Grass Growing in New Garden Beds - Knowledgebase Question

White Bear, MN
Question by MargaretGal
June 22, 1998
I made two new beds for plants this spring, one for veggies the other for annuals. To make the beds, I tilled the sod with a rototiller. Now, grass is growing between the plants (and veggies - corn, peppers, beens, lettuce, onions etc).
I spread some of the Preen product around the plants (supposed to cut down on weeding and fertilize at the same time), but that doesn't seem to control the grass that starts other than by seed. I am almost at the end of my rope. The grass is especially thick around my tomatoes. I have mulched with compost about 1 inch thick, but the grass grows through that too. Any ideas of what else to try? Come the fall, I can non-selectively apply something like Roundup or something to kill everything, but right now, I'd like to enjoy my flowers and actually get some veggies. Pls. advise. Thanks.


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Answer from NGA
June 22, 1998

0

Too bad we aren't like sheep that can eat pretty much whatever grows in front of them! I suggest that you put down a thick layer of newspaper (3-5 sheets deep) over the grass followed by a thick layer (2-3") of old hay. New hay may introduce more unwanted seed to your garden - old hay will have fewer seeds. Clip or mow the grass as close to your crop plants as possible before applying the mulch. If grass starts to grow through at any point, throw down some more of the mulch combination.

To control the grass for next year, lay something over the mulched beds to further smother the grass (corrugated cardboard, old planks, plastic or tarps). Do this as soon as you've removed all crop debris in the fall. The sooner you can start this, the better. Next spring remove the covers and till only the areas you will plant, leaving the rest of the mulch in place. Best of luck!

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