While many of us may be sweltering in the uncomfortable heat of summer many of the plants in our gardens will also be suffering and need special care to ensure their survival. But there are other flowers that just love the heat and are happy to open their blooms to the hottest of summer suns. The twenty-five high heat flowers are described in an article which I found on the Weekend Gardener website.

Summer is here, and all over the globe people are experiencing above average temperatures. Areas that normally have warm summers are having Sahara-like conditions with low rainfall and high heat.

Many of us are having 90? to well over 100?F (32? to 38?C) days and very warm nights. Because of this, many of our normal colorful summer annuals have faded in their vigor and beauty.
The good news is that while many plants and flowers seem to be fainting away, there are others that sing merrily along through the mid-summer heat.
The tough-as-nails flowering plants that we are going to share with you will provide the color you want, while tolerating the most intolerable summer heat. And more good news, we are going to give you many more ideas than just your regular zinnias and marigolds that are always mentioned in warm weather flower articles, because we want you to have more options and better choices.
So without further ado, here are more than 25 suggestions to replace stressed and faded plant material in your landscape that will also conserve water, while looking like a million dollars in full, hot sun.
Blanket Flower (Gaillardia pulchella)

This is an annual gaillardia. It is a low-growing, colorful plant in warm colors that appears fringed. Stems are single and arise from a taproot. Plant is 1.5 to 2 feet (.45 to .61 m) tall and 1 ft. (.3 m) wide. Flowers come in warm shades of red, yellow, and gold. Easy to grow. Come in single and double flowered varieties.
Cockscomb (Celosia cristata)

Celosia cristata ‘Armor’ series, doesn’t have the side branching ability of other celosia, but it makes 1 giant, crested flower. It will get 2 feet (.61 m) across and about 2 and 1/2 feet (.61 to .76 m) tall. It likes full sun. They come in red, purple, orange, and yellow.
A great tip for celosia: don’t buy them when they are root bound in the pot, so check carefully before you buy. Once they get root bound, they don’t grow back out.
Cosmos bipinnatus and C. sulfureus

Cosmos grows best in the worst conditions – hot and dry. This is why cosmos is one of the best possible annuals for tough to grow climates like Texas, Georgia, and Arizona. It comes in an abundant varity of sizes from dwarf that are only 4 to 8 inches (10 to 20 cm) tall, to medium that are 12 to 24 inches (30 to 60 cm) tall, to very tall that are 2 to 3 feet (.61 to 1 m) tall. It makes a good cut flower, and re-seeds readily.
Comes in many flower colors such as Picotee, Red, White, Yellow, Gold, Crest Red, Candy Stripe, Pink, Dark Pink, and more. The are profuse bloomers and always covered in flowers.

See more at Weekend Gardener