We have a patio of flagstones in which it was laid in sand. Originally we planted moss to grow in-between the flagstones. It looked great for awhile but then weeds and grass grew in the moss, thereafter it didn’t look so nice. We pulled up the moss to put something more permanent in-between the flagstone. After doing a little research, I’m a bit confused as what to do. It seems it is not recommended to use a sand-cement mixture as it will eventually crack, because the stones was laid on a bed of sand. So, after reading your comments about DG I was wondering if this would be a good solution. Any comments you have would be greatly appreciated. Also, we live in Oregon were winters can be a bit wet.
How wide are those cracks? and what do you use your patio for? I assume since you had planting there you don’t care if chairs get stuck in the cracks or not.
DG should work fine. Because you don’t have a hard base underneath, I bet you’ll have to add additional DG every year or couple of years. Just push it as hard as you can into those cracks and I would add the hardener to help it out.