Thistle Plants

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  1. Pet-Friendly Thistle Weed Killer
  2. How Do I Kill Thistle (Picker Plants)?
  3. How do you kill thistle?
  4. milk thistle plants in veggie garden
  5. What plant is this?
  6. Using cornmeal to kill weeds
  7. controling grass and weeds
Asked by Anonymous on April 14, 2011
Pet-Friendly Thistle Weed Killer

The family dog cuts its paws on thistle weeds in the large backyard, leading to complicated infections. There are too many to dig out. I need a safe thistle weed killer, without chemicals. I made a vinegar, salt, soap solution but this only kills the tops, not the roots. Can you help? Also, rabbits are becoming uncontrollable as well and their debrisĀ is causing theĀ dog to be sick.

ANSWERS
Nikki
Certified GKH Gardening Expert

The only non-chemical way to get rid of thistle is to kill the leaves as soon as you see them. The roots will eventually die due to lack of sun.

This article will help with rabbits:
https://www.gardeningknowhow.com/plant-problems/pests/how-to-keep-rabbits-out-of-gardens.htm

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Asked by harley on May 19, 2011
How Do I Kill Thistle (Picker Plants)?

How do I get rid of thistle weeds (picker plants)? They have over taken my flower bed. I tried digging them out last year. Thought I got the roots, but this year they are even worse than last year.

ANSWERS
Heather
Certified GKH Gardening Expert

They are very hard to get rid of, but it can be done. This article will help:
https://www.gardeningknowhow.com/plant-problems/weeds/canada-thistle-control.htm

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Asked by donnacookrn on April 19, 2015
How Do You Kill Thistle?

I believe the thistle came from manure I used for fertilization in planting the red maple. It has now taken over the entire flower bed. There are also daylilies and hostas in the bed. This spring the thistle has spread into the surrounding grass as well. The thistle forms purple flowers at the top that die off like dandelions to spread. I’ve tried several popular store brands of weed killers that haven’t worked, any ideas?

ANSWERS
shelley
Certified GKH Gardening Expert

You have either the bull or canada thistle. I can't quite tell from the photo, but I am leaning towards it being a canada thistle. You can identify for certain using the two following links:

Once you have determined which thistle it is, review the appropriate article below and recommended treatments:
https://www.gardeningknowhow.com/plant-problems/weeds/bull-thistle-control.htm
https://www.gardeningknowhow.com/plant-problems/weeds/canada-thistle-control.htm

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Asked by dincraig@gmail.com on July 20, 2015
Milk Thistle Plants in Veggie Garden

My neighbor has three milk thistle plants growing in her veggie garden. We live in a rural area where we raise cattle, sheep and horses. I have also been reading that it is quite an invasive plant. Is this true? As we raise sheep, should we be concerned about this?

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert
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Asked by Esper-of-tropica on March 15, 2016
What Plant Is This?

So today my family and I had finally went in the backyard to tucker out our dog when we stumbled across this plant. According to one of my family members, it did not sting to the touch, although it was quite prickly. So, does anyone know what sort of plant this is?

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

This is a thistle weed.

You will want to remove these from your garden.
Gloves will likely be necessary!

https://www.gardeningknowhow.com/plant-problems/weeds/canada-thistle-control.htm

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Asked by Kalmiopsis48 on June 29, 2016
Using Cornmeal to Kill Weeds

How thick does one need to spread the cornmeal? We have almost an acre heavily infested with burweed and bur clover with a few star thistle mixed in. I’d like to prevent the seed from growing next time around.

Martha
mmartha61@yahoo.com

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

20 pounds per 1000 square feet is the application rate used in the Iowa State University research test.
Please read the following links to give you more information and determine if the cornmeal is the best choice of weed control for you.

I would also encourage you to contact your local Country Extension Office to inquire on any information on control of these weeds specific to your region. They are a valuable source of information for these questions.

I have included a link to locate your nearest office.

https://www.gardeningknowhow.com/special/organic/cornmeal-in-the-garden.htm

http://extension.oregonstate.edu/gardening/corn-gluten-meal-did-not-prevent-weeds-germinating-osu-study

https://www.gardeningknowhow.com/plant-problems/weeds/control-of-lawn-spurweed.htm

https://www.gardeningknowhow.com/plant-problems/weeds/getting-rid-of-knapweed.htm?utm_source=ReviveOldPost
https://www.gardeningknowhow.com/extension-search

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Asked by Anonymous on March 12, 2017
Controling Grass and Weeds

How can I control the grass, thistles, and weeds that grow among my tiger lilies? Can I spray any type of weed, grass killer that won’t kill the lilies? Thank you

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

Pulling the weeds and using mulch to suppress the weeds in the future is the safest method.
If you remove them on a regular basis before they send out seeds you can start to eliminate them.
Any weed killer, whether natural or chemical, will kill weeds but also will kill your flowers if it comes in contact. The contact can be from direct spray or from overspray.

Here are some links with more information.

https://www.gardeningknowhow.com/plant-problems/weeds/how-to-keep-weeds-from-the-flower-bed-out-of-your-lawn.htm
https://www.gardeningknowhow.com/special/organic/weed-it-and-reap-how-to-make-your-garden-more-appealing-without-chemicals.htm
https://www.gardeningknowhow.com/plant-problems/weeds/pre-emergent-herbicides.htm
https://www.gardeningknowhow.com/plant-problems/weeds/using-herbicide-in-gardens.htm
https://www.gardeningknowhow.com/plant-problems/weeds/using-organic-herbicides.htm
https://www.gardeningknowhow.com/plant-problems/environmental/herbicide-plant-damage.htm

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