Heat Tolerant Flowers | greenthumbgardenclub

Heat-Tolerant Flowers for South Texas

Planting heat-tolerant annuals ensures that your borders bloom all season long.

Cleome Hassleriana

(spider flower)

3 ft. to 5 ft. Rose, pink, purple, white

Notes: Easy to grow from seed; self-sows.

Lantana

1 ft. to 6 ft., varies with species.

Red, pink, orange, cream, lilac, purple, white, and bicolors. Notes: Buy transplants. Berries are toxic; look for nonfruiting varieties.

Can't Tolerate: Rich soil; night temps below 60˚F

Petunia

6 in. to 24 in., varies with cultivar. All colors. Notes: Deadhead for continuous bloom.

Can't Tolerate: Humidity; frequent rain

Tagetes (marigold)

6 in. to 4 ft., varies with species. Maroon, orange, yellow, cream. Notes: Easy to start from seed. Deadhead for continuous bloom.

Can't Tolerate: Rich soil

Verbena Peruviana (Peruvian verbena)

3 in. to 6 in. Red, pink, white. Notes: Good as groundcover and on slopes; performs in partial shade. Can't Tolerate: Wet soil

Verbena Tenuisecta (moss verbena)

8 in. to 12 in.Pink, lavender, purple, white. Notes: Shear plants to 2 in. tall if they become leggy. Can't Tolerate: Poor drainage

Nicotiana (flowering tobacco)

8 in. to 5 ft., varies with speciesRose, pink, green, purple, white. Notes: Easy to grow from seed. Some types fragrant; some will self-sow.

Can't Tolerate: Wet stems and leaves (water from below)