Out in the country they spread wild flowers to keep soil down and this gives a colourful blanket. No cost to maintain?
There are plants that go with only a little water that will spread quickly. It must be something that does not spread to Golf course.
Grass would burn in sun - fire risk - and needs water and cutting , succulants are local and flower. In J11 a few of us are planting bushes and plants in open area. We have a couple that are green and purple all the year around cost 7 euros . So if everyone planted something in the garden it would soon be like the brochure.
Open area low level succulants that produce red and orange flowers, take a cutting grow in pot and plant in open area. A few hundred would soon spread