Views: 148, Replies: 3 » Jump to the end

Givenup
Jul 15, 2016 7:44 AM CST
I have thistle taking over my garden / flower bed . I have tried everything and talked to many landscape people and to no avail still have them . How can I get them to stop growing . Have pulled from the roots dug them up and every week they keep coming back more and more . Am lost don't know what else to do
Name: Lin
Florida (Zone 9b)
Region: United States of America Morning Glories Region: Florida Houseplants Charter ATP Member I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
Image
plantladylin
Jul 15, 2016 8:08 AM CST
Hi Givenup, Welcome!

Canada Thistle (Cirsium arvense) is considered a pest by many and very difficult to get rid of. You can try to control the spread by continually cutting the plants back at the base rather than trying to pull or dig them out. Thistle has a very deep root system and when you try pulling or digging them up, small pieces break off and remain underground so the plants will re-grow. I've read that thistle does not like fertilized soil so I wonder if fertilization of the area would help kill it in your garden beds? Something like Roundup will kill thistle but Roundup is a harsh chemical and will kill all the other plants in the vicinity as well!
~ Eat, Sleep .... Play in the dirt ~
Name: Porkpal
Richmond, TX
Charter ATP Member I was one of the first 300 contributors to the plant database! Keeper of Poultry Farmer Roses Raises cows
Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier
porkpal
Jul 15, 2016 8:13 AM CST
If you are not opposed to using chemicals, a glyphosate herbicide (like Round Up) wiped on their leaves will kill the existing plants, and a pre-emergent herbicide will prevent their seeds - and all other seeds in the bed - from germinating. If the bed is idle, you can cover it with tarps/plastic and sterilize the soil.
Porkpal
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
Jul 15, 2016 9:34 AM CST
Givenup said:I have thistle taking over my garden / flower bed . I have tried everything and talked to many landscape people and to no avail still have them . How can I get them to stop growing . Have pulled from the roots dug them up and every week they keep coming back more and more . Am lost don't know what else to do


Welcome! Is it possible for you to post a picture of the thistle, leaves, stem and flowers if it has any so that we can figure out what kind of thistle it is?

« Garden.org Homepage
« Back to the top
« Forums List
« Ask a Question forum
You must first create a username and login before you can reply to this thread.

Today's site banner is by dirtdorphins and is called "Dianthus 'Nyewood Cream'"