What type EE are they? Most all will take full sun with no problem. Maybe too much fertilizer and not as much water as you think.
Pour the water on til it's flooded. Watch to see how fast it drains. If it drains within 30 mins or so flood again.
This will help wash some of the fertilizer out as well as soaking the roots well.
If it's not draining then the soil needs to be amended.
The fertilizer is setting to close to the roots and not washing through causing burn. Use a garden fork or stick to punch holes all around the EE's so water can penetrate.
Add compost the best you can. After they go dormant consider digging them up and admending the soil really well and replant next spring.

Were they doing better last year in another location without full sun? I have to disagree with cactusfreak, because mine do better in partial shade. You're right, they do burn up quicker. Our Oklahoma and Texas sun is ferocious. Most plants that do well in other areas in full sun, do better in Oklahoma and Texas in part shade. We are in the same zone as Heronswood in Seattle, Washington, but our sun is hotter here. Zones don't always matter. I've learned to move my plants that wither or burn in full sun to part shade, and they do fine. Even in shade here, it is dry shade and they still have to be watered constantly. These plants are water lovers. I drive by houses in Oklahoma City and people have planted their EEs in full sun; the leaves are crisped and brown, and they just look unhealthy.

Good luck. You could try moving one of them and leaving one of them to do as cactusfreak suggests and see what the difference makes.

Susan

Thank you both. Last year they did great, had them in part shade. I think I will try moving one to the shade and see what happens.
Thanks again,D

They may still be establishing root systems. Try lots of water. Dry, sandy soil will be a problem in full sun, I would think.

'I have to disagree with cactusfreak'.
Please note I asked 'what kind'. And I said 'Most'.
My Xanthosoma aurea 'Lime Zinger' (aka mafaffa and Golden Delicious)and Colocasia esculenta fallax and affinis jeningsii do better and have a better coloring in part shade. The sun darkens the silver shading in fallax making it more green and the jeningsii looses the silver center and the black becomes faded and looks like Colocasia antiquorum 'Illustris' except for the height difference they would look the same.
And I agree that the sun is hotter in Texas than in Hot lanta. I've had the pleasure of visiting several times.
I grow Hosta in full sun but they get lots of water and never burn or dry up on the edges.
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Wow, cactusfreak - gorgeous plants, absolutely stunning! Sorry if I misunderstood you - sometimes I skim over the messages and miss things I would have caught had I been paying closer attention.

Can you tell us the identity of the first pic, and also which Hosta is that. I have one that looks identical that I inherited from a friend who passed away, and since I grow it in his memory, I'd really like to know what it is.

And that lovely swimming pool---you really do have an oasis there!

Susan

The large green ee is just the plain Colocasia macrorhiza. There are some Black Magic in the left corner but hard to see. Also have Colocasia 'Coffee Cups/aka Big Dipper. Everything in that bed returned this year except the Musa Zebrina.
The Hosta is Saint Elmo's Fire. It almost glows in the dark.

My Black Magic were doing well till this week. The soil was definately not dry, yet all the leaves wilted. All the other plants in the planting are fine. Should I move them to a different location. I am not going to be keeping it wet, only moist

That doesn't look like my macrorrhiza--the stems and leaves are held upright, no drooping. Have I mistaken this for something else? It's also very grass green.

MacDaddy - maybe it was too wet? Good idea to try moving it before the bulb rots. You might want to take a look at the bulb and make sure there is no rotting on it.

Susan

You are thinking of Alocasia macrorhiza. also spelled macrorrhiza and other ways.
Colocasia macrorhiza is usually referred to as an esculenta. But the names are getting crossed in the trade.
Maybe Laura can straighten it out as to what it should be. Even on the Hawaiian plant list web site they have it listed as Colocasia macrorhiza but it looks like an esculenta to me. Macrorhiza are also called uprights or uppees because of the leaves pointing upwards.
My upright.
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Another one. The older leaves do droop.
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Oh my gosh, I just looked at your page, and the pics you just sent. That is my DREAM HOUSE/GREENHOUSE/POOL/GARDEN!

Thanks for the clarification. I had a feeling I had it mixed up. I love the upright. Mine is just now starting to grow (it's about 2' tall). The first picture you sent looks a lot like my fontanesii, which is why I wondered (darker, drooping foliage).

It seems you've been at this a lot longer than I. Also, they just began to realize that some of the colocasias and alocasias are hardier further north than originally thought. Same thing with some of the begonias. They are finding out that some of the species are hardier in the ground when originally, they were considered tropical only. They may have to redefine "tropical" for some of these plants. B. boliviensis, which used to be a "terrarium" only plant, is now hardy to zone 7b, too. I may attempt to grow that in the ground here. It's kind of a weeping begonia with tubular red blooms.

I LOVE YOUR HOUSE AND GARDEN! Where do you find time to keep it so neat? I struggle to deadhead, plant, fertilize, water, thus my yard is always cluttered with tools, hoses, fertilizer bags, potting soil, mulch, etc., etc.

Susan