Ask A Pro: 866-581-7378 Mon-Fri 9am-5pm ET Contact Us
Fast Free Shipping On Your Entire Order*
DoMyOwn - Do It Yourself Pest Control
  • Use "Spacebar" or "Enter" to expand the My Account navigation menu.
  • Use Down or Tab key to select next menu item.
  • Use Up or Shift+Tab keys to select the previous item.
  • Use Enter/Space key to visit the menu item.
  • Use Esc key to leave the submenu.
  • Use Left/Right arrow keys to allow users to navigate within the navigation links.
  • Use Down arrow key to expand the submenu and up/down arrow keys to navigate within the submenu.
  • Use Enter/Space key to select the menu/submenu items.
  • Use Esc key to leave the submenu.

Select Sales Ending 7/31 - SHOP NOW >>

Product Q&A

« See More Q&A's

Richard from Normandy Park, Wa writes

Can I use both pendimethalin and dithiopyr in the same year?

I applied Scott's Halts Crabgrass And Grassy Weed Preventer (active ingredient Pendimethalin) at the end of August to control poa annua. Soil temperatures dropped below 70 degrees early this year so I put it down sooner than hoped. I would like to apply a second application of Pendimethalin in 6-8 weeks to be sure I have good control over the fall and winter. The label says to apply no more than two times per year but I would like to apply a pre-emergent in the spring as well. Can I apply this product containing dithiopyr next spring without causing a problem? Also, assuming that's okay, would it be better to apply dithiopyr this fall or next spring?

Answer:

Yes, If you have used a pre-emergent with pendimethalin in the fall you can use a pre-emergent with dithiopyr like Hi-Yield Weed and Grass Stopper with Dimension Herbicide in the spring to prevent resistance buildup.

Answer last updated on: 09/18/2021

Was this answer helpful to you? Yes No

Hi-Yield Weed and Grass Stopper with Dimension Herbicide

Hi-Yield Weed and Grass Stopper with Dimension Herbicide

4.5 out of 5 stars

$33.67

Free Shipping*

Buy Now