In hot weather, you may want to look at xeriscaping plants. Concrete pavers are fine, but creating the proper base for it is critical (so pavers stay in place). If you're going to do that yourself, look at youtube videos. Look at several different videos, because some don't show the proper way to do it. It's been so long that I'm sorry, I don't recall which videos I looked at when I did mine.

First I wanna say there just has to be something in those boxes lol otherwise it looks a bit strange. Cacti and other plants are heat resistant...look that up online not too difficult to find. I’ve seen cacti in planter boxes before, although other heat resistant plants may be more your style not sure. Cacti definitely would keep things from looking “she-shed” like tho lol. I’ve also seen someone who put fake flowers in those planter boxes before...they are making very realistic looking fake flowers these days, but you’d need to look in person to check if they looked good or not.

Btw I’m sure there are native plants and heat resistant plants that would survive just fine in your yard as well...maybe install drip irrigation to make watering something you’d dont even have to physically do??

Is your house straight in front of the shed?

Succulents will feel good in window boxes.

JD,

The storage shed is about half way behind the end of the house. You can see the left front from the street but even with that it is hard to see because of front yard landscaping. Drip irrigation would be hard to do because of the location of a water faucet.

I wanted to originally say succulents, but they aren’t as heat resistant as people think. They don’t require as much water it’s true, but not sure if they would survive in your extreme heat

Pavers could be lovely. Maybe a bit wider than 24”...walkways are usually about 3 feet wide. Also love the idea Elaine gave of xeroscaping. You could put in some pretty swirls

Be careful in making sure the paver base is strong and level if you plan to drive a riding lawn mower over them regularly.

How many people are going to notice or care if you use artificial succulents there and the same with some faux fern in pots underneath them.?

Faux Succulent Pick, 6.5" · More Info

Actually I thought about faux plants but was afraid, even with UVA protected plant products, they wouldn't hold up in the full sun. I have a window box on the house with artificial geraniums (designed for outdoor use) and the leaves turned faded purple in about a month. Autumn and holiday decorations hold up well...just struggling with floral ideas that will not fade! I would love to grow chives in the boxes but not sure they will even make it.