What type of plant is this?

Question

I am a new home owner. Most of the plants were dead when I moved in. I started watering to see if I could revive them and this outcropping in two areas came up with these plants scattered around a dead bougainvillea plant. I don’t know what they are and they tripled in size in the 2 weeks I started watering them. They are near 6 almost dead Lantana plants and a tree that may be a Palo Brea.

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Answer 1

The shrub appears to be Lantana camara, a different species from the lavendar trailing lantana. You will know for sure when it blooms in spring.
https://www.gardeningknowhow.com/ornamental/flowers/lantana/lantana-plants.htm

The tree appears to be a Palo verde or Palo brea, but I am unable to zoom in on the photo for detail.

http://www.amwua.org/plants/