Alert: Limited Online Availability

Now that fall is here, we have limited our stock for online purchase. Find Monrovia plants at your local garden center. Pre-order for 2023 will be available later this year. ×

Heat Flash Cajun Hibiscus

Hibiscus rosa-sinensis 'Heat Flash'

Count on this spicy selection for vigorous glossy green foliage on a rounded form and stunning tropical blooms, even in the heat of summer. Large, radiant yellow-gold flowers have deep pink centers. An excellent container specimen, and tough enough for use in landscape borders and beds. A frost-tender evergreen.
There are very few rules in gardening, but perhaps the most important one is to work within your zone. Choosing plants that grow and thrive in your particular climate is the very first step toward having a beautiful garden . Learn More

Your climate might be too cold for this plant:


Full sun, Partial sun

Keep soil consistently moist.


Due to the seasonal nature of plants, availability at your local garden center is not guaranteed. Give them a call before visiting.

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More Information
Botanical Pronunciationhi-BIS-kus ROH-zuh si-NEN-sis
Average Size at MaturityModerate growing; reaches 4 to 6 ft. tall and wide.
Bloom TimeLate spring through summer.
Deciduous/ EvergreenEvergreen
Flower AttributeFlowers for Cutting, Long Bloom Season, Showy Flowers
Flower ColorYellow
Foliage ColorGreen
Garden StyleContemporary, Tropical
Growth RateModerate
Landscape UseBorder, Container, Hedge, Poolside, Privacy Screen
Light NeedsFull sun, Partial sun
Water NeedsModerate
Watering NeedsKeep soil consistently moist.
Companion PlantsPrincess Flower (Tibouchina); Lantana (Lantana); Fountain Grass (Pennisetum); Mandevilla (Mandevilla); Plumbago (Plumbago)

Thrives in warm, sunny sites with well-drained, enriched soils that have a slightly acidic to neutral pH. Avoid harsh afternoon sun in hot summer climates. Water deeply and regularly during first growing season to establish an extensive root system. Apply a general purpose fertilizer before new growth appears in spring.

This Plant's Growing Zones: 10-11

USDA Cold Hardiness Zone Map

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant