San Antonio Chapter

Gardening Tips, Hints and Hacks September 2023

If you’ve been gardening for any amount of time, you have probably discovered practical gardening practices that work for you here in Central Texas.  We’d love for you to share them with us!  In coming newsletters, we’ll select and share one or two submissions.  Please help us make this new monthly feature a success by sending your submissions to sanantonio@npsot.org.  Be sure to include your name, fully describe the gardening tip, and possibly include an illustrative photo.

Poor Person's Rescue Drip Waterer

If you have a new plant (or any plant that otherwise needs a little extra, consistent watering), you can easily provide supplemental water by using an empty plastic jug.

Sturdier jugs such as vinegar jugs last longer, but the thinner milk jugs work fine as a short-term fix. Use a large needle, an icepick or other sharp tool to make a small hole near the bottom edge of the jug. Fill with water, replace the lid, and set next to the plant, positioning the jug so that the hole is closest to the plant.

After the jug is positioned, be sure to loosen the lid so that air can enter; otherwise a vacuum will be created, which will stop the drip before the jug is empty.

You may need to experiment with the appropriate hole size to get the “perfect” drip, but even if the jug empties within a couple of hours, the slow watering is beneficial and will generally get deeper without run off than a short deluge with the hose.

(Submitted by Todd Phillips)

Gardening Challenge:

Reader Answer! Jay Collins says, “Regarding the newsletter question about suppressing root sprouts from possumhaws, I have not had that problem and I have several.

The only time I see new sprouts coming from the roots has been when the health of the tree is compromised (it is old, it becoming too shaded, etc.) and the upper branches are dying.”

Rescue Drip Waterer
Photo by Todd Phillips

About the Region

2026 Fall Symposium Logo

This low-elevations region of Texas extends inland from the barrier islands, about 60 or so miles, and stretches from Brownsville to Louisiana. In total, it covers about 9.5 million acres, with a high point of 150 feet in elevation. More than 1000 species of plants can be found in this region. On the southern end, species more common in Mexico (such as Sabal mexicana) and Central America occur.

The barrier islands provide us with dune systems, and clay flats to the inland side, which have species found in these areas alone. Many plants here, such as Ipomoea pes-caprae (beach morning glory), can be found throughout tropical regions of the globe. I’ve encountered the same species on the beaches of Guam.

Once inland, vast marshes and wet prairies occur. Occasionally, oak (Quercus fusiformis) groves can be found. Common grasses include species of Bothriochloa, Paspalum, and Sporobolus; eastern gamagrass (Tripsacum dactyloides); and switchgrass (Panicum species). Many rivers and creeks cut through the Gulf Prairies, and along these riparian areas various species of trees, Sabal minor, and other plants adapted to clay soils can be found. Due to overgrazing, farming, and fire suppression, woody species such as mesquite (Prosopis glandulosa) and huisache (Acacia farnesiana), and invasive species such as chinaberry (Melia azedarach), Brazilian pepper (Schinus terebinthifolius), and Chinese tallow (Sapium sebiferum) have increased and displaced our native flora.

Source: Wildflowers of Texas by Michael Eason