Common herbaceous flowering plants include salvias, penstemons, and silphiums. This area has suffered greatly from overgrazing and agricultural use. Few intact areas remain, though many of the plants can be found along county roadsides throughout the region.

Our fall Symposium host chapter, the Tonkawa Chapter, includes both of these ecoregions.

Source: Wildflowers of Texas by Michael Eason