Show #142 - Summer Lawn Care Begins: Fungus Prevention, Watering, and Heat Survival

May 22 marks the beginning of true summer lawn care season. As overnight temperatures rise, lawns enter their most stressful period of the year. This episode focuses on preventing lawn fungus, improving watering practices, choosing the right summer fertilizers, and avoiding the common mistakes that destroy lawns during hot weather.

Summer Lawn Care Is Completely Different

According to this episode, most box-store lawn products are poorly designed for summer conditions.

Common summer lawn problems include:

low-quality fertilizers
excess salts
weak root systems
drought stress
lawn fungus

Summer lawns require:

slow-release nitrogen
iron
humates
low salt index products
water management support

Why Iron Matters in Summer Lawns

One of the biggest summer lawn topics discussed is iron.

Iron helps:

deepen lawn color
reduce summer stress
improve overall turf appearance

The recommended summer lawn formula discussed contains:

10-1-1 fertilizer
10% iron
humates
wetting agents

This combination supports lawns during heat and drought conditions far better than traditional summer fertilizers.

Humates Help Summer Root Growth

Summer naturally slows root growth.

Humates act as plant elicitors that stimulate natural defense systems inside the turf.

Benefits include:

improved drought tolerance
better root recovery
stronger stress resistance
improved pathogen defense

This becomes especially important during periods of heat and humidity.

Lawn Fungus Season Starts Now

As overnight temperatures consistently rise above 67 degrees, lawn fungus pressure begins increasing rapidly.

Best Fungus Prevention Timing

Preventative applications are critical.

Recommended schedule:

first treatment around May 22
second treatment around June 22

The key lesson:

fungus is easier to prevent than cure

Watering Fungicides Correctly Matters

Granular fungicides and insecticides must be watered in properly.

Without watering:

products evaporate rapidly
performance declines significantly
protection windows shorten

This is especially important during high summer temperatures.

Measure Your Water — Don’t Guess

One of the strongest themes of this episode is proper watering measurement.

The recommendation:

all established lawns need 1 inch of water weekly

Most homeowners dramatically underestimate how much water their lawns actually receive.

Why Sprinkler Timers Often Fail

Running sprinklers for short periods is usually insufficient during summer.

Problems include:

shallow root growth
drought stress
uneven watering
fungus confusion

The correct approach:

water deeply
water less frequently
allow drying between applications

Deep watering forces roots to chase moisture downward.

Use a Rain Gauge or Tuna Can

Water output varies tremendously depending on:

sprinkler heads
hose size
water pressure
irrigation systems

Simple measuring tools include:

rain gauges
tuna cans

The episode stresses:

measure your actual water output instead of guessing

Brown Lawns Are Often Drought — Not Fungus

A major summer mistake is confusing drought stress with lawn disease.

Signs of drought stress include:

evenly scattered brown patches
widespread fading
dry, stressed turf

Many lawns blamed on fungus are actually suffering from insufficient watering.

Deadheading Improves Flowering

Removing spent flowers saves plant energy and often promotes reblooming.

Deadheading Tips

For smaller flowers:

hedge trimmers work well

For larger blooms:

remove the entire flower truss

Important plants to deadhead include:

azaleas
peonies
rhododendrons
hydrangeas

Rose Care During Caterpillar Season

May is described as National Caterpillar Month.

Rose pests become especially active during this period.

A preventative spray combination helps protect against:

caterpillars
fungus
Rose Rosette disease
mites

Early preventative care produces healthier blooms and foliage through summer.

Tent Caterpillars and Cherry Trees

Tent caterpillars gather in silk nests inside tree crotches.

Best spray timing:

dawn
dusk

This ensures caterpillars are inside the nests during treatment.

Better Weed Killers for Tough Weeds

The episode strongly recommends stronger broadleaf weed products for difficult weeds.

Especially challenging weeds include:

clover
violets
oxalis
wild garlic
poison ivy

The discussion emphasizes that waxy weed coatings often prevent weaker weed killers from working effectively.

Bamboo Requires Aggressive Control

Bamboo control requires:

strong chemistry
proper timing
post-rain applications
hot weather spraying

The key takeaway:

spraying is far more effective than physical removal

Mosquito and Tick Prevention

Summer insect protection should include:

mosquito sprays
tick control
treated clothing
standing water prevention

Special attention should go toward:

backpacks
tents
shaded damp zones
stagnant water areas

Vegetables and Lime Go Together

Vegetables demand hydrated lime.

Important lime lessons include:

hydrated lime works immediately
pelleted lime acts slowly
soft tissue plants love lime
lawns also require annual lime applications

Without proper lime:

fertilizer efficiency drops dramatically
plant performance declines

Biggest Summer Lawn and Garden Mistakes

Poor Fertilizer Choices

Avoid:

10-10-10
weak liquid fertilizers
outdated lawn foods

Watering Problems

Common mistakes:

short watering cycles
no mulch
excessive peat moss
failure to measure rainfall

Wrong Plant Placement