Good things about Osteo: Need almost no maintenance, water need is minimal, flowers are pretty dazzling in a mass. Controls erosion on a slope.

Bad things about Osteo: Can grow out of bounds and can look poor out of flower.

There's a reason this plant is used on freeway plantings and slopes (see good things above).

If you want to freshen it up, just use a straight shovel and chop out parts. It is easy to remove part or all of it.

Whether you want to replace it is up to you really.

Thank you! Looks we will have to replace them altogether.

Is Myoporum a good substitute? Or Gazania? We need a groundcover that's low growing, drought tolerant, half-sun, do not attract bees (like Aptenia) and rodents (there were lots of grains under osteo, I'm suspecting some little animal made it their home before).