Rooted in Research: A Guide to Successful Gardening the San Antonio Area

Bexar County Master Gardener Association

Gardening in San Antonio can be challenging because of our diverse clay based soils, our water and our climate. Rooted in Research: A Guide to Successful Gardening the San Antonio Area speaks to our unique challenges gardening using research based-locally relevant information. The first podcast of each month will give ideas on what to do each month, list gardening educational opportunities, and an aspect of our unique gardening conditions will be featured each month. A second podcast each month will focus on one specific topic such as selecting plants, composting, mulches, etc

Episodes

  1. Growing Herbs with Linda Cace

    15 MAR

    Growing Herbs with Linda Cace

    This podcast is a recorded conversation between Bill Swantner and Bexar County Master Gardener, Linda Cace, who has advanced training in Herbs. How to grow herbs and 5 herbs for every beginner to try. ________________________________________ Bexar County Master Gardeners (BCMG) Links: Bexar County Master Gardner Website BCMG Gardening Question Helpline: 210-631-0400Follow BCMG on FBResearch and Podcast Notes / Links to further research : Book: The Tea Garden: A Guide to Planting, Harvesting, and Enjoying Your Teas, by Victoria W Williams___________________________________________________________ Linda’s Top 5 Herbs for a new garden in San Antonio: Curly & Flat Leaf ParsleyPeppermint (Herba Buena)Ginger MintLemon BalmBasilTexas Superstar® Herbs: Barbecue Skewer Rosemary‘Balsamic Blooms’ BasilVocabulary Words: Decoction - a method of extracting active components from hard plant materials—such as roots, bark, seeds, and stems—by boiling them in water to produce a concentrated liquid. TX Gardening & Educational Events: Spring Plant SaleAt the San Antonio Garden Center3310 N New Braunfels AveSaturday, March 21, 20269am-4pm Dig It! Gardening Series (presented by San Antonio Public Library & Bexar Co Master Gardeners)mysapl.org/events Dig It: Spring Into Landscape GardeningSunday, March 15, 20261:00-3:00pmDenver Heights Community Center300 Porter StreetSan Antonio, TX 78210 Dig It: Spring Into Landscape GardeningSaturday, March 21, 20261:00-2:00pmPruitt Library Dig It: Pollinator GardeningSunday, March 22, 202610:00-11:00am Semmes Library Dig It: Texas! It’s a Whole ‘Nuther CountryMonday, March 23, 20261:00-2:00pmIgo Library Dig It: Texas! It’s a Whole ‘Nuther CountryTuesday, March 24, 20266:00-7:00pmWestfall Library Dig It: Texas! It’s a Whole ‘Nuther CountryThursday, March 26, 20262:00-3:00pmMemorial Library Dig It: Spring Into Landscape GardeningSaturday, March 28, 20261:30-2:30pmPan American Library Dig It: Pollinator GardeningSaturday, March 28, 20263:30-4:30pm Johnston Library Dig It: Succulents: Nature’s Water-Saving WondersSunday, March 29, 20261:00-2:00pm Tobin Library Beyond the Garden: Basics of Food PreservationTopic: Water Bath & Fermentation  Wednesday, March 18, 20261:00-4:00pmBexar Country AgriLife Urban Farm1615 ShermanSan Antonio, TX 78202($50 Registration Fee) Radio: Saturday Mornings Lawn & Garden Show 6am-9am on WOAI (1200 News Radio AM) Call in: 210-737-1200 or 1-800-383-WOAI Email Karen: karenclauss@iheartmedia.comEmail David: dhrodriguez@ag.tamu.eduFollow on FB / Follow on IGPodcast: Bugs By The Yard

    23 min
  2. 15 FEB

    Growing Tomatoes in Bexar County

    Horticulture agent for Bexar County, David Rodriguez, gave a presentation at the San Antonio Botanical Gardens on growing tomatoes in Bexar and surrounding counties; determinate- indeterminate, how to grow & protect. In addition, David gave a history of the Rodeo tomato and announced the 2026 Rodeo tomato- Polbig. _______________________________________________________________ Bexar County Master Gardeners (BCMG) Links: Bexar County Master Gardner Website BCMG Gardening Question Helpline: 210-631-0400Follow BCMG on FBResearch and Podcast Notes / Links to further research : The Rodeo Tomato Polbig Rodeo Tomatoes and How to Grow Them - VideoTomato Basics 101 - Video History of the Rodeo TomatoRodeo Tomato for 2021 - Ruby Crush David’s Tomato Planting Recommendations:  Pot up in February, up to the CotyledonUse 6” diameter for first 30 days, 12” nursery container second 30 daysUse premium peat based potting mixMassage the roots and open them up Water thoroughly once pottedMulch double shredded hardwood mulch to protect (don’t apply until May)Use tomato cages once in final growing spotInsulate the tomatoes with white cloth to protect from night time weatherRemove the insulate when the plant reached 2/3 up the cage  Recommended large-fruited tomato varieties include: BobcatCelebrityHarris Moran 8849Sunbrite (semi-determinate)TycoonValley Cat   Red SnapperRecommended small/cherry-type tomato varieties include: Ruby Crush – SA Rodeo TomatoBHN 968 (semi-determinate) – SA Rodeo Tomato and Texas Superstar®Juliet (indeterminate) Vocabulary Words: F1 Hybrids: F1 hybrid is a term used in genetics and selective breeding. F1 stands for Filial 1, the first filial generation seeds/plants or animal offspring resulting from a cross-mating of distinctly different parental types. Insulate: White cloth insulation in gardening refers to techniques and materials used to protect plants from extreme temperature fluctuations, wind, and frost, or to keep soil cooler/warmer to improve plant health. Solanaceae Family: (or nightshades), is a large group of over 2,700 plant species, including common edible crops like potatoes, tomatoes, eggplant, and peppers.   TX Gardening Educational Events: CULTIVATE! (Free online sessions)Friday-Saturday, March 6-7, 20269am-1pmFriday, March 69:00-10:00am Everything You Learned About Gardening is Wrong! | Greg Grant10:30-11:30am Creating a Thriving and Colorful Landscape in Spite of No Rain | David Rodriguez 12:00-1:00pm Making the Most of the Rain | Lee Marlowe Saturday, March 7, 2026 9:00-10:00am Perennial Pleasures: Texas Superstars | Lynn Cox 10:30-11:30am Dinner and a Blanket | Bill Swantner 12:00-1:00pm Let’s Take the Guess Work Out!: Efficient Landscape Watering | Lynn CoxRadio: Saturday Mornings Lawn & Garden Show 6am-9am on WOAI (1200 News Radio AM) Call in: 210-737-1200 or 1-800-383-WOAI Email Karen: karenclauss@iheartmedia.comEmail David: dhrodriguez@ag.tamu.eduFollow on FB / Follow on IGPodcast: Bugs By The Yard

    38 min
  3. 15 JAN

    Successfully Growing Vegetables from Seed

    Karen Gardner is an exceptional extension certified Master Gardener and she grows all of her vegetables from seed. In this podcast she will take you step by step on how to successfully grow vegetables from seed from selecting seed, baking potting medium "soil", watering, "ferti-gating", lighting, potting up and harvesting. __________________________________________________________Bexar County Master Gardeners (BCMG) Links: Bexar County Master Gardner Website BCMG Gardening Question Helpline: 210-631-0400Follow BCMG on FBResearch and Podcast Notes / Links to further research : Link: Timely Tips on Starting Seedlings at Home Link: Common Seed Starting Mistakes and How to Avoid ThemLink: Media, Repotting & Containers Link: Seed StartingLink: Saving Seed of Hybrid Varieties-Once Not Recommended; Now Encouraged Karen Gardner’s Recommendations for Seed Starting1. Buy seeds from a reputable source 2. Make your own potting mix 3. Bake your potting mix to remove pathogens 4. Sterilize your pots 5. Water from the bottom or spray bottle misting 6. “Fertigate”7. Use heat mats at temp ranges for starting seeds 8. Add lights 2” above plants 9. When big enough, pot the seedlings up to a larger size pot Karen’s Custom Potting Soil Mix: • Coconut Croix • Peat Moss • Vermiculite Seed Start Vocabulary Words: Cotyledon: A cotyledon is a "seed leaf," the first leaf-like structure to emerge from a germinating seed, providing initial nutrition and energy to the seedling before its true leaves develop, with plants classified as monocots (one cotyledon, like corn) or dicots (two cotyledons, like beans) based on their count, often serving as food storage or becoming photosynthetic to support early growth before withering away. True Leaves: True leaves are the second set of leaves to grow on a seedling, appearing after the initial cotyledons (seed leaves) and resembling the mature plant's leaves, signifying the plant can now photosynthesize and produce its own food, a key milestone for transplanting or fertilizing. Treated Seeds: Treated seeds are seeds coated with protective substances like fungicides, insecticides, or biologicals to shield them from pests and diseases in the soil, enhancing germination and crop establishment, often with a bright color for warning, but require careful handling to avoid environmental contamination or accidental consumption, as they are a significant pesticide delivery method in agriculture. Untreated Seeds: Untreated seeds are seeds that have not been coated with any synthetic chemicals or biological agents for pest/disease protection. Pelleted Seeds: Pelleted seeds are tiny or irregularly shaped seeds coated in an inert material (like clay) to make them larger, round, uniform, and easier to handle, see, and plant.  Hybrid Seeds: Hybrid seeds are created by cross-pollinating two distinct parent plants, combining their best traits (like high yield, disease resistance, or flavor) into a superior first-generation (F1) offspring, though seeds saved from them won't grow true to type.  GMO Seeds: Plants whose DNA has been altered in a lab to add new traits, like pest or herbicide resistance, creating characteristics not possible through traditional breeding. “Fertigate”: It's a portmanteau of "fertilizer" and "irrigation," essentially "watering and feeding plants at the same time". Combine fertilizing and irrigating by adding soluble fertilizers directly into the irrigation water, delivering nutrients efficiently to plant roots through drip, sprinkler, or surface systems, saving time and water while increasing nutrient uptake. TX Gardening Educational Events: Saturday, Jan 31, 2026 9am-12pm: Pruning Fruit Trees at Fanick NurseryRadio: Saturday Mornings Lawn & Garden Show 6am-9am on WOAI (1200 News Radio AM) Call in: 210-737-1200 or 1-800-383-WOAI Email Karen: karenclauss@iheartmedia.comEmail David: dhrodriguez@ag.tamu.eduFollow on FB / Follow on IGPodcast: Bugs By The Yard

    40 min
  4. 1 JAN

    January Gardening Tips and Gardening in Clay Soil

    Gardening in Bexar County has its challenges. In this podcast we'll take a look things a successful gardener will be doing and avoiding. In addition, a calendar of learning events for local gardeners will given, and finally, we'll "dig deeper" into the challenges of gardening in our clay soils. This podcast is brought to you by the Bexar County Master Gardeners, Bill Swantner host. _______________________________________________ Bexar County Master Gardeners (BCMG) Links: Bexar County Master Gardner Website BCMG Gardening Question Helpline: 210-631-0400Follow BCMG on FBResearch and Podcast Notes / Links to further research : Link: Historical temperature and rainfall data in San Antonio historically - National Weather Service Link: Pruning: Basic Timing Advice for Trees, Shrubs, Perennials & VinesLink: International Society of Arboriculture’s “Find an Arborist” Page for the City of San Antonio Link: International Society of Arboriculture’s Texas Chapter “Find an Arborist”  Oak Wilt:  Link: Preventing Oak Wilt: TX A&M Bexar Co Extension Education ArticleLink: Texas Oak Wilt Management - Texas A&M Forest Service Garden Planning in January: Link: Dr. Steve George - Earth Kind Gardening  TX Gardening Educational Events: Friday, Jan 9, 2026 12-1pm: Rodeo Tomato Presentation at SABOTSaturday, Jan 31, 2026 9am-12pm: Pruning Fruit Trees at Fanick NurseryRadio: Saturday Mornings Lawn & Garden Show 6am-9am on WOAI (1200 News Radio AM) Call in: 210-737-1200 or 1-800-383-WOAI Email Karen: karenclauss@iheartmedia.comEmail David: dhrodriguez@ag.tamu.eduFollow on FB / Follow on IGPodcast: Bugs By The YardSoil Information: Link: General Soil Map of TexasLink: 4 Kinds of Soil in Bexar County Link: It All Starts with the Soil Link: Improving Clay SoilLink: Straight Talk about Iron Deficiency and PlantsTest your Soil PH & Nutrients with Texas A&MLink: Order your Soil Testing KitLink: Soil Testing Paper Form - Texas A&M LabEDDHA - Chelated Iron - The iron supplement needed for San Antonio’s High PH SoilsVegetable Planting Guide SA in January: Link: Recommended Vegetable Varieties for Spring Planting• Asparagus crowns: UC 157, Jersey Giant• Cabbage Transplant: Golden Acre: (red) Ruby Ball and Red Acre: (hybrids) Rio Verde, Market Prize, Green Boy, Stonehead, Cheers• Onion Transplants: Bulbing: Granex (yellow and white), Grano, Granex, Texas A&M 1015 Y; Texas A&M Supersweet: Red Burgandy, Crystal Wax; Green Scallions: Crystal Wax White Bunching• English Peas: Wando, Little Marvel• Pod Peas: (Grow on supporting structure) Sugar Snap, Sugar Daddy, Snappy, Sugar Mel• Radishes: Champion, Cherry Belle, Early Scarlet Globe; Winter: Black Spanish, White Chinese• Spinach Transplants: New Zealand, Malabar (Basella alba)• Tomato Seeds • Turnip Seeds: Purple Top White Globe, Just Right, Royal Globe, Tokyo Cross; Greens Feb 1 – Mat 20: All Top, Tyfon, Seven Top_______________________________________________

    30 min

About

Gardening in San Antonio can be challenging because of our diverse clay based soils, our water and our climate. Rooted in Research: A Guide to Successful Gardening the San Antonio Area speaks to our unique challenges gardening using research based-locally relevant information. The first podcast of each month will give ideas on what to do each month, list gardening educational opportunities, and an aspect of our unique gardening conditions will be featured each month. A second podcast each month will focus on one specific topic such as selecting plants, composting, mulches, etc