Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




16214 posts

Uber Geek

Trusted
Subscriber

#153931 13-Oct-2014 11:36
Send private message

This white headed grassy weed's growing in patches all over my lawns, I'd like to get rid of it. Anyone know what it is, and how to get rid of it?




View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2


16214 posts

Uber Geek

Trusted
Subscriber

  #1152672 13-Oct-2014 11:43
Send private message

After finding a weed database it looks like annual poa. Apparently very widespread and difficult to remove as things that control it also kill most grasses :(

265 posts

Ultimate Geek


  #1152680 13-Oct-2014 11:49
Send private message

Looks like you got the correct ID by yourself. In the future try the NatureWatch NZ site: http://naturewatch.org.nz/ it is really good for getting IDs on any organism, and your photos and location data are used to create distribution records around the country.

On your weed, I would try to do something soon even manual removal beore those seedheads spread it further.

 
 
 
 




16214 posts

Uber Geek

Trusted
Subscriber

  #1152710 13-Oct-2014 11:55
Send private message

Yeah I'll dig it out today before I mow the lawn. I end up pulling out most of the larger weeds, which generally means having to plant new grass seed there.

Stu

Hammered
5486 posts

Uber Geek

Moderator
Trusted
Lifetime subscriber

  #1152713 13-Oct-2014 11:56
Send private message

It's not mine, Officer! Never seen it before in my life! Oh, not THAT weed..

I concur. Probably have to kill the whole area and re-sow with grass seed, or manually dig it out and that'll be painstaking and prone to failure anyway I guess. Not to mention the holes in the lawn. Hate that stuff. :-/




Keep calm, and carry on posting.

 

 

 

Click to see full size Click to see full size




16214 posts

Uber Geek

Trusted
Subscriber

  #1152728 13-Oct-2014 12:01
Send private message

I keep grass seed here, and I have plenty of soil, compost, etc to grow new grass in. I've probably dug 50-75 weeds up and resowed over the past year, you can't tell so long as you use the same type of grass seed. I still have some patches from the grass that didn't take in winter, you really need to sow on moist warm days in spring/summer, as seed needs to be kept moist to germinate - if it dries out after getting wet the germination rate drops heaps.

488 posts

Ultimate Geek

Trusted

  #1152778 13-Oct-2014 12:56
Send private message

You could still mow those heads off.

Instead of using a normal composting method, try putting weeds mowed down this way into a water filled bin (or black bag lined bin) so that the plant matter rots through. The result can then be added to regula composting but the seeds will be useless.

Good luck, but yeah, act now, those seeds look ready to go.



16214 posts

Uber Geek

Trusted
Subscriber

  #1152785 13-Oct-2014 12:59
Send private message

I don't compost grass, I just chuck it out.

I probably have 25-50 of these weeds around the lawn, I probably can't actually get them all. I can pull out the worst ones, and I can mow the lot, but if I rip them all out I'll have a lot of patches in the lawn. I guess that's not a problem, I just wait for wet weather and sow some grass seed the day before.

This weed makes seed early in it's life cycle, so the seeds are already everywhere.

 
 
 
 


3267 posts

Uber Geek

Trusted

  #1153068 13-Oct-2014 18:59
Send private message

Remind me what grass you have?




You can never have enough Volvos!




16214 posts

Uber Geek

Trusted
Subscriber

  #1153100 13-Oct-2014 19:41
Send private message

Fine fescue and another slightly more hardy type.

http://www.tuigarden.co.nz/product/tui-superstrike-superfine-lawn-seed

Sorry on phone can't do hyperlink

3267 posts

Uber Geek

Trusted

  #1153856 14-Oct-2014 18:32
Send private message

Ah, that's right.  I've got tall fescue because Auckland is too humid for fine fescue, but you could go with fine fescue.  And Wool-Gro only does tall fescue.

On tall fescue I know you can use TurfClean and LawnClean.  One of them works better than the other as it is a mix of (I think 3 of) the herbicides used on tall fescue.  Not perfect, but it is about the best you can do with herbicide.  It is worth looking into those, Google the ingredients of those herbicides and see if it is suitable for fine fescue (product label and web site does not say).  The other recommended method is to dab a bit of Roundup on the weed.  You will kill some grass, but if you are careful then it will be less damage than pulling the weeds up.  Fescue does not grow runners so you will only kill where you apply.

NZ is a bit hard to get recommendations for herbicides, and the ones that work are only available in commercial qty and price.  What I did was to Google it and look at mainly US results, then take note of the herbicide and find a local product containing it.  Fescue is a bit easier than other grasses as herbicide tends to run off it rather than puddle on the leaves.  And pre-germination herbicides (which affects seeds) are also useful for stopping annual weeds.




You can never have enough Volvos!


346 posts

Ultimate Geek

Trusted
Lifetime subscriber

  #1153926 14-Oct-2014 20:40
Send private message

As an ag science graduate from some decades ago, I feel obliged to point people to an excellent resource regarding weeds from my alma mater.  Its very well maintained by Kerry Harrington and colleagues at Massey and has the added benefit of being developed from a NZ perspective.  Not solely focussed on pasture - also covers off dealing with weeds in lawns where appropriate (e.g. see the link below to poa annua and difficulty of dealing with it in fine turf).  Takes me back to my weed collection required as part of my degree in those days - found it recently in my parents' garage roof space - still intact in box after 30+ years!!  Scary!

http://www.massey.ac.nz/massey/learning/colleges/college-of-sciences/clinics-and-services/weeds-database/annual-poa.cfm





"It is useless to attempt to reason a man out of what he was never reasoned into."
— most commonly attributed to Jonathan Swift, author/theologian



16214 posts

Uber Geek

Trusted
Subscriber

  #1153942 14-Oct-2014 21:13
Send private message

Niel: Ah, that's right.  I've got tall fescue because Auckland is too humid for fine fescue, but you could go with fine fescue.  And Wool-Gro only does tall fescue.

On tall fescue I know you can use TurfClean and LawnClean.  One of them works better than the other as it is a mix of (I think 3 of) the herbicides used on tall fescue.  Not perfect, but it is about the best you can do with herbicide.  It is worth looking into those, Google the ingredients of those herbicides and see if it is suitable for fine fescue (product label and web site does not say).  The other recommended method is to dab a bit of Roundup on the weed.  You will kill some grass, but if you are careful then it will be less damage than pulling the weeds up.  Fescue does not grow runners so you will only kill where you apply.

NZ is a bit hard to get recommendations for herbicides, and the ones that work are only available in commercial qty and price.  What I did was to Google it and look at mainly US results, then take note of the herbicide and find a local product containing it.  Fescue is a bit easier than other grasses as herbicide tends to run off it rather than puddle on the leaves.  And pre-germination herbicides (which affects seeds) are also useful for stopping annual weeds.


I think I might just have to live with it. The only one that works is only available in industrial quantities it seems :(


edge: As an ag science graduate from some decades ago, I feel obliged to point people to an excellent resource regarding weeds from my alma mater.  Its very well maintained by Kerry Harrington and colleagues at Massey and has the added benefit of being developed from a NZ perspective.  Not solely focussed on pasture - also covers off dealing with weeds in lawns where appropriate (e.g. see the link below to poa annua and difficulty of dealing with it in fine turf).  Takes me back to my weed collection required as part of my degree in those days - found it recently in my parents' garage roof space - still intact in box after 30+ years!!  Scary!

http://www.massey.ac.nz/massey/learning/colleges/college-of-sciences/clinics-and-services/weeds-database/annual-poa.cfm


Yeah that's where I found it, linked to it above too, thanks :)

346 posts

Ultimate Geek

Trusted
Lifetime subscriber

  #1154496 15-Oct-2014 14:51
Send private message



Yeah that's where I found it, linked to it above too, thanks :)


Whoops - never looked at the link!!  embarassed





"It is useless to attempt to reason a man out of what he was never reasoned into."
— most commonly attributed to Jonathan Swift, author/theologian

3267 posts

Uber Geek

Trusted

  #1155726 15-Oct-2014 22:03
Send private message

Looks like in the USA it is called Kentucky Bluegrass, and looks like most herbicide for controlling it is the same as for controlling Tall Fescue (so would likely also affect fine fescue).  I've got some of this in my lawn which is probably why it is not going away with herbicide.  But not much and I've managed to pull a fair bit out by hand.
https://en.wikipedia.org/wiki/Poa_pratensis




You can never have enough Volvos!




16214 posts

Uber Geek

Trusted
Subscriber

  #1155838 16-Oct-2014 07:59
Send private message

That does look pretty similar, and yeah no easy way to control. I can't easily remove it by hand, it's everywhere, and it'd mean digging up a significant fraction of my lawn. Using the wipe on roundup may be the best idea I've heard so far, then fixing up the damage. But it'll probably just come back anyway.

 1 | 2
View this topic in a long page with up to 500 replies per page Create new topic




News »

Freeview On Demand app launches on Sony Android TVs
Posted 6-Aug-2020 13:35


UFB hits more than one million connections
Posted 6-Aug-2020 09:42


D-Link A/NZ extends COVR Wi-Fi EasyMesh System series with new three-pack
Posted 4-Aug-2020 15:01


New Zealand software Rfider tracks coffee from Colombia all the way to New Zealand businesses
Posted 3-Aug-2020 10:35


Logitech G launches Pro X Wireless gaming headset
Posted 3-Aug-2020 10:21


Sony Alpha 7S III provides supreme imaging performance
Posted 3-Aug-2020 10:11


Sony introduces first CFexpress Type A memory card
Posted 3-Aug-2020 10:05


Marsello acquires Goody consolidating online and in-store marketing position
Posted 30-Jul-2020 16:26


Fonterra first major customer for Microsoft's New Zealand datacentre
Posted 30-Jul-2020 08:07


Everything we learnt at the IBM Cloud Forum 2020
Posted 29-Jul-2020 14:45


Dropbox launches native HelloSign workflow and data residency in Australia
Posted 29-Jul-2020 12:48


Spark launches 5G in Palmerston North
Posted 29-Jul-2020 09:50


Lenovo brings speed and smarter features to new 5G mobile gaming phone
Posted 28-Jul-2020 22:00


Withings raises $60 million to enable bridge between patients and healthcare
Posted 28-Jul-2020 21:51


QNAP integrates Catalyst Cloud Object Storage into Hybrid Backup solution
Posted 28-Jul-2020 21:40



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.