Wouldn't you figure with careful water scheduling, 'not watering too much, too frequently', would keep the Dymondia in check so that it won't get out of bounds to readily?

Answer: Yes, you should figure that. It's only as fast and abundant as the amount of water it gets. It's not very drought tolerant in full sun,… no more than 'mildly' drought tolerant in full sun.

Ours only gets water when it rains, which is seldom, and it still grows quickly. It is in full sun. We are in So. Cal.

Very well, which municipality, how far from the coast is the site?

When was it installed? I'm stoked it's working out that way.

I add your experience to my brain-info of referencing.

With all due respect, I'm going on what I've noticed with it over the years in the San Diego region from Pt. Loma/La Jolla to La Mesa, including a few yards I've used it in,.. one as a normal sized lawn in La Mesa, with flagstone for preferable walking around on, though it can all take walking on.

Also, the usual garden/horticultural reference books describe Dymondia garden-growing ability in similar regard as I've experienced.

And of course environmental exposure will make the difference on watering requirements.

I did see Dymondia on a north side of a property in the parking strip with mild sun exposure in La Jolla, and which I was told by the owners that they might water it at most frequent once every two weeks, during driest-warmest-hottest periods,… only by hand watering. That's what got my curiosity, that there wasn't any irrigation system, neither sprinkler nor underground drip.

Good to know of your experience, thank you.

This project is inland only about 10 miles from the Coast. Dymondia is very tough and water about every two weeks is about right. The soil it likes best is sandy or even a DG. I have acquaintances in the Landscape business in the San Diego areas you are speaking of and they use this ground cover frequently in their projects. Good Luck!