Lantana
One of the brightest and most heat-resistant bedding plants, it may also be grown in containers and window boxes.
Zinnia
Warm-weather plants, zinnia flowers do best in temperatures between 21 and 27 °C (70 and 80 °F). It is crucial to plant them after the local final date of frost since they are not frost-tolerant.
Coneflower
Coneflowers are incomparable natural perennials from Saskatchewan for hot weather since they may produce single, double, or triple flowers throughout the warmer months.
Petunia
Petunias are not only heat resilient, but their vivid flowers also provide your yard the ideal amount of colour.
Marigold
Marigolds tolerate heat and poor soils, plus they produce vibrant blooms for bouquets and vases.
Salvia
Zone 9 Salvias are tender ones that don't tolerate temperatures below the mid 20s F. They may be shrubby in warmer climates and act as herbaceous perennials in colder zones.
Stonecrop
Nearly all stonecrops are frost hardy down to -20F (zone 5), and a selection will tolerate -30F (zone 4).
Bougainvillea
With proper care, bougainvilleas are known to last year-round when planted outdoors. They thrive in the heat and can withstand colder temperatures.
Verbena
Temperature range of 16 to 30 degrees celsius is ideal for sowing and germination. Too much heat and too much cold can kill verbena plant.