LAWN AND YARD SOLUTIONS

Section 1: When to Reseed Your Tracy Lawn

Tracy sits in California’s Central Valley with summer highs regularly hitting 100°F+, which makes timing everything. Your grass type determines your window.

Section 2: How to Properly Reseed Your Lawn

Before You Start (August – Early September)

1. Get a soil test — Tracy’s clay-adobe soils are often alkaline (pH 7.5–8.0). Target pH 6.0–7.0. Contact UC Cooperative Extension or use a mail-in kit.
2. Gather supplies: Tall Fescue seed (8–10 lbs per 1,000 sq ft for overseeding; 15–20 lbs for full reseed), starter fertilizer, core aerator (rental), broadcast spreader, soil amendment, and compost.

Full Reseed Steps

Step 1 — Kill Existing Lawn: Apply glyphosate-based herbicide on a calm, dry day. Avoid imazapyr — it lingers in soil. Wait 7–14 days for full kill.

Step 2 — Scalp and Remove Debris: Mow as short as possible, rake up dead material and thatch.

Step 3 — Dethatch: Run a dethatcher or vertical mower to break up remaining thatch. Critical for seed-to-soil contact.

Step 4 — Core Aerate: Make two passes in perpendicular directions. Leave plugs on the surface. THE most important step for Tracy’s compacted clay soil.

Step 5 — Amend the Soil: If pH above 7.2: apply sulfur per soil test. Topdress with ½ inch of screened compost. For severely compacted areas: till in 2–3 inches of compost.

Step 6 — Apply Starter Fertilizer: See Starter Fertilizer section (Section 3).

Step 7 — Seed: Load half your seed and walk north–south. Load the other half and walk east–west. Bi-directional method eliminates streaking and gaps.

Step 8 — Lightly Cover Seed: Topdress with ⅛ – ¼ inch of screened compost or peat moss. Do NOT bury seed deeper than ¼ inch.

Step 9 — Roll or Tamp: Use a lawn roller (half-filled with water) or hand tamp to press seed firmly into soil.

Step 10 — Water Immediately: Begin germination irrigation schedule right away.

Post-Seeding Irrigation Schedule

First Mow

Mow when new grass reaches 3–3.5 inches, typically 3–4 weeks after germination. Set blade to 2.5 inches for first cut. Use a sharp blade; never mow wet soil. Stay off new grass as much as possible for the first 8 weeks.

Section 3: Starter Fertilizer — Timing & Application

Section 4: Month-by-Month Lawn Care Calendar

Calibrated for Tracy, CA — USDA Zone 9b, Clay-Adobe Soil, Tall Fescue Lawn

❄️ WINTER

JANUARY — 🌧️ Planning Season

• Mowing: As needed — minimal growth
• Watering: Rely on winter rains; supplement only if soil is dry 2 inches down
• Fertilizer: None
• To-Do: Get soil test done now (results guide spring amendments); plan aeration if not done in fall; order seed for bare spots

FEBRUARY — 🌤️ Early Wake-Up

• Mowing: Resume light mowing as growth begins (around late February)
• Watering: Supplement rainfall as needed
• Pre-Emergent: ⚠️ KEY APPLICATION — Apply first pre-emergent of the year by late Feb/early March, before soil hits 55°F. This is the most critical pre-emergent application of the year — miss it and you’ll fight crabgrass all summer. Use prodiamine (Barricade) or dithiopyr (Dimension).
• Fertilizer: None yet — wait until March
• To-Do: Test and run sprinkler system; replace broken heads; adjust coverage

🌼 SPRING

MARCH — 🌿 Spring Green-Up

• Mowing: Weekly mowing resumes. Set height to 3–3.5″
• Watering: Transition to 2–3x per week
• Pre-Emergent: Apply second split application for extended crabgrass prevention through summer
• Fertilizer: ✅ First spring fertilizer — balanced slow-release (e.g., 15-5-10 or 16-4-8). Kickstarts spring green-up.
• Soil Amendments: Apply sulfur if pH needs lowering; apply compost topdress for clay soil improvement
• Core Aeration: If fall aeration was skipped, do it now before lawn fully wakes up
• Broadleaf Weeds: Begin spot-treating dandelions, clover, and oxalis as they emerge
• To-Do: Sharpen mower blade; inspect turf for winter damage or bare spots — patch with seed now

APRIL — 🌹 Peak Growth Begins

• Mowing: Weekly; never remove more than ⅓ of blade at a time
• Watering: Increase to 3x per week as temps rise
• Fertilizer: ✅ Second spring feeding — slow-release balanced formula
• Pre-Emergent: Final opportunity if missed earlier. Use dithiopyr (Dimension) — has some post-emergent activity on young crabgrass
• Broadleaf Weeds: Active spray month — treat clover, dandelion, spurge, and oxalis with 3-way selective herbicide (2,4-D + MCPP + dicamba). Spray on calm days above 60°F.
• Surface Insects: Begin monitoring for sod webworm and chinch bugs
• Fungus: Low risk this time of year. No treatment needed.

MAY — ☀️ Critical Pest Window ⭐ KEY MONTH

• Mowing: Weekly at 3.5–4″ as heat increases
• Watering: Increase frequency; transition to 4–6 AM watering only
• Fertilizer: ✅ Early summer feeding — slow-release nitrogen; avoid quick-release in heat
• Grubs (Preventive): 🐝 KEY APPLICATION — apply chlorantraniliprole (Scotts GrubEx) before egg hatch, water in thoroughly
• Surface Insects: First bifenthrin application (Ortho Bug B Gon or Bifen IT) as preventive barrier for sod webworm, chinch bugs, and armyworms. Treat in the evening.
• Broadleaf Weeds: Continue spot-treating. Switch to spurge/oxalis-specific product if needed.
• Fungus: Watch begins. Dethatch if thatch exceeds ½ inch.

☀️ SUMMER

JUNE — 🔥 Early Summer Management

• Mowing: Weekly; raise height to 4″ to shade soil and reduce water loss
• Watering: Deep watering 3–4x per week, 4–6 AM only
• Fertilizer: ✅ Early summer feeding — slow-release nitrogen; avoid quick-release in heat
• Grubs: Preventive should be down. Monitor for irregular brown patches.
• Surface Insects: Second bifenthrin application if activity observed. Check for chinch bugs, armyworms (soap drench test), and sod webworms.
• 🍄 Fungus (Brown Patch): Risk rises sharply when nights stay above 70°F. Apply preventive fungicide (azoxystrobin, propiconazole, or thiophanate-methyl) if you had problems last year or at first sign of circular brown rings. Rotate chemistries to avoid resistance.
• Weeds: Spot-treat nutsedge with halosulfuron (Sedgehammer). Pre-emergent no longer effective on established weeds.

JULY — 🌡️ Heat Survival Mode

• Mowing: 3.5–4″ height. Mow in early morning. Sharp blade only — dull cuts tear grass under heat stress.
• Watering: 3–4x per week, 4–6 AM only. Deep and infrequent beats shallow and frequent.
• Fertilizer: ❌ None. High nitrogen in 100°F heat will burn your lawn and cause disease.
• Iron: If yellowing, apply iron sulfate or chelated iron (EDDHA) for green color without pushing growth.
• 🐝 Grubs (Curative): Monitor for irregular brown patches that peel up like a rug. Apply Arena 50 WDG (0.22–0.29 oz per 1,000 sq ft) or Arena 0.25G (2.8–3.7 lbs per 1,000 sq ft) by Nufarm. Does not need to be immediately watered in. Note: Trichlorfon (Dylox) is completely banned in California and is not available to anyone.
• 🍄 Fungus (Brown Patch): Watch for circular tan/brown rings. Apply azoxystrobin or propiconazole-based fungicide if found.
• Surface Insects: Watch for sod webworm moths at dusk and chinch bug damage at lawn edges. Treat with bifenthrin if present.
• To-Do: Get a soil test this month. Order fall seed early.

AUGUST — 🌾 Pre-Reseeding Prep

• Mowing: 3.5–4″. Keep blades sharp.
• Watering: Same as July. Do not over-water trying to compensate for heat.
• Fertilizer: ❌ None on established lawn.
• 🐝 Grubs (Preventive): Last window for preventive grub control — apply chlorantraniliprole (Scotts GrubEx) in late August if missed in spring. Water in well.
• 🐝 Grubs (Curative): If active damage found, apply Arena 50 WDG or Arena 0.25G (clothianidin) by Nufarm. Note: Trichlorfon (Dylox) is completely banned in California.
• Surface Insects: Continue monitoring; treat with bifenthrin as needed.
• Fungus: Continue monitoring for brown patch if nighttime temps stay above 70°F.
• To-Do: ✅ Buy amendments, rent core aerator, buy seed and starter fertilizer, plan irrigation schedule, mark bare/thin areas.

🅆 FALL

SEPTEMBER — 🌱 PRIME RESEEDING MONTH ⭐ KEY MONTH

• RESEED mid-Sept to early Oct (see full reseeding process in Section 2)
• Aerate entire lawn before seeding
• Topdress with a light layer of topsoil (⅛ – ¼ inch) over seeded areas to improve seed-to-soil contact and help retain moisture for germination — do not apply more than ¼ inch or seed may be buried too deep
• Apply starter fertilizer at time of seeding
• Mowing: Mow established areas to 1.5–2″ before overseeding to reduce competition
• Watering: Germination schedule (2–3x daily, light) on seeded areas; continue deep watering on established zones
• Fertilizer: Apply first fall fertilizer to established areas (balanced slow-release, 16-6-8 or similar)
• Pre-Emergent: ❌ Do NOT apply on seeded areas. Can apply on established non-seeded border areas for Poa annua control using prodiamine or dithiopyr.
• Weeds: Spot-treat broadleaf weeds in established areas with selective broadleaf herbicide (2,4-D + MCPP + dicamba blend)
• Fungus: Brown patch risk still elevated. New seedlings are especially vulnerable.

OCTOBER — 🌝 New Lawn Establishment

• New Grass: Should be 1.5–2″ tall and ready for first mow by mid-month
• Mowing: First mow of new grass at 2.5″. Do not bag — let clippings return.
• Watering: Gradually transition from daily to every-other-day watering
• Fertilizer: Second feeding 4–6 weeks after seeding (balanced 16-6-8 or slow-release 19-0-6)
• Pre-Emergent (Fall): Once new grass has been mowed 3–4 times, apply fall pre-emergent (prodiamine or pendimethalin) for Poa annua and winter annual weeds. Critical but often-missed application.
• Broadleaf Weeds: Last effective window before cool temps reduce herbicide uptake. 3-way broadleaf herbicide; do not apply to seedlings younger than 8 weeks.
• Grubs: Continue monitoring. Apply Arena (clothianidin) if damage is active.
• To-Do: Check and winterize irrigation system; clean mower deck and sharpen blades.

NOVEMBER — 🌉 Hardening Off

• Mowing: Reduce frequency as growth slows. Final height 2.5–3″. Do not scalp.
• Watering: Reduce to 1–2x per week as temps cool
• Fertilizer: Apply winterizer fertilizer (low nitrogen, high potassium — e.g., 6-0-18 or 5-10-31). Potassium strengthens roots and improves winter hardiness and spring green-up.
• Pre-Emergent: If not applied in October, apply now for Poa annua and henbit control
• Weeds: Final chance for broadleaf weed control before dormancy
• Fungus: Risk drops with cooler temps. No treatment typically needed.
• To-Do: Blow out or drain irrigation system before first frost.

❄️ WINTER (CONT.)

DECEMBER — ❄️ Rest & Plan

• Mowing: Rarely needed. Only if growth occurs after warm spells.
• Watering: Once per week or less. Watch for free water from winter rains.
• Fertilizer: ❌ None
• To-Do: Plan next year’s program; order pre-emergent and grub control products early; note any problem areas.

Section 5: Quick Homeowner Reference Product Guide

Section 6: Top Tips for Tracy’s Unique Challenges

🏗️ Clay Soil: Aerate aggressively every fall. Add compost annually to slowly improve soil structure over time.

💧 Water Restrictions: Check with the San Joaquin County Water District before setting your controller — restrictions vary by season.

🌡️ Heat Stress: Never fertilize with quick-release nitrogen when temps are above 90°F. Iron is your best friend for color in summer.

📅 Pre-Emergent Timing: Tracy’s soil heats up fast in spring — don’t miss your February/March pre-emergent window. Once you see crabgrass, it’s too late.

🌱 Reseeding + Pre-Emergent Conflict: You cannot use pre-emergent on areas where you intend to seed for 8–12 weeks prior, depending on the product. Plan accordingly.

🧪 Soil Testing: Test every 2–3 years. Tracy’s adobe soil can shift alkaline over time, affecting nutrient uptake.