day lily removal/ unkown weed/plant - Knowledgebase Question

cornwall, on
Question by amandaaj20
April 23, 2007
Hi, I would like to know how to get rid of day lilies. I dug out 3 garbage bags of roots /bulbs last year only to have them back this year.They were a breeding ground for mosquitos and there weren't very many flowers. I put that black weed barrier paper down to try and kill them, but they are still growing fast. Also, I have something that starts out as a little deep red stalk, and grows to 5 feet or so before draping over. Very strong plant. Once its a few inches high, it changes in color to an olive green. Leave sprout out the sites. When broken in half, its hallow, like a dry peice of bamboo. I can't get rid of these either. I know theres lots of things that will kill these, prays/powders, but my concern is I have my veggie garden in that same back half of the yard, so anything that goes in the soil there needs to be safe for my veggies. Thanks in advance


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Answer from NGA
April 23, 2007

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The weed you describe could be either stinging nettle or giant hogweed. Both have hollow stems and both can cause skin irritation in sensitive individuals. Since you're concerned about using chemicals in close proximity to your veggie garden, you have two options. One is to hand weed; dig, pull, cut to the ground as often as necessary to keep the weeds from sprouting up again. Another option is to place barriers, just as you have already done. A third option is to use a vegetation killer such as Round-Up. The active ingredient in Round-Up degrades rather quickly and does not travel in the soil. So, spot treating the weedy growth will work, without the concern of the chemical getting to your veggie garden.

Best wishes with your weed eradication project!

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