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Rex from San Antonio, Texas writes

How long after applying SedgeHammer Herbicide can I plant seeds in my vegetable garden?

I'm planning to plant a vegetable garden where there is currently nutgrass in the soil. If I apply SedgeHammer, how long would I have to wait to plant?

Answer:

SedgeHammer may not be the best option for you.  It is meant more for nutsedge control in turf grass and it cannot be used in or around a vegetable garden or anything edible. It remains in the soil for up to 3 years so the manufacturer recommends that you not plant anything edible in an area where SedgeHammer has been applied for at least 3 years.  For nutsedge control in or around a vegetable garden it is recommended to spot treat the sedge with a glyphosate or RoundUp type product directly.  With this type of product it is only necessary to wait 2-3 weeks after application to plant vegetables or anything else.  We would recommend Roundup QuickPro 1.5 oz. packs for ease of use.

Also, you should not just pull the plants. This will just split off the rhizome and more new plants will grow from the nutlets left in the soil. To completely remove the plants, you would need to completely dig out the nutlets so that new plants do not grow from them. Many folks will still till the soil after using RoundUp to be sure there are no remaining nutlets that will grow new plants.

Answer last updated on: 03/08/2016

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