Sweet corn in garden is done. Lots of quackgrass between the stalks. If I spray Roundup to kill the weeds does it also kill the quackgrass seeds? Pulling the quackgrass by hand will only spread a lot of seeds at this point.

Roundup will not kill the seeds, I am pulling up quackgrass in the lawn this week, some seeds left is better than all of them left.

burning works pretty good. you will still be out there with your hoe though next year.

Pay the kids a dollar a pound of quack pulled up.

Roundup does a good job on quack grass, just not the seeds.

I have not tried it yet, but have thought about burning paper or cardboard on top of garden soil to kill new weed seeds.. Has anyone tried it? How well did it work? Did it hurt soil fertility?

Keith

There just isn't a good answer for weeds and unwanted grasses. Roundup will kill the growing plant, but then more seeds will sprout and come up in the same place. Then you need a pre-emergent to kill the sprouting seeds. I fight dandelions, sandburs, puncturevine, bindweed. I'd like to know how to kill sandburs. It looks like grass, then this time of year they produce the burs at the last minute. Argh.

In the end an old fashioned hoe is an indispensable garden tool. Aerate the soil and kill weeds. Yes it is labor intensive but the reward is worth it.

Quack grass spreads through rhizomes so unless you dig up every piece of root it will come back. If the grass is actively growing round up should do the trick but if it's currently in that lag phase probably not so much. Might be better off mowing it then spraying regrowth. That should take it down into the root system and kill it out. I have found with enough tillage my quack grass in the garden is no longer a problem though but it was just a small patch.

I tarped my garden area for 10 weeks, killed everything....except quackgrass, and yellow nut sedge, those rhizomes love you long time....

Killing the growing part is easy with round up, but to keep it down dual will help but atrazine is the best just dont plan on planting much else other than corn there for a year.

Quackgrass spreads as much if not more due to the rhizomes that travel underground like raspberries etc. Round up will kill the quack and the roots systems and rhizomes as well. If the quack if quite far along and you spray it the plant will die and the seeds will become ripe even quicker. It will pull easily after spraying it and you can burn the above ground dead vegetation.

Bryce

Nuke it from orbit just to be sure.....