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Horticultural Calendar for San Antonio, Austin and Surrounding Areas

Spring 2026

The El Niņo is coming back.
see more at:
https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/enso_evolution-status-fcsts-web.pdf
&
https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/ensodisc.shtml


If our droughts are cyclical, we expect this multi-year drought to end by 2028.

July
Week 1 -
Irrigate lawns only when grass blades first show signs of wilting in the morning. Apply 1/2-inch to 5/8-inch of water on each of two consecutive mornings to encourage deeper roots in our clay soils. If you water once a week during a prolonged drought (as the municipal water monopolies recommend), you'll promote shallow roots.

Cut back and discard foliage of west Texas Columbines. Do not compost leaves infested with leaf miners or spider mites.

Still time to sow Okra for summer and early fall production.

Week 2 -
Eradicate web worms when their nests are small. Use a product containing "Bt" (Bacillus thuringiensis).

Make sure your sprinkler system is not skipping a station or provides inadequate coverage.

Remove and discard all fruits from Catalpa, Paulownia and Trumpet Vine.

Protect ripening Figs, Grapes and Pomegranates from bird damage with netting, inflatable snakes, attack cats, owls, etc.

Week 3 -
Don't enrich your municipal water monopoly. Water most plants deeply on the day before they would have wilted.

Plant Asters, Firebush, perennial garden Mums, Salvias, etc. for fall bloom in sunny sites.

Water shady beds of English and Algerian Ivy only when their leaves first start to wilt.

Transplant: Eggplant, Peppers (both hot and sweet) and Tomatoes into prepared fall garden beds, in the evening. Keep them moist for two weeks.

Week 4 -
This is a good time for pruning Live Oaks and Red Oaks. Use a tree-wound dressing if you live near sites with Oak Wilt.

The driest time of the year is the best time to paint and reseal wooden outdoor furniture, decks and fences.

Feed Waterlilies with additional Agriform 2-year fertilizer tablets. Place them where fish or frogs cannot unearth them.

A black sooty mold on leaves is evidence of sucking bugs excreting honeydew. Kill those suckers with the least toxic, yet effective insecticide.


August
Week 1-
It is normal for Live Oaks, Loquats and Magnolias to be dropping some leaves when it is hot & dry.

Feed clumping bamboos with slow-release, 15-5-10 lawn food and water regularly during their summer growing period.

Make sure your sprinkler system does not water the street, sidewalks or driveways.

Fertilize summer-blooming perennials lightly with 15-5-10. They will need water afterwards.

Finish transplanting Tomatoes, Peppers and Eggplant for fall production.

Even cacti and succulents in the landscape need to be watered if it is dry.

Try to work in the garden between 6:00 AM and 9:00 AM. Drink at least one glass of water (not carbonated or caffeine- or alcohol-containing products) each hour while working.

Week 2 -
Cut back Poinsettias and pinch back the subsequent growth once.

Pinch shoot tips on Mums and Asters.

It isn't just drought-stress, chinch bugs could be damaging your turf.

Don't let your fall vegetable transplants wilt; keep them watered and growing vigorously.

Use your oak leaf compost as a mulch around shrubs or vegetables.

Build raised beds, in full sun, of acidic materials (decayed granite, glauconite (green sand), red sand and pine bark soil conditioners) for Strawberries.

Keep Chayote and Luffa vines well-fed and healthy. They'll start blooming in a few weeks.

Week 3 -
Begin minimal pruning of Hybrid Tea Roses. Feed with a slow-release fertilizer.

Finish sowing: Bush Lima Beans, Sweet Corn, Cucumber and Winter Squash.

Order wildflower seeds and sow as soon as they arrive.

Even if you see Pansies offered for sale, please resist. They should not be planted until mid-October.

Transplant: Broccoli, Cabbage, Cauliflower and Potato.

Languishing spring-blooming perennials may be cut back and divided. Replant immediately and water them deeply.

Remove fire-blight-affected branches from Cotoneaster, India Hawthorn, Pear, Photinia and Pyracantha. Sterilize pruners between each cut in a chlorine bleach & water solution.

Week 4 -
The optimal FALL PLANTING SEASON starts in three weeks!

Sow: Cucumbers and Summer Squash.

Finish summer pruning of Oak-Wilt-susceptible Live Oaks and Red Oaks.

Remove some of the barren branches from female hollies so berries will be more prominent when they turn red.

Nurserymen are now returning from their huge, annual trade show. Look for new products and plants in the next few weeks.

Start sowing flowering winter annuals, such as: Allysum, Calendula, Larkspur, Poppy and Stocks.




The botanical images on this site were produced by The Photon Hunt.

Thank you for visiting!,
,,,

seasonal notes


Please remember to water your trees and shrubs deeply at the drip line (with a root-feeder probe or soaker hose) every two weeks during the growing season.  Groundcovers, perennials and other shallow-rooted plants should be watered deeply every week in the absence of substantial rainfall.

The on-going La Niņa drought necessitates this intervention.  Topsoil and subsoil are very dry and their survival will be dependent on supplemental  irrigation.

As this cyclical drought progresses and the Comal Springs look like they did in early 1956, the usual suspects will again be asking you to let your landscape suffer or die, to protect the "critters". Those eco-nazis, radical environmentalists, politicians beholden to "downstream interests," and other bed-wetting sissies will neglect to inform you that the "critters" will not suffer irreparable harm. The current Comal Springs population of Fountain Darters was reintroduced from individuals kept at the federal fish hatchery. The Gambusia were illegally reintroduced from the San Marcos Springs population, and the Blind Salamanders will again retreat into the safety of the Edwards Aquifer.

If you read the local paper, listen to for-profit media outlets, or Government Radio (NPR), please disregard their propaganda.  If the "downstream interests" wanted to keep Comal Springs flowing, they could restrict the spring openings to restore their natural state before they were blasted open in the 19th century.  They could also recharge the aquifer with treated wastewater where the Cibolo Creek intersects the recharge zone as well as at Hueco Springs (when they are not flowing).

If they bring up the subject of Texas Wild Rice, let them know it is not endemic to Spring Lake and its surroundings in San Marcos.  This species actually has three known natural habitats - San Marcos River, along the Trinity River (about 100 miles N of Houston). and along the Pearl River in southern Mississippi.  Scientists who feed at the federal trough (the human parasites of endangered species) will swear that Texas Wild Rice is a submerged aquatic plant whose survival requires millions of gallons of spring water of precise chemical composition and temperature.  However, those who have cultivated this species for decades will tell you it is an invasive weed that thrives in shallow water and moist banks.  Under such care, it grows to 10-12' high and flowers consistently from July until first frost and sets abundant seed.  It is a marvel of adaptation that it can even survive as a submerged aquatic.  A federal recovery plan reported that Texas Wild Rice once choked the irrigation ditches downstream from Spring Lake.  Also, a now defunct retail nursery in Austin sold container-grown Texas Wild Rice in the 1990s.


.Tropicalaaaaaa

 
Copyright at Common Law by Manuel Flores