How to Grow Scarlet Sage Firecracker Black and Blue
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Scarlet Sage Firecracker Black and Blue
Salvia splendens 'Firecracker Black and Blue'
flowerScarlet Sage Firecracker Black and Blue is a striking ornamental cultivar featuring deep purple-black foliage with vibrant red flower spikes that contrast dramatically against the dark leaves. This hybrid variety is highly valued for its continuous blooming throughout the growing season and compact, mounding growth habit. It adds bold color and texture to flower beds, containers, and borders.
When should you plant Scarlet Sage Firecracker Black and Blue in your zone?
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Example Scarlet Sage Firecracker Black and Blue timeline · Pittsburgh, PA (Zone 6b)
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Plant Scarlet Sage Firecracker Black and Blue
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Scarlet Sage Firecracker Black and Blue blooms
Around Jun 6≈ 50 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9-11; grown as an annual in cooler zones
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Seed Germination
7-14 daysTiny seedlings emerge with cotyledons (seed leaves). Requires light, warmth (70-75°F), and moisture.
Keep soil moist, do not cover seeds, provide bright indirect light, maintain warm temperatures
Seedling Development
3-4 weeksTrue leaves appear; foliage begins showing dark purple-black coloration. Plants are still delicate and compact.
Maintain consistent moisture and warmth, thin crowded seedlings, provide grow lights if indoors, reduce watering slightly as plants strengthen
Vegetative Growth
4-6 weeksPlant develops into a bushy, mounding form with increasingly dark foliage. No flowers yet; focus is on leaf and stem production.
Continue regular watering, pinch growing tips to encourage bushier growth, apply balanced fertilizer every 2-3 weeks, harden off before transplanting outdoors
Flowering
8-12 weeks (continuing to frost in zones 9+)Vibrant scarlet-red flower spikes emerge from the dark purple-black foliage in striking contrast. Continuous blooming begins and continues until frost or winter dormancy.
Deadhead spent flowers regularly to encourage more blooms, switch to bloom-promoting fertilizer (higher phosphorus), maintain consistent watering, watch for pests attracted to flowers
Maturity & Maintenance
Ongoing until frost or 12+ months in zones 9-11Plant reaches full size and produces abundant flower spikes continuously. In warm zones, may establish as a tender perennial.
Continue deadheading and regular watering, reduce fertilizer frequency in late summer, cut back in fall/winter in warm zones, treat as annual in cooler climates
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with neem oil or insecticidal soap weekly; increase humidity around plants; remove heavily infested leaves
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Use yellow sticky traps; spray with horticultural oil or insecticidal soap; encourage beneficial insects like ladybugs
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Improve air circulation, avoid overhead watering, apply sulfur dust or potassium bicarbonate fungicide at first signs
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and
Handpick at night, use beer traps, apply diatomaceous earth around base, remove hiding spots like debris
Uses
Ornamental Edible Flowers
CulinaryThe bright scarlet flowers are edible and can garnish salads and desserts, adding bold color and mild peppery flavor to dishes. [source]
Traditional Herbal Tea
MedicinalSalvia species have been used in traditional medicine to make throat-soothing teas and herbal remedies for inflammatory conditions. [source]
Fresh & Dried Arrangements
HouseholdThe striking red flower spikes are excellent for fresh flower arrangements and can be dried for long-lasting crafts and home décor. [source]
Pollinator Attraction
WildlifeThe tubular red flowers are highly attractive to hummingbirds, bees, and butterflies, making this plant excellent for pollinator gardens. [source]
Dyed Textiles & Natural Color
CraftThe deep foliage and flowers can be used in natural dye processes for fabrics and craft projects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Deadhead spent flower spikes regularly by pinching or cutting just below the flower head to encourage continuous blooming. Cut flowers can be used in fresh arrangements—harvest when spikes are fully colored but flowers are still opening. In warm zones, can be cut back heavily in fall to rejuvenate growth.
Fun Facts
- 🌱 The 'Firecracker' series was developed specifically for its compact growth habit and dark foliage, making it ideal for container gardening and small spaces.
- 🌱 Scarlet Sage flowers produce abundant nectar and are one of the most reliable hummingbird magnets in the garden—a single plant can attract multiple hummers throughout the day.
- 🌱 Despite being commonly grown as an annual in most climates, this plant is a tender perennial and can live for several years in frost-free zones 9-11, becoming more woody and established over time.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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