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Boerne Chapter

January 2006

NICE! Plant of the Month

(Ilex vomitoria)

Bright red flowers in the foreground, a meadow and forest in the background. Cloudy sky.
Photo submitted by Boerne Chapter

Description:
Yaupon Holly may be grown as a multitrunked shrubby or single trunked small tree. It is native across the entire Southeastern US with its western range extending into central Texas. In the Hill Country it seldom reaches its potential height of 25 ft. being seen more often at maturity at approximately 15 ft. Yaupon is dioecious, with inconspicuous male and female flowers appearing on different trees in spring. Small ¼ inch drupes cluster tightly along stems of female trees and turn bright red in early winter. The fruit persist throughout the cold season. The glossy evergreen leaves are simple, alternate, oval to oblong, ½ to 2 inches long, and leathery to the touch with small rounded toothed margins. Relatively free of disease and insects. The fruits are poisonous to humans, but are consumed in late winter by birds. Cultivars include both fruitless dwarfs and yellow-fruited standard varieties. Most commercially available specimens are vegetatively reproduced females selected for abundant or vibrant colored fruit.

Deer Resistance:
Deer-resistant, but all trees need to be caged while small.

Planting Sites:
Yaupon is adaptable to all Hill Country soil types including caliche with poor to good drainage. It grows well in full sun, part shade or full shade of tall trees. Cold hardy. Yaupon is moderately drought tolerant once established, surviving on 24 inches or more of precipitation.

Planting Instructions:
Dig hole 2-5 times wider than, but the same depth as the root ball in the nursery container. Carefully remove plant from container, taking care not to break the root ball. Loosen exterior roots, if root bound. Refill the hole using removed dirt amended with no more than ¼ volume of compost. Do not add any soil to the top of root ball, but do apply 2-3 inches of mulch over the disturbed soil area and root ball up to within 1-2 inches of trunk.

Watering Instructions:
Water in well during planting. An organic-based root stimulator, used according to product directions, may be applied. Repeat watering a few days after planting. Thereafter, water deeply every 7-10 days, after checking an inch or two into soil at edge of root ball to determine soil moisture. Skip a watering after a rain of ½ to 1 inch. Maintain this watering schedule until the first fall after planting. Reduce water during fall and winter. In a “normal” year, no watering may be necessary in fall and winter, but during a dry period, monthly watering may be desirable.

NICE! Tip:
The caffeine-rich leaves may be heat dried and used to make tea. Evergreen Yaupon Holly has a dense branching structure that makes it ideal for screens or as specimen plants. It responds well to training into any shape.

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.

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About the Region

New Braunfels, the location of our Fall 2024 Symposium, straddles both the Edwards Plateau Ecoregion and the Blackland Prairie ecoregion. Interstate 35 divides the city of New Braunfels; its path through the city closely parallels the boundary of these two ecoregions, with the Edwards Plateau on the west side and the Blackland Prairies region to the east. 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 four host chapters (New Braunfels, Lindheimer, Guadalupe, and the Hill Country chapters) are located in one or both of the ecoregions above. However, the eastern portion of Guadalupe County also falls within the Post Oak Savanna ecoregion. Annual rainfall averages 35 to 45 inches, with higher averages to the east. A wide variety of hardwood trees are found, including several species of oaks, elms, and in the Bastrop area, loblolly pine (Pinus taeda). Grasses and forbs dominate in the open savannas, with most common grass being little bluestem. Ranching, agriculture, and fire suppression have allowed woody species to encroach on the once-open savannas.

Source: Wildflowers of Texas by Michael Eason