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Our 20+ year old lawn needs to be replaced. The proposed landscaper/gardener suggested that we mow the lawn to an inch length, and spray with "Ortho GroundClear Weed and Grass Killer" which has 40% Ammonium Nonanoate and no RoundUp. The label doesn't indicate that one can lay down sod right after the lawn is removed and soil prepared, but it also doesn't indicate one cannot.

Second issue is that there's a nice lemon tree close to the grass, but the label does not indicate a caution need a fruit tree.

Anyone here familiar with this product and can answer these two points?

Thanks.

Here is the use label for that chemical https://biosafesystems.com/wp-content/uploads/2020/08/axxe-broad-spectrum-herbicide_label.pdf

ILENGINE said:

Here is the use label for that chemical https://biosafesystems.com/wp-content/uploads/2020/08/axxe-broad-spectrum-herbicide_label.pdf

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"Not approved for use in California" ???

What a headache to read! Do you agree that this chemical will destroy old grass and weeds and allow placing new sod after soil rototilling and additions? Is it safe to use to the drip line of a fruit tree?

Label says does not migrate through the soil and does not translocate through the plants. So you should be able to plant after tilling and should be fine in the drip line of fruit trees, just need to avoid contact with any part of the tree that is above ground. Will kill currently growing grass and weeds, and could damage your fruit trees if contact with leaves, or bark.

Thank you. I missed that part. This chemical sounds ideal for this purpose.. Labels are difficult to read

1. So for 1,500 sq. ft. of lawn with weeds, how much of this concentrate is needed.?
2. Is it okay to add surfactant and blue marker dye just like the additives to Tenacity?

MowerMark said:

Thank you. I missed that part. This chemical sounds ideal for this purpose.. Labels are difficult to read

1. So for 1,500 sq. ft. of lawn with weeds, how much of this concentrate is needed.?
2. Is it okay to add surfactant and blue marker dye just like the additives to Tenacity?

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No mention of surfactant use so I wouldn't worry about it Some chemicals have the surfactant already included It looks like you will need about 1 gallon of mixed products containing 8 ounces of chemical for less than 1 inch grass, 12 ounces for 1-4 inch grass/weeds, and 16 ounces/pint for over 4 inch grass /weeds. I think the dye would be fine so you can see coverage. But from the instructions you need to use 10-15 psi and spray to wet, but not running off.

It doesn't sound as effective as " glyphosate". Disregarding my suggestion, which chemical(s) would you use to kill the lawn and weeds and yet allow immediate replacement of the elderly lawn with fresh sod?

There are very few broad spectrum non specific herbicides on the market that are not soil residual And glyphosate(roundup) has been used so much over the last few years in ag that there are a lot of weeds that are glyphosate resistant.

Really? Didn't know that. So which chemical do you recommend to perform this task of effective destruction and immediate new sod replacement?

Basically your main two options are the AXXE and its generics, and Roundup and its generics. There are probably other herbicides but could run into the applicator license required to purchase.

Where may I find a video and/or text on the best methods of removing old lawn, preparing the remaining ground, and installing sod?