Dry poor soil in full sun.
Plants have many design features which enable them to cope with lack of water and hot situations. These may be any of the following:
Thick fleshy water storing leaves.
Furry or hairy leaves which both trap water and prevent its release.
Hard oily leaves which reduce water loss and reflect the suns heat.
The following are a few candidates for a hot spot:
- Saxifrages (not mossy types)
One final point. Any soil can be improved by adding organic matter like rotted manure or rich in compost. Thus increases the number of species which can be grown.