Ag lime driveway?

Geo-TH,In

Well-known Member
My neighbor lady decided to cover her driveway with Ag lime in an attempt to keep weeds from growing in her gravel drive.

She had 40 tons hauled in and tailgate spread.

I'm impressed how well it packed in after a few rains.

Looks almost as level as a concrete drive.

Will lime prevent weeds from growing?
 
Lime will neutralize acidic soil. Moss for sure will not grow where lime has been applied as it likes acidic conditions. I wouldn't guarantee that weeds won't grow, but if it has packed down well then the chances of weed growth are reduced
 
George,

My country place is a few miles south of you on strip mined land. My drives are various sized crushed limestone with fines to aid the packing. Where there isn't heavy traffic the grass and weeds grow much faster and stronger in the crushed stone than they do in the adjoining soil.
 
Are you sure it is not lime sand instead of ag lime? Lime sand is what is used around here for heavy use cattle areas, such as water, or feeding. It does pack very well, and weeds don't seem to grow in it. But first of all, I believe most weeds don't 'like' high ph (lime) in the soil. Secondly, the lime (or lime sand) packs very tight compared to gravel, so weed seeds don't get a start or access to moisture or soil. Mark.
 



Ag Lime is powder. I get a 33 ton load every three years. After I have spread it there is always a little left here and there on the ground. When it gets rained on it turns into slurry. Only a very big all wheel drive truck would be able to drive through it. Apparently the lady had some type of crushed lime gravel delivered. Certainly not AG lime. It is pretty much the same idea as clay vs. gravel.
 
Weeds and grass will grow on a pile of lime, as far as being packed hard a dandelion will grow threw asphalt
 
Local limestone quarry that sells fine ground ag lime and gravel sells what they call Number 10 gravel its very fine and will pack to a certain extent.I've used it for mulch works good.
 
"Ag lime" these days is nothing more than finely crushed limestone. Calcium carbonate.

Used to be the lime was "slaked lime" or calcium hydroxide.

Crushed limestone is cheaper and less resource-intensive to produce. You just crush it, and limestone crushes easily. To make slaked lime you have to heat limestone in a kiln to make quicklime, then add water to make slaked lime.

So all the neighbor REALLY did was put down crushed limestone on their driveway.
 
Slaked lime was never used as ag lime, at least not commonly. Maybe you're thinking dolomite? But as far as I know, so-called ag lime has always been pulverized limestone.
 
(quoted from post at 10:11:06 05/24/22) Slaked lime was never used as ag lime, at least not commonly. Maybe you're thinking dolomite? But as far as I know, so-called ag lime has always been pulverized limestone.

I'm talking way back before they had machines that could pulverize the limestone as fine as it needs to be. Before that the only way to get it fine enough was to make slaked lime, because it pretty much fell apart on its own after the cooking process.
 

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