15 Heat Tolerant Flowers | Flowers that can Tolerate Heat

Heat tolerant flowers grow well in full sun and can survive scorching heat. We have enlisted below some of our best picks for flowers that grow well in full sun.

Are summers scorching in your region? Is the weather so hot that it’s killing your flowering plants? No need to worry as there are flowering plants out there that can tolerate heat and full sun. These flowers thrive under direct sunlight and will bring a plethora of colors to your summer gardens. So without further ado, here are the heat-tolerant flowers that can survive the heat and bloom in full sun.

Hibiscus

Hibiscus flower in full sun

Scientific Name: Hibiscus rosa-Sinensis

Hibiscus is a stunning flowering plant that’s native to subtropical and tropical regions and thus heat tolerant. It can tolerate temperatures as high as 95 degrees F in summers. The large and colorful flowers make a decorative addition to both home and garden.

Bottlebrush

bottlebrush flower close-up

Scientific Name: Callistemon spp.

Bottlebrush gets the unique name because of the flower spikes that resemble Bottlebrush in shape. It’s a popular dessert perennial and is drought resistant to a degree as well. All you need is full sun and protection from cold to grow this stunning heat-tolerant flowering plant.

Lantana

lantana blooming in full sun

Scientific Name: Lantana camara

The cluster of small flowers comes in vibrant yellow, orange, white, red, pink, blue, or purple. Lantana is an excellent choice for both hanging baskets and containers. Also, you can grow them as a border plant or ground coves in warm regions with full sunshine. It’s considered invasive in some areas, so make sure to contact the local authorities before planting.

Cosmos

cosmos flower in summer garden

Scientific Name: Cosmos bipinnatus

The long blooming period, low maintenance, and easy propagation make the cosmos a popular flowering plant. Growing on tall, slender stems, the flowers resemble daisies and attract pollinators to the garden. Coming in stunning shades of red, yellow, orange, white, and pink, they do well in poor soil and can tolerate heat as well.

Lavender

lavender blooming in field

Scientific Name: Lavandula angustifolia

This aromatic plant is the show stealer and has many medicinal uses as well. Tall flowering stalks are covered with fragrant lavender blooms come summer and spring. It has low watering needs and does well in full sun with well-draining sandy soil.

Zinnia

zinnias flowering in flower bed

Scientific Name: Zinnia elegans

These little beauties bring a plethora of colors to any surrounding, be it home or office. Zinnias are versatile and can be grown as ground cover, containers, or cut flowers. Also, as zinnias have a shallow root system, it’s in the list of flowers that grow well in shallow pots!

Lemon Verbena

lemon verbana blooms close-up

Scientific Name: Aloysia citrodora

Also known as lemon beebrush, lemon verbena is an attractive landscape flowering plant with sweet lemon flavor. Clusters of tiny purple and white flowers adorn the plant in spring and summer. It has a shrub-like growth habitat and, once established, is both drought and heat tolerant.

Marigold

marigold blooms close-up

Scientific Name: Tagetes spp.

Bring golden, yellow, and orange hues to your summer and autumn flower gardens by planting marigolds. It’s a popular flowering plant that blooms for an extended period. Deadheading will promote new blooms and aid in the prolonged blooming of marigolds.

Blanket Flower

Scientific Name: Gaillardia aristata

Gaillardia aristata or blanket flowers growing in bunch

The large and showy blooms of blanket flowers come in brilliant shades of yellow, orange, pink, and red. Excellent for borders and containers, this flowering plant can grow to 24 inches tall with a spread of 20 inches.

Princess Flower

Princess Flower or Tibouchina urvilleana close-up

Scientific Name: Tibouchina urvilleana

The exotic purple flowers of Lasiandra or Purple glory bush attract hummingbirds and other pollinators. Growing to around 7 feet tall, it has a shrub-like growth habitat. Blooming profusely from late spring to winters in tropical regions, it flowers throughout the year.

Pentas

Pentas Lanceolata blooms close-up

Scientific Name: Pentas lanceolata

The five-pointed shape of the blooms is the reason Pentas is also called Egyptian starflower. Coming in the vibrant hues of white, red, or pink, Pentas bloom all summer long. Well suited as container or bedding plant!

Penstemon

Penstemon blooms close-up

Scientific Name: Penstemon spp.

The stunning tubular flowers grow on tall stalks and are also known as beardtongue. The flowers attract butterflies, bees, and birds and are well suited for temperature zones of the western United States. Flowers come in the shades of lavender, salmon, pink, red, and white.

Hardy Geranium

hardy geranium blooms close-up

Scientific Name: Gerenium

Made up of five petals, the Geranium blooms have distinctive veining and come in white, pink, purple, or blue shades. Depending on the variety, it can tolerate direct fun to partial shade. Don’t confuse them with another plant which also has the common name “Geranium” but is botanical “Pelargonium x hortorum.”

Cigar Plant

Cigar flowers or Cuphea ignea blooms

Scientific Name: Cuphea ignea

Due to the resemblance of tubular flowers with a lit cigar, it goes by the interesting names of Cigar flower, firecracker plant, or Mexican cigar. Reddish orange flowers have purple petals at the end with a thin white rim. It does not tolerate frost and does well in warm regions.

Sage

Salvia (sage) growing in residential garden

Scientific Name: Salvia

With so many salvias out there, you get to choose from several salvias that differ in appearance and smell. The long-lasting blooms attract pollinators and grow on tall flowering stalks. Salvias are tolerant to the summer heat and that’s why is in our list of heat tolerant flowers.

Stonecrop

Scientific Name: Sedum

sedum blooms close-up

Sedum is a hardy perennial plant with thick succulent leaves that can tolerate heat, drought and grows even poor soil. There are mainly two sedum types low growing and upright; upright sedums produce clusters of tiny reddish-pink flowers. Make sure to plant them in well-draining soil in full sun.

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