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May Lawn Tips and Product Advice

May 3, 2018

Mow your grass taller. Taller grass blades mean deeper roots to match the leaf growth. Adjust your mower so that after you cut your grass height at around 2-1/2 inches for Bluegrass, Ryegrass and Fine Fescue; at 3 inches for Tall Fescue and Buffalograss; at 3 to 4 inches for St. Augustinegrass; and at 1-1/2 to 2 inches for Bermudagrass, Centipedegrass and Zoysia.

Feed your lawn so your grass roots are not starving. It is best to give your lawn two spring feedings about 6 to 8 weeks apart. Feeding your lawn while we’re getting some late spring rain will strengthen your grass and help it grow new roots. Research has proven that the slow, steady feeding that is unique to Scotts helps your lawn develop a healthier root system that uses water more efficiently. A healthy lawn that’s been fed 4 or 5 times a year with one of the Scotts Lawn Foods will look good this summer on less water than a starving lawn with weak roots.


This lawn owner feeds her St. Augustine grass lawn on a regular schedule. Most lawns thrive with 4 or 5 feedings a year.

Get rid of dandelions and other aggressive weeds, otherwise they’ll steal what little water there may be from your good grass this summer. If you have just a few weeds, you can spot treat them without hurting your good grass by spraying Ortho Weed-B-Gon MAX plus Crabgrass Killer OR Roundup For Lawns. If you have lots of dandelions, you can kill them the same time you feed your lawn with Scotts Turf Builder Weed & Feed or Scotts Turf Builder Triple Action.  (If you have St. Augustinegrass, use Scotts Bonus S Weed & Feed or Scotts Turf Builder Southern Triple Action instead.)

Make sure you have crabgrass under control. If you had lots of crabgrass last year, and you have not gotten your crabgrass preventer down yet, you might still consider making the application as soon as possible even though you are past the ideal application time. That is because you can still prevent the later germinating crabgrass if you act fast. Then in summer, you can spray any crabgrass you missed with Ortho Weed-B-Gon MAX plus Crabgrass Killer.

Prevent Grub Damage. Now is your best opportunity to prevent grubs from destroying your lawn this fall. A single application of Scotts GrubEx this month will prevent the next generation of grubs from attacking your lawn in late summer. This application of GrubEx also protects against other lawn damaging insects like sod webworm .

Protect your family and pets from fleas, ticks, ants by spreading some Ortho Bug B Gon on your lawn.

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  1. Rich permalink


    Right now my lawn is in pretty good shape BUT there’s way too much poa annua. I put Dimension down in April, so that should suppress the crabgrass and I’ve killed the clover and other broad-weeds with an application of speedzone. I hit the poa annua with Tenacity and it turned it a little yellow, but I would appreciate some advice on how to prevent it appearing year on year – I’m thinking that Scotts Turf Builder Starter will help as a pre-emergent, but I’m confused on timing.

    I live in DC, so summers are hot and I think poa annua germinates in September/October once temps drop – how do I time the overseed AND the Scotts Turf Builder Starter as a pre-emergent?

    • Hi Rich
      Scotts Halts will prevent A high percentage of Poa Annua when applied around Sept 1. It contains Pendimethalin. You will not be able to seed. Scotts Starter with Weed Preventer is compatible with seed however Poa Annua is not listed on the label. Hope this helps.

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