Lantanas generally do good in full sun. However, they require more water. Did you fertilize them in the colder times at the time of planting? From the photos it looks like heat killed them. Maybe you can try a 60% shade cloth

I've been waging war against the lantana in my yard for a couple of years now. In my experience, it does not tend to die back in the heat (although a good frost will kill the tops off, they'll still grow back from the root). I've been ripping the stuff up by the root as I see it, because even with giving it NO water it doesn't seem to die on its own.

I would suspect maybe you planted them a little late, or else didn't give them enough water to get well enough established. But if you like them, keep trying - eventually they'll dig themselves in and you'll never get rid of them ;)

Lantana is a horrible weed here in Australia. It seems to like a cooler moist root run ( Shade on the roots) and the top of the plant out in full sun.

Lantana stinks. It did yourself a favor. Dig them up and get a refund. If you got them from Home Depot, they'll refund if they die within a year.

Lantana can be prolific, especially "irene". I think "radiation" is the most hesitant to grow of any of the lantana. Your pictures show yours (one of which is radiation) as being next to a concrete wall and so the plants suffer doubly from heat. Give them some shade and have patience, as it takes time. It is so very hot here that we have to grow what will live here. Maybe planting catsclaw ivy by the wall would help, as the vine would cling to the wall and cool that area down.
catsclaw can be invasive but take your clippers and prune it when it gets shaggier than you want it to.

Good feedback from all, thank you. I'll ponder the suggestions. My comments for "discussion" on a few comments: NUTROCKER, planted in mid-May. KRIKLAF, Is it a nice problem?

I'm trying to do native AZ plants, very low maintenance, full sun--8+ hours, but hard to find, so I'm resorting to whatever I see in my area. I want low maintenance because I do not want to use a lot of or do a lot of water. I don't care much for the appearance of succulents. I'm also trying to co-exist with the 20 feral cats that have declared war on me. I'm new to it, so any suggestions and criticism are welcome.

Heck the birds keep depositing lantana in my yard everywhere. I wish it would die. It seems to like coming up around the under canopy of a tree. But direct sunlight has no effect that I can see. Since my place is flood irrigated it is watered just fine (not by choice) so I would suspect lack of water is what killed it, though perhaps shade would have helped if it was not established as well as a organic mulch.
Actually your leaves look like salt burn so are you watering infrequently to a 2 foot depth?

Natives? They are only zero maintenance once established.

http://www.nativeseeds.org/

http://www.desertharvesters.org/

https://arboretum.ag.arizona.edu/

http://www.dbg.org/

http://www.aznps.com/

Waiting on you now.

PS: Eat the cats.

This post was edited by Fascist_Nation on Sat, Jun 21, 14 at 18:23

I have one that I planted last year some time. Its not on a drip line. It did appear to die back over the winter as the leaves got really yellow. I started giving it a 10-count with the hose every morning and now its doing awesome. I believe lantanas need more water than we think they do.

P.S. I also have two in pots. The yellow is in the sun all day and is flowering nicely. The red is in part shade; I give it 2 quarts of water a day and now it seems to be happier too.

No water and poor planting location.

Hah - no, I wouldn't say it's a nice problem, but then I really don't like lantana, especially not the full-size pink/purple ones that spring up all over my yard. If you like 'em, by all means take advantage of their persistence!

I really like red yucca and ocotillo, but neither one is particularly fast-growing.