This has been a great help for me, I love these leaves. I usually use Quickrete Instant Mortar Mix, I don't have to add sand to it just water. I have several bags of that around, do you think it would work? I have to drive 60 miles to get to a Lowe's or HD and the small hardware stores don't carry Portland. It's either Quikrete or the store brand and those all have the gravel in it.