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Showing posts with the label tenacity

Turf Type Identification - Is This Poa?

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I have some light-green colored (new) patches of grass in our backyard right now.  When I pull up a section of it, this is what it looks like below:  There is A LOT of root-structure at play, isn't there?  Is this a weed - like the dreaded Poa Annua?  Or...could this be Kentucky Blue Grass that I germinated and planted last year?  The color...of the patch (lime-ish green) has me worried that it is Poa. Any grass experts out there that can confirm what I'm dealing with here?  And, what I should do? One thought I had was to try an application of Tenacity?  It doesn't harm KBG and turf-type Tall Fescue .  So, it if does *anything* on this grass, that tells me it is Poa? 

Winter Nimblewill In Lawn Progress Report - January 2023

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This past season, I finally figured out that our backyard was infested with a warm-season grass/weed called Nimblewill and came up with a plan to treat it in place while not doing a full cool-season grass renovation.  That started with using a post-emergent spray called Tenacity  - which caused the Nimblewill to white-out and die .   Once that ran its course, I then began a project using a pre-germination seed technique followed by a project to overseed the lawn with a mix of Kentucky Blue Grass and Tall Fescue .  Which...after some watering... resulted in a bunch of new germination . And, while I was happy with the result in the Fall with new, green grass filling in plenty of bare spots, I knew the real, important results, would be visible once the lawn went totally dormant.  That's because, the Nimblewill is a warm-season grass and totally dies back once the temperature drops.  Which, historically have left us with a bunch of bare spots in the lawn and other areas with white,

Nimblewill Turning White from Tenacity - August 2022

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Earlier this month, I was able to (finally and properly) identify that I have a creeping bentgrass problem in my backyard that includes a spreading (and concerning) amount of Nimblewill .  I decided to apply Tenacity as a post-emergent in an attempt to begin to control the grassy weed ahead of overseeding this Fall.  I mixed up a couple of gallons and applied it with a pump sprayer.   What does it look like after a week?  I'm seeing what I hoped to see:  some white emerging from the bentgrass.  See below for some photos showing the white tips.  Turns out, I have A TON Of creeping bentgrass back there that needs to go.  Look at all this white showing up: Everything I've read tells me that Nimblewill control isn't a one-shot deal.  It will take a few applications the first season and a multi-year treatment plan with herbicide control (Tenacity as a selective post-emergent).   But, so far...I'm happy.  And seeing signs of progress here.  My plan is to lower the deck on m

Tenacity As Post-Emergent to Kill Nimblewill - August 2022

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Last week, I shared here on my lawn diary a little breakthrough.  For the past 18-or-so months, I've been watching a grassy weed creep along and begin to migrate from my far backyard to closer to our patio.  And, after reading about various grassy weeds, I came to the (initial) conclusion that I was dealing with Poa Annua - or an annual Bluegrass.  It was showing some of the signs like being lime green.  But, after observing the lawn this Spring, I noticed that the parts affected green'd up later and seemed to handle the Summer better than the balance of my Bluegrass.   I was planning on doing a complete renovation in the back by killing EVERYTHING off and starting from scratch with a new layer of seed this Fall.  As I prepared for that, I went in to see if I could learn more about what was back there and how much I *really* needed to kill off vs. just overseed. When I went in and pulled a mature stalk of grass, I discovered it had this sort of horizontal branching structure. 

Using a Surfactant With Weed Killer - August 2022

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 I've grown my lawn care practice in various ways over the years based on things I've learned from the Web (mostly YouTubers) including how I (now) cut my lawn pretty high (5 on the mower), have added Tall Fescue to our KBG lawn to try to provide it more heat resistance and even using a blue pattern spray in my herbicide treatments to 'see' where I've sprayed .  My most recent project is focused on controlling a new (to me) warm season weed grass called Nimblewill. In order to do that, I'm going to use a selective herbicide named Tenacity.  Tenacity seems like pretty great stuff and can be applied as either a pre-emergent or a post-emergent.  The difference is that you have to also use a surfactant if you're going the post-emergent route. For this Nimblewill control project, we're talking post-emergent and actively growing grass. That meant that I had to go find a surfactant.  The most readily available one was this Liquid Harvest version available on Am

Nimblewill Control and Lawn Over-seeding Plan - August 2022

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Yesterday, I posted about the lawn care breakthrough that I had in properly identifying and diagnosing our lawn with hosting a warm-season bent grass weed called Nimblewill .  In that post, I talked about trying to work my way through a process to both treat the Nimblewill, help some of our other tough spots and overseed the backyard this late Summer/early Fall. Back in March of this year, I posted my 2022 lawn care schedule and included the idea of a renovation in the back.  Turns out...(if you read yesterday's post on Nimblewill ), I don't have Poa and don't need a renovation.  I just need to remove the Nimblewill and overseed.  Here's how I'm approaching the process below. My plan starts with controlling the Nimblewill through a herbicide application.  Followed by aeration to part of my lawn then overseeding and finally amending parts of the backyard with compost to help improve the conditions.  I touched on some of this in my 2022 lawn schedule post from this S