Howard Garrett has extensive experience in natural organic landscaping, greenhouse growing, golf course planning and maintenance, and natural organic product development. He provides advice on natural organic gardening, landscaping, pet health, pest contr
The June 6, 2026, Dirt Doctor Podcast with Howard Garrett answers questions sent in by podcast listeners and web site readers to the Dirt Doctor site's "Ask Howard" feature. Lots of questions that came in that way this week, including photos from a listener. He also discusses the Dirt Doctor "Guides" and the reason for several formulas for his Tree Trunk Goop to restore injured trees. Finally, there are tips on safety when working with products like hydrogen peroxide.Show Notes:SPCA dogsPoison HemlockHydrogen PeroxideSick Tree TreatmentTree Trunk Goop formulasPecan Tree Program Pest control via tomato foliage teaNightshade familyScorpionsGardening Tools (Hori Hori knife)Calendar and Dirt Doctor GuidesPublic speaking eventsGarrett JuiceAlmond VerbenaTurks CapEFI Newsletter (https://essentialformulas.com/newsletter-subscription/)Book availablityCheat SheetAdvertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.com
The May 30, 2026, Dirt Doctor Podcast with Howard Garrett answers a few questions sent in by listeners and readers to the Dirt Doctor web site's "Ask Howard" feature. The bulk of the podcast is a discussion of the books he has written to do with landscape design and organic gardening. He updated the current status of the "Cheat Sheet" list of tips he used when he was on the radio show and has continued to enlarge. Show Notes:SPCACheat SheetEssential Formula newsletter recommendationAxis deer (chital) venisonFermented foodsGinkgo tree planting in summerHistory of Howard Garrett booksAdvertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.com
The May 23, 2026, Dirt Doctor Podcast with Howard Garrett continues with answering questions sent in by listeners and readers to the Dirt Doctor web site's "Ask Howard" feature. Guest on Interview from EarthX: Michelle - Rebel with a Rake (https://www.instagram.com/rebelwitharake/)Advertisers:Douglass King Seed https://www.dkseeds.com/Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.com
The May 16, 2026, Dirt Doctor Podcast with Howard Garrett continues with answering questions sent in by listeners and readers to the Dirt Doctor web site's "Ask Howard" feature. This week covers his continuing sale of art from the former office and gallery space and a discussion of the evolution of the "cheat sheet" of helpful answers that was an appendix of a new (yet unpublished) book. He also discussed ants, fleas, flatworms, setting fruit on squash, and the use of sulfur. Find these subjects and more in this week's podcast. Guest on Interview from EarthX: Lucas EvansAdvertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Q&ALemon balm and hibiscus flowers in teaMore art for sale after estate saleCheat sheetPlanarian wormsAnts in treesSick tree treatmentfleassetting fruits on squash plantssulfur
A wide-ranging set of questions came in last week for the Question and Answer portion of the May 9, 2026, Dirt Doctor Podcast with Howard Garrett. He spoke his "cheat sheet" of helpful answers, about the benefits of using mosquito dunks and bits, and of various types of pest control. There are paint color recommendations for hiding features in the landscape (fences, utility boxes, even garden furniture) and the usual gardening questions about bed preparation and plant lists. Find these subjects and more in this week's podcast.Guest on Interview from EarthX: Bruce Melton Advertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Show Notes: Q&A Essential Formulas newsletterSauerkrautKampuku soapbed preparationDirt Doctor "Cheat Sheet"Bti for caterpillar pestsSummit mosquito dunks and bitsBioWash by PureGreen on pestsElvis and Nellie rescue dogsLeaf HoppersTree climbing dogsHypoxylon cankerFire Ant controlGasoline/diesel contaminationBark chewed off tree by cowsSluggoDesert RosePaint recommendations (landscape objects)Lambert green and GoAway GreenSilver HoneyWeeds in acreagePlant list AI productsSquash plants - vine borers & beetle controlhttps://www.dirtdoctor.com
The two main parts of the May 2, 2026, podcast are a tour of Howard's Garden and one of several interviews Howard Garrett conducted in April at the EarthX conference. This week's interview is a discussion with Rainmaker.Earth representative Kevin Hauschel, their VP of Sales and Business Development in North America. The Canadian company offers "transformative water technology that restructures irrigation water so that it has the characteristics of rainwater through an advanced oxidation process." Find these subjects and more in this week's podcast.Advertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.com
The biggest part of this week's podcast is a discussion of the Dirt Doctor's "cheat sheet," a multi-page list of the items he was asked about most often on the radio show. The list was there for quick lookup in case he forgot some detail, and it has grown over the years, old things removed, new techniques and products added. Howard also touched on his visit to this year's EarthX conference in downtown Dallas, and plans to air future interviews from there. Find these subjects and more in this week's podcast.Advertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.comShow Notes:SPCA reportEarthXOverview of the Dirt Doctor's best tips from his cheat sheet. Want your own copy? The email is info@dirtdoctor.com or you can send a self-address stamped envelope to the address given at the end of the podcast.
The biggest part of this week's podcast is a tour of Howard's art gallery, in preparation for an April 25, 2026 show and sale. The Dirt Doctor non-profit TORC (Texas Organic Research Center) has been supported for many years by the sale of Howard's art. Howard also answers questions about his research into the best formula to duplicate the weedkiller mix in Agralawn Crabgrass Killer, how and when to transplant yucca, and if horse manure is safe to use in the garden. In a related topic, he describes the easy test for herbicide contamination in compost (comes from manure in animals that ate hay with herbicide treatment), and wraps up with a discussion of the sick tree treatment and haint blue paint.Find these subjects and more in this week's podcast.Advertisers:Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.comShow Notes:SPCA reportArt Show gallery tourQ&AWeed killer mixture tests (Agralawn formula)transplant yuccablackberrieshorse manure in gardenherbicide contamination test (for manure)squirrels chewing post oak barksick tree treatmentdog glucosamine haint blue paint
Poison ivy and mosquitoes are just two of the topics address in the April 11, 2026, Dirt Doctor Podcast with Howard Garrett. He also answers questions about the benefits of using mosquito dunks and bits, and of using hydrogen peroxide to clean pots for planting if in the past there has been a plant disease. He describes the use of organic fertilizers, how to treat fire ants, and much more. Find these subjects and more in this week's podcast.Advertisers:Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxhttps://www.dirtdoctor.comShow Notes:IntroductionSPCA reportSlide showQ&AMosquitoesPost OaksFire AntsCarolina Snail Seed weedPoison Ivy Bugs in corn fertilizerDry molassesOrganic method and water savingsReuse of soil in pots Cleaning planting potsHydrogen PeroxideNew GinkgoTree flares need to be exposed
The April 4, 2026, Dirt Doctor Podcast with Howard Garrett discusses the benefits of growing and using comfrey, dwarf white clover as an excellent part of a lawn, lacewings (green and brown), and the Texas Bug Book. He gives detail on proper organic bed preparation with any soil type, using fireplace ashes in the garden, woody vines in trees, and organic non-selective herbicides. Find these subjects and more in this week's audio of the podcast.Advertisers:Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Summit Chemical mosquito solutions. https://summitchemical.com/mosquito-solutions/Dramm Corporation Consumer Products https://www.dramm.com/html/main.isxhttps://www.dirtdoctor.comShow Notes:IntroductionSPCA reportSlide showComfreyClover (dwarf white)beneficial pest controlLacewings (green and brown)Texas Bug Book Lemon grassBed preparation in all soilsFireplace ash in bedsWoody vines in treesnon-selective herbicides (vinegar)Garrett Juice as fertilizerGrassesCorn gluten meal productsRose rosette treatmentsLocust tree with vinesHackberry
The March 28, 2026, Dirt Doctor Podcast with Howard Garrett discusses how to manage nutgrass (a sedge), hibiscus, a book recommendation (Bargyla Rateaver's Organic Method Primer), recommended tomato varieties, stink bugs in the house, why you can't grow grass under shade trees, bamboo management, cockroaches, selective organic herbicides, koi pond management, and hydrogen peroxide. Advertisers:Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/https://www.dirtdoctor.comShow Notes:Crazy WaterSPCA dogNutgrass / sedgeHibiscusBook - Bargyla Rateaver's Organic Method PrimerOrganic Program materials to useSoft rock phosphate and substitutions for itTomatoesStink bugs in the house (flea beetles)Growing grass in shadeNutrients lacking in North Texas soilBamboo managementCockroachesSelective herbicides (organic)Koi pond algae managementHydrogen Peroxide, saltHOCl dermatologistBest Product recommendations found on Dirt Doctor Website
The March 21, 2026, Dirt Doctor Podcast with Howard Garrett discusses damage from the recent freeze, how to control grass burs, grassy weeds (rescue grass), dicondra (love it or hate it), Agralawn and the Agralawn recipe, how to germinate tough shelled seeds, and the use of trichogramma wasps, beneficial nematodes, and cornmeal products.Advertisers:Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Freeze Miser® prevents your outside water pipes from freezing, wherever you are located. No power needed Freeze Miser prevents frozen pipes with smart flow control. https://www.freezemiser.com/Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Show Notes:Howard's TeaSPCA reportCold spell damageControlling grass bursRescue Grass weedsDicondraAgralawn Crabgrass KillerFormula to make your ownGerminating tough seedsBeneficial nematodes (Nature's Control)Trichogramma wasps (Kunafin)MulchesFlea beetlessoft pest controlGrafting/air layeringCornmeal
The March 14, 2026, Dirt Doctor Podcast with Howard Garrett offers answers posted by listeners using the "Ask Howard" button on the Dirt Doctor website. Topics include eating flowers grown organically, planting potatoes and asparagus, weed blocking plastics, tree root flares, arborists, lava sand and gravel, beneficial nematodes, dog run design, rose rosette, and much more.Show Notes March 14, 2026 Eating FlowersAsparagusPlanting asparagusPotatoesWeed blocking plasticstree root flarearboristslava sand and gravelBeneficial nematodesHorseherbDog run designBioWashLive Oak leaf blisters Advertisers:Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Freeze Miser® prevents your outside water pipes from freezing, wherever you are located. No power needed Freeze Miser prevents frozen pipes with smart flow control. https://www.freezemiser.com/Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Douglass King Seeds https://www.dkseeds.com/Seed Specialist Since 1912https://www.dirtdoctor.com
The March 7, 2026, Dirt Doctor Podcast with Howard Garrett offers answers posted by listeners using the "Ask Howard" button on the Dirt Doctor website. Questions include topics such as spring pest control, planting gardens in raised beds, tree pruning, and what products are safe (or not) to use in an organic garden. #OrganicGardening #SoilAmendments #Pruning #PlantSeed #Trees #StumpRemoval #BeneficialNematodes #HowardGarrettBooks Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Freeze Miser® prevents your outside water pipes from freezing, wherever you are located. No power needed Freeze Miser prevents frozen pipes with smart flow control. https://www.freezemiser.com/Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/Douglass King Seeds https://www.dkseeds.com/Seed Specialist Since 1912https://www.dirtdoctor.comShow Notes March 7, 2026 Herb Book - Howard Garrett https://www.goodreads.com/book/show/2142388.Herbs_for_TexasComfreyorchidsstump removaltree pruning and sick tree treatmentRaised bedsFire antsBeneficial nematodes (Nature's Control)Trichogramma wasps (Kunafin - https://www.kunafin.com)Fungus gnatsMilorganiteaphidsBuy Herbs of Texas bookFabulous Trees slide showSpring plantingOrganic fertilizingHorseherb
Show Notes:Howard's Tea - JuniperSPCA dog for adoptionQ&AAsparagus roots, tree roots, next to housesDry MolassesFire AntsOrange OilBeneficial NematodesCorn Gluten MealHenbitBook - Herbs for Texas by Howard GarrettAvoid broadleaf herbicidesDon't mulch against treesCalendarsWhat to plantPruningFreeze MiserGiant Bark AphidGarlic Pepper TeaToolsCompostSick Tree Treatment AdvertisersCrazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Douglass King Seeds, Seed Specialist Since 1912, developer of Habiturf Native Lawn Mix, https://www.dkseeds.com/Freeze Miser® prevents your outside water pipes from freezing, wherever you are located. No power needed Freeze Miser prevents frozen pipes with smart flow control. https://www.freezemiser.com/Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/
This week's Dirt Doctor podcast with Howard Garrett has more answers to questions sent in by listeners and readers of the website. We are into spring planting and Howard Garrett offers tips about planting from seed, varieties to try, and organic products to use - and avoid. And much more! Show Notes:Fences - metal, wood, cedar postsBook - Lawn Care (by Howard Garrett)Coffee - mushroom varietyQ&A:Watch plants for pests (get them early)Plumeria - move out in stagesPercentages of soil amendments in beds (rates by square feet)Maples native vs hybridShantung maple, Japanese mapleAlfalfa pellets as organic fertilizer (look at percentage in mix)Turf treatmentAgralawn crabgrass killerCompost as fertilizerAvoid contaminated compost (picloram, chlopyralid)Leaf managementMaking own Garrett Juice - recipes General weed control, rescue grassThree of the advertisers on the Dirt Doctor site and podcast are Crazy Water, Douglass King Seed, and Doctor Ohhira's probiotics. Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Douglass King Seeds, Seed Specialist Since 1912, developer of Habiturf Native Lawn Mix, https://www.dkseeds.com/Dr. Ohhira probiotics have been part of the Garrett family health regimen for years. https://drohhiraprobiotics.com/dr-ohhira-probiotics/
Howard Garrett's weekly video podcast touches on many subjects and is supported by the library and content on his Dirt Doctor website and in his many gardening and landscaping books. This week signs of spring are all around (in the questions listeners sent in) and his art will be on display on Valentine's Day in a Deep Ellum art gallery. https://www.dirtdoctor.comTea - may help with cedar feverSPCA dogBook Recommendation: The One-Straw Revolution: An Introduction to Natural Farming by Masanobu Fukuoka https://bit.ly/4aBSq85Ants on trees When to mulch leaves in compostShredded tree trimmings When to move citrus trees outside in springHoja santa from seedCrape myrtleGinkgo PalmsShade clothIn Howard's Garden (pruning)Podomatic - former podcasts
This is a short audio version of the video podcast that demonstrates the exercise routine that Howard Garrett does regularly. There are clues to his exercises in the discussion, but this is a podcast you'll appreciate more if you view it. Go to the Dirt Doctor home page and click on the YouTube button for this and all of the video podcasts. The direct link to the video of this podcast is at https://youtu.be/3_uCIbW_z8s.
Two of the advertisers on the Dirt Doctor site and podcast are Crazy Water and Freeze Miser.Crazy Water is the only mineral water bottled in Texas. Rich with Mother Nature-infused minerals, which are more readily absorbed by your body. https://drinkcrazywater.com/ Freeze Miser® prevents your outside water pipes from freezing, wherever you are located. No power needed Freeze Miser prevents frozen pipes with smart flow control. https://www.freezemiser.com/https://www.dirtdoctor.comShow Notes: Howard's TeaSPCA dogsDirt Doctor Online Class https://bit.ly/4qbi0XhHoward Q and A Hori Hori knifeIce treatment productsBasalt sandCat litter - zeoliteVideo topic discussion - Big Box stores with prominent displays of hazardous productsRoundup (no longer with glyphosate, but still dangerous)Pets in ice and snowItalian Stone PineDirt Doctor Destinations https://bit.ly/4tiqrmz (add your business)Howard's tree climbing dogsFabulous Trees SlideshowMahonia in bloomDirt Doctor site search features work nowBird of ParadiseWhat to plant in the spring?How to start plants indoorsDiscussion of new Dirt Doctor website https://www.dirtdoctor.comPlantingHumate, soft rock phosphate, epsom salts, Garrett Juice (Compost tea)Lighting for plant growingHoward Garrett books
This is the new Dirt Doctor podcast recorded in Dallas, Texas, episode dated January 21, 2026. Topics include: The SPCA ReportCoffee - Chem X Pour OverTea - Juniper, ginger, nettlesBasic Organic ProgramDetox ProgramSick Tree TreatmentTree Trunk GoopQ & A Ask Howardhttps://www.dirtdoctor.com
The new Dirt Doctor podcast has dropped via YouTube account. This was a one-off test, so our podcasts will continue but via our normal video sites for the time being. Useful information is still at https://www.dirtdoctor.com
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
For more helpful information, advice, and recommendations, go to www.dirtdoctor.com.
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