Calling all writers, especially those who wax poetic! If you have a way with words, here's your chance to put pen to paper and try your hand at writing an award-winning piece for us. Find all the details on our contest page.

Red Firecracker Plant, San Carlos Red Firecracker Plant, Round-Leaf Firecracker Plant 'San Carlos'

Russelia rotundifolia

Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee) (Info)
Genus: Russelia (russ-EL-ee-uh) (Info)
Species: rotundifolia (ro-tun-dih-FOH-lee-uh) (Info)
Cultivar: San Carlos
View this plant in a garden


Tropicals and Tender Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Unknown - Tell us


36-48 in. (90-120 cm)


24-36 in. (60-90 cm)


USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:


Bloom Time:

Mid Summer

Late Summer/Early Fall



This plant is resistant to deer

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

From seed; direct sow after last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


This plant has been said to grow in the following regions:

Mc Calla, Alabama

Altamonte Springs, Florida

Brooksville, Florida

Cape Coral, Florida

Carrabelle, Florida

Miami, Florida

Miramar Beach, Florida

Mount Dora, Florida

Ocala, Florida

Oldsmar, Florida

Orlando, Florida

Saint Augustine, Florida

West Palm Beach, Florida

New Orleans, Louisiana

Opelousas, Louisiana

Alvin, Texas

Dripping Springs, Texas

Houston, Texas

Katy, Texas

Mcallen, Texas

San Antonio, Texas (2 reports)

show all

Gardeners' Notes:


On Mar 26, 2016, jillrkjill from West Palm Beach, FL wrote:

I live in south Florida My firecracker bush has white spots on the stem. It is otherwise healthy. Does anyone know how to get rid of the spots?


On Jun 10, 2011, cheeky8 from Cape Coral, FL wrote:

After my firecrackers were in ground for about 2 weeks, the plants started turning brown. Can someone please tell why this would happen and what I should do to fix it, if possible. Thanks.


On Nov 19, 2010, amygirl from Lafayette, IN (Zone 5a) wrote:

It makes a great border plant. It spreads by its root system and stems will take root if they touch the ground. Full sun to partial sun is best for good blooming.