Sprayed herbicide in the evening and then it rained this morning
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- Posts: 28
- Joined: August 13th, 2019, 12:11 pm
- Location: Boston Metro West
- Grass Type: KBG, some fescue
- Lawn Size: Not Specified
- Level: Not Specified
Sprayed herbicide in the evening and then it rained this morning
I'm wondering if anyone has any experience with spraying herbicide in the evening when the dew is starting to form on the grass which is then followed up by unexpected morning rain showers.
I spent yesterday afternoon (a beautiful day) prepping to spray my lawn with a cocktail of Eliminate-D + Tenacity + Lesco Spreader Sticker. I started spraying around 6:30PM and finished around 7:30PM while dew was forming on the grass. I thought I would have at least the morning hours today for the herbicide to dry in to the lawn, but the forecast was off and it started to rain around 7AM followed by some heavy downpours around 10AM.
Any idea if the herbicide has to dry in for it to become effective? I know the label says do not irrigate or spray if rain is expected in the next 24 hours. I kind of figured I'd have close to that time-frame based on yesterday's forecast for today, but alas, that was not the case. I'm hoping the spreader sticker will help it "stick " around so it is absorbed.
If no one knows the answer, I guess time will tell me in the next few days and weeks!
I spent yesterday afternoon (a beautiful day) prepping to spray my lawn with a cocktail of Eliminate-D + Tenacity + Lesco Spreader Sticker. I started spraying around 6:30PM and finished around 7:30PM while dew was forming on the grass. I thought I would have at least the morning hours today for the herbicide to dry in to the lawn, but the forecast was off and it started to rain around 7AM followed by some heavy downpours around 10AM.
Any idea if the herbicide has to dry in for it to become effective? I know the label says do not irrigate or spray if rain is expected in the next 24 hours. I kind of figured I'd have close to that time-frame based on yesterday's forecast for today, but alas, that was not the case. I'm hoping the spreader sticker will help it "stick " around so it is absorbed.
If no one knows the answer, I guess time will tell me in the next few days and weeks!
- MorpheusPA
- Posts: 18129
- Joined: March 5th, 2009, 7:32 pm
- Location: Zone 6 (Eastern PA)
- Grass Type: Elite KBG
- Lawn Size: 10000-20000
- Level: Advanced
Re: Sprayed herbicide in the evening and then it rained this morning
You're fine. Absorption is within 3 hours. Dew is around 1 quart per 1,000 square feet or less, not enough to significantly dilute the herbicide. Tenacity is also root-effective, so it works even if immediately watered in. Eliminate-D is Dicamba and 2,4-D, neither of which are going to be hit by some dew.
Twelve hours was more than enough.
Twelve hours was more than enough.
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- Posts: 28
- Joined: August 13th, 2019, 12:11 pm
- Location: Boston Metro West
- Grass Type: KBG, some fescue
- Lawn Size: Not Specified
- Level: Not Specified
Re: Sprayed herbicide in the evening and then it rained this morning
Thanks MorpheusPA. Once again you are correct! It does look like some of the weeds sprayed are wilting. I'm happy to see it appears to be working. I'm just hoping it puts a dent in the Rose of Sharon seedlings that always seem to survive the mowings.
- MorpheusPA
- Posts: 18129
- Joined: March 5th, 2009, 7:32 pm
- Location: Zone 6 (Eastern PA)
- Grass Type: Elite KBG
- Lawn Size: 10000-20000
- Level: Advanced
Re: Sprayed herbicide in the evening and then it rained this morning
Oh, well, Rose of Sharon...I can't promise anything there.
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- Posts: 1259
- Joined: June 1st, 2015, 3:10 pm
- Location: S.E. Mass.
- Grass Type: KBG
- Lawn Size: 1000-3000
- Level: Experienced
Re: Sprayed herbicide in the evening and then it rained this morning
I have never heard of anything working on rose of Sharon seedlings. Your best bet is collecting the seed pods left behind after the flowers drop off.
Cutting them a few times usually does the trick, I wish I knew a pre-m or herbicide that worked on them.
Cutting them a few times usually does the trick, I wish I knew a pre-m or herbicide that worked on them.
- MorpheusPA
- Posts: 18129
- Joined: March 5th, 2009, 7:32 pm
- Location: Zone 6 (Eastern PA)
- Grass Type: Elite KBG
- Lawn Size: 10000-20000
- Level: Advanced
Re: Sprayed herbicide in the evening and then it rained this morning
Nuke them from orbit. It's the only way to be sure.
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- Posts: 28
- Joined: August 13th, 2019, 12:11 pm
- Location: Boston Metro West
- Grass Type: KBG, some fescue
- Lawn Size: Not Specified
- Level: Not Specified
Re: Sprayed herbicide in the evening and then it rained this morning
Unfortunately, they are all around the border of my yard and they flower and seed all through middle July into the fall. They are impossible to control and mowing the seedlings does no good. They are able to survive being cut low. It is amazing how many seeds they produce. When we had snow on the ground, I bumped into a few of them and there must have been a thousand seeds the fell on top of the white snow making them easy to see. I would rip them all out but my wife likes them. If anyone knows of a way to defeat the seedlings, please let me know.
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