Let’s Talk About Sheaths, Seed Heads, and the Power of Nitrogen
If you’ve been looking close at your lawn lately, especially Bermuda and Zoysia, you’ve probably noticed tough little stalks poking up that aren’t just regular grass blades. Let’s dig a little deeper into what you’re seeing and how to help your lawn look its best.
Grass plants are made up of blades and sheaths. The blade is the flat green part we like to see. The sheath wraps around the base of the blade like a protective jacket. When your lawn starts pushing out seed heads, they come right through that sheath, and they’re often stiffer and lighter in color.
This is why your lawn might feel rough underfoot or look uneven even if you just mowed. It’s not growing crazy fast it’s pushing seed stalks, which grow taller and tougher than the leaf blades.
Like we talked about last week, seed heads are part of the plant’s natural cycle, often triggered by:
Warmer temps
Stress (like drought or compacted soil)
Not enough nitrogen
And here’s where fertilizer makes a difference.
Nitrogen is the fuel your lawn needs to grow thick, green, and healthy. Without enough of it, grass gets pale, thin, and throws seed heads early.
Here are three solid options we recommend at BES-TEX:
16-8-8 + 5% Fe: Great balanced mix. Nitrogen for top growth, phosphorus for roots, and potassium for stress tolerance. Perfect for spring and early summer feedings.
21-7-14 + 5% Fe: Stronger nitrogen with a good kick of potassium to help the lawn handle heat and drought.
21-0-0 with 24% sulfur: Pure nitrogen boost with sulfur to help with high pH soils, which we see a lot of around San Angelo. Helps unlock nutrients your lawn might already have, but can't use.
Apply these when your grass is actively growing, and water it in well. That sheath we talked about? With the right nutrients, your grass will focus more on growing lush blades and less on going to seed.
Dad-to-Dad Tip: Think of fertilizer like breakfast for your lawn. Skipping it won’t kill it, but it won’t grow right either. Feed it well and mow it sharp. You’ll get a lawn that makes the neighbors take notice (and maybe get a little jealous).
Let us know how we can help. We’re here to serve.
BES-TEX Supply • 4512 Adobe Dr. • San Angelo, TX 76903 • 325.653.1300 • www.BES-TEX.com
Summer Fungus in Hybrid Bermuda Lawns
Hot days, humid nights, and regular watering perfect for hybrid Bermuda and summer lawn diseases. One of the most common in our area is Brown Patch (Rhizoctonia solani), but Pythium Blight and Leaf Spot can show up too.
Brown Patch: Circular, tan/brown patches that seem to grow overnight. Often has a darker ring around the edge.
Pythium Blight: Slimy, matted turf in the early morning. Looks greasy.
Leaf Spot: Small, purplish spots on blades that lead to thinning turf.
Nighttime watering or daily irrigation
High humidity or overwatering
Compacted soil with poor drainage
Too much nitrogen during hot weather
Let’s clarify: Overfertilizing means applying too much nitrogen in a single application. For example, 16-8-8 at 6.25 lbs/1,000 sq ft gives you 1 lb of nitrogen that’s a safe, effective rate every two weeks. But doubling that to 12.5 lbs/1,000 means 2 lbs of nitrogen at once and that’s when fungus problems start. Bermuda lawns still need 6+ lbs of nitrogen per year, but apply it gradually.
Water early morning only
Mow with sharp blades at 1.5–2 inches
Avoid high-nitrogen fertilizer in peak heat
Improve airflow (prune nearby trees or shrubs)
1. Heritage G (Azoxystrobin)
Mode of Action: Prevents fungal respiration, stopping disease before it spreads
Use: Granular, apply monthly as a preventative
2. Pillar G (Triadimefon + Trifloxystrobin)
Mode of Action: Dual-actio one stops fungal growth, the other prevents spore production
Use: Great for active infections fast knockdown
3. Armada 50 WDG (Trifloxystrobin + Tebuconazole)
Mode of Action: Systemic and contact gives curative and preventive punch
Use: Mix and spray, rotate with other fungicides to reduce resistance
4. Propiconazole (Banner Maxx)
Mode of Action: Inhibits fungal cell membrane production, stopping the fungus from growing
Use: Great for long-lasting control applied every 2-4 weeks during the summer months for disease prevention
Treat infected areas early, before it spreads
Use a curative fungicide (like Pillar G or Armada)
Avoid watering in the evening
Bag clippings to reduce spread
If you're unsure what you're seeing, bring us a picture or a sample. We'll help you ID the problem and recommend the right treatment plan.
BES-TEX Supply has the fungicides, fertilizers, and real-world advice to keep your lawn looking sharp. Questions? Come see us at 4512 Adobe Dr. or call 325.653.1300.
Mosquito Dunks (SUMMIT) 10.31% Bti
Mode of Action: Bti is a naturally occurring soil bacterium that releases protein toxins, killing mosquito larvae upon ingestion.
Use: Place in standing water, ponds, birdbaths, rain barrels. Each dunk treats 100 sq. ft. of water for up to 30 days.
Altosid Pro-G IGR (ZOECON) 1.5% Methoprene
Mode of Action: Methoprene is an insect growth regulator (IGR) that mimics juvenile hormone, preventing larvae from maturing into adults.
Use: Apply granules to water-holding areas such as ditches, troughs, and containers. Controls for up to 30 days.
Altosid Liquid Larvicide (ZOECON) 5% Methoprene
Mode of Action: Same as above but in liquid form, offering precision in smaller or treated urban areas.
Use: Mix with water and apply to known breeding sites using a sprayer.
IN2CARE Bait Sachets 74.03% Pyriproxyfen, 10% Beauveria bassiana
Mode of Action: Dual action Pyriproxyfen is an IGR, Beauveria is a fungus that infects and kills adult mosquitoes.
Use: Place sachets inside IN2CARE traps; mosquitoes spread the active ingredients to breeding sites.
INZECTO Mosquito Trap (INZECTO)
Mode of Action: A slow-release formulation containing larvicide and adulticide. Kills both larvae and females entering the trap.
Use: Set the trap in shaded, moist areas. Replace every 90 days.
Mosquito Barrier 2-Pack (AION) Yeast-Based Lure
Mode of Action: Produces CO₂ via fermentation to attract female mosquitoes for targeted bait station deployment.
Use: Activate and place around perimeters, ideal for monitoring and reducing populations.
Cyonara Lawn & Garden (CONTROL SOLUTIONS) 0.05% Lambda-Cyhalothrin
Mode of Action: Pyrethroid neurotoxin, causes paralysis and death upon contact.
Use: Apply with a pump or hose-end sprayer to lawn, shrubs, and outdoor perimeters.
Suspend PolyZone (BAYER) 4.75% Deltamethrin
Mode of Action: Microencapsulated pyrethroid, provides long residual kill of adult mosquitoes.
Use: Apply to shaded resting areas, under decks, foliage, walls. Rain-resistant.
Bifen I/T (CONTROL SOLUTIONS) 7.9% Bifenthrin
Mode of Action: Broad-spectrum pyrethroid—disrupts nervous system function.
Use: Mix and spray on lawns, shrubs, and surfaces where mosquitoes rest.
Malathion (CONTROL SOLUTIONS) 57% Malathion
Mode of Action: Organophosphate, blocks acetylcholinesterase, leading to mosquito death.
Use: Apply only in outdoor, non-edible plant areas. Strong odor, use with caution.
Permethrin 10% (CONTROL SOLUTIONS)
Mode of Action: Contact insecticide, quick knockdown via nerve disruption.
Use: Dilute and apply as barrier spray to tall grass, fences, and patios.
Mosquito Pro RTS (MARTIN’S) Lambda-Cyhalothrin, Novaluron, Pyriproxyfen
Mode of Action: Combines knockdown, IGR, and residual control, targets multiple stages.
Use: Ready-to-spray bottle connects to hose for easy perimeter treatment.
Pystol Farm & Dairy Aerosol (MARTINS)
Mode of Action: Dual-action pyrethrins + permethrin with PBO to enhance efficacy.
Use: Spray directly in barn, shed, or outdoor sitting area. Use with caution around pets.
565 Plus XLO (BASF)
Mode of Action: Synergized pyrethrin with PBO and Bicycloheptene for quick indoor/outdoor knockdown.
Use: Spot treatment for resting mosquitoes, porches, patios, or inside storage sheds.Let us know how we can help. We’re here to serve.
Best Management Practices (BMP) for Grub Control in San Angelo, TX
May Edition: The Grubs Are Lurking, But Should We Be Worried?

Grubs are not a specific insect, they're the larval stage of several beetles. Think of them as the awkward teenage phase of the beetle world. Common culprits in our West Texas turf include:
June Beetles (aka May beetles, calendar confusion aside, they’re active spring to summer)
Masked Chafers
Occasional Japanese Beetles (less common here, but worth watching)
Adults emerge (late spring/early summer) and lay eggs in the soil.
Eggs hatch into C-shaped, white-bodied grubs that feed on grassroots.
Feeding frenzy continues through fall, then they burrow down to overwinter.
Spring warm-up brings them back up briefly before pupating and turning into beetles.
In short: they hide, they chew, they cost you money.
The economic threshold is:
0–5 grubs/sq ft: No sweat.
6–9 grubs/sq ft: Keep an eye out.
10+ grubs/sq ft: Time to suit up and fight back.
That’s the point when you’ll notice patches of turf rolling back like a rug, thanks to root damage.
Two main players are effective when applied at the right time:
Imidacloprid (Merit® and similar): Best as a preventative, applied in May–June. Gets absorbed by roots and zaps grubs when they snack.
Chlorantraniliprole (Acelepryn®): Low-risk for pollinators, long-lasting, and works great in May.
Modes of Action
Imidacloprid: Blocks neural pathways. Grubs stop feeding and check out permanently.
Chlorantraniliprole: Affects calcium flow in muscles. Basically paralyzes them slowly and permanently.
Grub issues spike after wet springs, especially following drought years when beetles get active. However, recent seasons have shown low activity in San Angelo. Low rainfall and hot soil temps may be keeping beetle populations in check. Still, better to scout than be sorry.
Scout now (first week of May) and again mid-summer.
Treat preventatively if you had past damage or high beetle activity.
Don’t overtreat grubs aren’t always the bad guys.

Need help picking the right product or identifying grub species?
Come see us at:
BES-TEX Supply
4512 Adobe Dr., San Angelo, TX 76903
325.653.1300
www.BES-TEX.com
Your turf deserves better than a mouthful of beetle babies.