Bluegrass Maintenance

Bluegrass

Homeowner Maintenance Guide

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2.5–3.5 inches
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1 inch per week total
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Preventative Fungicide & Insecticide

Seasonal Maintenance Guides for Your Bluegrass

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MOWING

Don’t make the mistake of mowing your bluegrass lawn too short. Keep your lawn between 2.5–3.5 inches in height with a rotary mower that has a sharpened blade. Never remove more than ⅓ of the leaf blade.
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WATERING

Don’t overwater. Bluegrass needs about one inch of water a week from natural rainfall or irrigation. If you apply any granular fertilizer or control product, you will need to water it in. This is a sufficient amount of water for the week. Overwatering may promote disease outbreak. Conduct an irrigation audit to evaluate how much water is being delivered to different areas of your lawn.
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FERTILIZATION

For optimal results, feed your lawn during the spring season by applying Lawnifi Foundation, a granular fertilizer.

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WEED CONTROL

Apply a pre-emergent herbicide when soil temperatures reach 55 degrees Fahrenheit. This will prevent summer annual weeds like crabgrass, goosegrass and foxtail from plaguing your lawn and garden. Apply post-emergent herbicides in May as needed to control summer annual and perennial broadleaf weeds like white clover, knotweed, spurge and lespedeza. Products containing multiple broadleaf active ingredients are more effective in controlling broadleaf weeds.
insect control

INSECT CONTROL

Apply a broad-spectrum insecticide to prevent spring insects from appearing or to control any current spring insects like white grubs. White grubs may be active at this time. If you see any white grubs, apply a systemic insecticide.
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FUNGUS CONTROL

Unlike warm season turfgrasses, there’s typically no real reason to make fungicide applications in the spring for bluegrass. If, however, you notice disease in your bluegrass, apply a systemic fungicide.

Read more in our Sod University article: Spring Maintenance Tips for Your Bluegrass or Fescue Lawn.

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MOWING

When mowing during the summer, never remove more than 1/3 of the leaf blade at a time. If you remove more than that, you will stress the grass and it may go brown for a short time. Taller blades provide more shade for your root system to stay cool and retain moisture during the hot summer days. If you are returning from vacation, you may have to mow multiple times to get the grass back to the desired height. Wait about three to five days between each mowing.

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WATERING

Do not over water the grass. Bluegrass only needs about one inch of water weekly. Water for longer periods of time, less frequently and in the early morning hours. Take rainfall into consideration.

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FERTILIZATION

For optimal results, feed your lawn monthly during the summer season by applying the Lawnifi Summer Box liquid fertilizer program.

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WEED CONTROL

DO NOT use herbicides at this time.

insect control

INSECT CONTROL

Check for and control white grubs in July and August. Treat with an insecticide if needed. If you use a granular variety, water the lawn immediately after application to help soil absorption. August is the best time to control grubs because they are small and feeding near the soil surface.

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FUNGUS CONTROL

Bluegrass is highly susceptible to brown (large) patch disease, which appears as irregularly shaped patches of dead or dying turf. Do not apply nitrogen fertilizer when the disease is active, keep the mowing height above three inches and water between 2:00–8:00AM. Apply fungicide during severe brown patch outbreaks. If you use a granular variety, water the lawn immediately after application to help soil absorption.

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MOWING

Mow your bluegrass at a height of 2.5–3 inches in height during the fall.

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WATERING

Bluegrass requires about 1–1.25 inches of water every week including rainfall and supplemental irrigation. Don’t overwater. Watering in the early morning decreases risk of certain turfgrass disease.

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FERTILIZATION

For optimal results, feed your lawn during the fall season by applying the Lawnifi Fall Fertilizer Box.

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WEED CONTROL

Apply pre-emergent herbicides to control winter annual and perennial weeds like chickweed, henbit, Poa annua, crabgrass or goosegrass. Apply post-emergent herbicides only when weeds are present.

insect control

INSECT CONTROL

Check for and control any white grubs, sod webworms or fall armyworms. Treat with an insecticide if needed. If you use a granular variety, water the lawn immediately after application to help soil absorption.

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FUNGUS CONTROL

Apply fungicide if needed. If you have had a fungus or disease in your bluegrass in the past or have quite a bit of shade in the yard, apply a systemic fungicide to prevent future outbreaks. Consider mapping those areas because fungicide treatment can be expensive. If you use a granular variety, water the lawn immediately after application to help soil absorption.

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SPRING
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MOWING

Don’t make the mistake of mowing your bluegrass lawn too short. Keep your lawn between 2.5–3.5 inches in height with a rotary mower that has a sharpened blade. Never remove more than ⅓ of the leaf blade.
null

WATERING

Don’t overwater. Bluegrass needs about one inch of water a week from natural rainfall or irrigation. If you apply any granular fertilizer or control product, you will need to water it in. This is a sufficient amount of water for the week. Overwatering may promote disease outbreak. Conduct an irrigation audit to evaluate how much water is being delivered to different areas of your lawn.
null

FERTILIZATION

For optimal results, feed your lawn during the spring season by applying Lawnifi Foundation, a granular fertilizer.

null

WEED CONTROL

Apply a pre-emergent herbicide when soil temperatures reach 55 degrees Fahrenheit. This will prevent summer annual weeds like crabgrass, goosegrass and foxtail from plaguing your lawn and garden. Apply post-emergent herbicides in May as needed to control summer annual and perennial broadleaf weeds like white clover, knotweed, spurge and lespedeza. Products containing multiple broadleaf active ingredients are more effective in controlling broadleaf weeds.
insect control

INSECT CONTROL

Apply a broad-spectrum insecticide to prevent spring insects from appearing or to control any current spring insects like white grubs. White grubs may be active at this time. If you see any white grubs, apply a systemic insecticide.
null

FUNGUS CONTROL

Unlike warm season turfgrasses, there’s typically no real reason to make fungicide applications in the spring for bluegrass. If, however, you notice disease in your bluegrass, apply a systemic fungicide.

Read more in our Sod University article: Spring Maintenance Tips for Your Bluegrass or Fescue Lawn.

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SUMMER
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MOWING

When mowing during the summer, never remove more than 1/3 of the leaf blade at a time. If you remove more than that, you will stress the grass and it may go brown for a short time. Taller blades provide more shade for your root system to stay cool and retain moisture during the hot summer days. If you are returning from vacation, you may have to mow multiple times to get the grass back to the desired height. Wait about three to five days between each mowing.

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WATERING

Do not over water the grass. Bluegrass only needs about one inch of water weekly. Water for longer periods of time, less frequently and in the early morning hours. Take rainfall into consideration.

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FERTILIZATION

For optimal results, feed your lawn monthly during the summer season by applying the Lawnifi Summer Box liquid fertilizer program.

null

WEED CONTROL

DO NOT use herbicides at this time.

insect control

INSECT CONTROL

Check for and control white grubs in July and August. Treat with an insecticide if needed. If you use a granular variety, water the lawn immediately after application to help soil absorption. August is the best time to control grubs because they are small and feeding near the soil surface.

null

FUNGUS CONTROL

Bluegrass is highly susceptible to brown (large) patch disease, which appears as irregularly shaped patches of dead or dying turf. Do not apply nitrogen fertilizer when the disease is active, keep the mowing height above three inches and water between 2:00–8:00AM. Apply fungicide during severe brown patch outbreaks. If you use a granular variety, water the lawn immediately after application to help soil absorption.

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FALL
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MOWING

Mow your bluegrass at a height of 2.5–3 inches in height during the fall.

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WATERING

Bluegrass requires about 1–1.25 inches of water every week including rainfall and supplemental irrigation. Don’t overwater. Watering in the early morning decreases risk of certain turfgrass disease.

null

FERTILIZATION

For optimal results, feed your lawn during the fall season by applying the Lawnifi Fall Fertilizer Box.

null

WEED CONTROL

Apply pre-emergent herbicides to control winter annual and perennial weeds like chickweed, henbit, Poa annua, crabgrass or goosegrass. Apply post-emergent herbicides only when weeds are present.

insect control

INSECT CONTROL

Check for and control any white grubs, sod webworms or fall armyworms. Treat with an insecticide if needed. If you use a granular variety, water the lawn immediately after application to help soil absorption.

null

FUNGUS CONTROL

Apply fungicide if needed. If you have had a fungus or disease in your bluegrass in the past or have quite a bit of shade in the yard, apply a systemic fungicide to prevent future outbreaks. Consider mapping those areas because fungicide treatment can be expensive. If you use a granular variety, water the lawn immediately after application to help soil absorption.

Bluegrass Maintenance Tips

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SOIL MANAGEMENT

  • Soil test every two years.
  • Amend soil to maintain pH between 6.0 and 7.0
  • Know your soil type!

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MOWING

  • Sharpen blades every spring.
  • Keep mowed between 2.5–3.5 inches.
  • Don’t cut off more than 1/3 the blade.

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IRRIGATION

  • Don’t overwater.
  • Water less in cooler fall months.
  • About 1 inch a week total irrigation spring & summer.
  • Water deeply, frequently, and in early AM.

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WEED CONTROL

  • Pre-emergents prevent weeds from germinating.
  • Post-emergents kill weeds after they germinate.
  • A thick, lush lawn is the best deterrent to weeds.

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DISEASE CONTROL

  • Overly wet grass + shade = fungus problems.
  • Apply systemic fungicide to prevent fungus outbreaks.
  • Use multiple fungicide applications to treat affected areas.

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INSECT CONTROL

  • Use a broad spectrum insecticide that controls chinch bugs
  • For a once-a-year treatment, July & August are good months
  • If using a granular insecticide, water in after applicatiom
  • Look for insect damage on grass blades and/ or roots

A WORD OF CAUTION FOR NEWLY SODDED LAWNS

A pre-emergent contains a chemical that prevents a weed from putting down roots. Because it is a root inhibitor, it can also negatively affect your new lawn, which is trying to establish itself by putting down roots.

If you successfully killed and removed your old lawn, including all the weeds in it, your newly sodded lawn should have relatively few weeds. It is suggested that you hand pick weeds out of your newly sodded lawn for the first season.

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