Everyone loves winecup

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Everyone seems to like the winecup. This Texas native is a favorite along highway rights-of-way and on wildflower trails, as well as in home gardens.

Callirhoe involucrata

The showy red-purple blossoms appear during mid-spring and into early summer. True to their name, from the side the flowers look like a goblet filled to the brim with red wine. The flowers are typical of the mallow family, with five wide petals surrounding a column of multiple yellow stamens. Leaves are deeply lobed with five to seven narrowly digitate segments.

The most common winecup species is Callirhoe involucrata, which is widespread all across Texas, except in the far- northeastern and the far-western parts of the state. This is the species commonly grown in gardens of our area. It is a sprawling plant, usually under a foot tall, with trailing stems up to 18 inches long. Its trumpet-like root tuber ensures it to be a drought-resistant and faithful perennial. Some gardeners use this winecup as a groundcover. A variety of this species has pure white or white with purple-striped petals.

Two other species of winecup grow on the Edwards Plateau, C. pedata and C. leiocarpa, both of which are called standing winecup. These almost-identical species are erect plants, one to three feet tall. C. pedata has a thickened taproot and is a perennial. The other species is an annual.

Winecups tolerate a variety of soil types, but prefer soils that are well drained. They grow in dappled shade to full sun.

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About the Region

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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