The Need to Kill

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koozie Healdton, OK May 15, 2009

I REALLY need to get rid of my 4 o'clocks. They are beautiful and when I tried to dig them up to move them boy they really took off. Of course they grew where I dumped them also. THERE IS NO STOPPING THESES THINGS. At this point though their root system is destroying my front porch foundation, so I really need some help getting rid of them but would like to plant something in it's place.Thank you to anyone who can help me with this.

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dp72 Woodway, TX(Zone 8a) May 16, 2009

Spray them with a broadleaf weed killer or RoundUp to kill them down to the roots. Be sure there's no wind to carry the mist onto desirable plants. It will NOT contaminate your soil. After several weeks, when they are obviously dead, dig them out and plant something in their place. You can buy these products in a bottle with a trigger spray and you don't even have to do any mixing. Forget vinegar or other kitchen products. They won't kill the roots. Salt will contaminate the soil. So will kerosene and other toxic products that you might hear mentioned.

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gcorrier Lenoir City, TN May 16, 2009

I must agree with dp72. If you wish to use the area for other plantings round up or post is about the only way to go. Spray only the area you wish to kill off. Wait a week or two and make sure you have no more popping up. If so repeat process until you have no more coming up in a week. dp is also correct herbicides are not picky and will harm any thing down wind it lands on. If this must be done on a windy day use an old paint brush or BBQ brush to apply the liquid from a bowl directly to leaves. Destroy brush after and sterilize bowl. Yes you can use diesel or gas or old motor oil but you will have to dig up and haul off about 3 to 5 feet of bad soil in order to get anything else to grow there ever again. Unless you really like say Kudzu or dandelions. I don't believe anything kills them for long.

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