ᐅ What is this, and how can we get rid of it?

Created on: 4 May 2018 18:30
A
aytex
Hello Forum

This year, we surprisingly have a large-leaved type of grass in our lawn. What is it, and how can we get rid of it so that we have only fine grass again? See photos. Thank you
Grass tufts in green garden soil, close-up

Close-up of dense grass in the garden

Green grass in garden soil with moss and weeds
aytex5 May 2018 00:00
Baustelle2016 schrieb:
That is quackgrass. Congratulations. The best method is to dig it out. Fertilizing and scarifying won’t do much against it. This type of grass usually grows faster than the surrounding lawn. If you are somewhat consistent, you can get rid of the quackgrass temporarily. However, it will probably return later as airborne seeds.
Best regards

Digging it out... we have so much of it that if I dug it all out, I’d end up with a cratered landscape 🙂 I guess the only option is to repair with topsoil and then reseed those areas?
K
Knallkörper
5 May 2018 09:04
I tend to agree more with Curly and don’t think it’s couch grass. You could start by applying fertilizer and overseeding to help the finer grass varieties grow back. I’m not a fan of herbicides, and they probably won’t work against couch grass if they’re safe for the lawn. You could use glyphosate to kill everything and then till the soil, but then you won’t have a fully green lawn again until September.
aytex6 May 2018 10:25
Knallkörper schrieb:
I tend to agree with Curly and don’t think this is quackgrass. You could start by applying fertilizer and overseeding to encourage the finer grass varieties to grow back. I’m not a fan of herbicides, and they probably wouldn’t help against quackgrass anyway if they spare the grass. You could use glyphosate to clear everything and then till the soil, but then your lawn won’t be really green again until September.

I carefully dug up samples from three different spots; attached are the photos. I was expecting to see the typical long white roots characteristic of quackgrass, but I can’t find any. So, are these definitely not quackgrass?
Two grass sods with roots lying side by side on a smooth surface.

Lawn root ball with soil and spread-out roots after digging up

Grass root ball with soil and fine roots on garden soil

Three grass turf clumps with roots on a white background
Y
ypg
6 May 2018 11:09
This is not couch grass.
Couch grass consists of individual shoots that spread efficiently through rhizomes.
You can only get rid of it by digging out every tiny piece of the root or by otherwise creating a barrier, for example with a dense lawn layer.

A lawn is made up of a collection of grasses. I also believe this is a type of grass that is now spreading more than others due to minimal maintenance.
Mycraft6 May 2018 19:40
I would agree with that. We experienced the same. Simply mowing, scarifying, fertilizing, mowing, and so on will naturally resolve it over time.
aytex8 May 2018 08:55
Phew, I’d say we got lucky again. Started scarifying yesterday, and will fertilize by the end of the week… now we just wait. I’m hoping that the lawn mower robot, already waiting in the shed, will help the lawn recover quickly. Regards