How to Grow Scarlet Sage
iNaturalist
Scarlet Sage
Salvia splendens
flowerScarlet sage is a vibrant annual flower known for its brilliant red tubular flowers arranged in dense spikes that bloom from summer through fall. Native to Brazil, it's a popular ornamental plant prized for its intense color and ability to attract hummingbirds and pollinators. The velvety foliage and long flowering period make it a reliable choice for gardens, borders, and containers.
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Example Scarlet Sage timeline · Pittsburgh, PA (Zone 6b)
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Plant Scarlet Sage
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 blooms
Around Jun 16≈ 60 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 6-10; can be grown annually in cooler zones 3-5
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Seedling
2-3 weeksTiny seedlings with 2-4 true leaves emerge 10-14 days after planting
Keep soil moist and provide bright light. Maintain 70-75°F temperature. Thin seedlings if overcrowded.
Vegetative Growth
3-4 weeksPlant develops bushy foliage with multiple stems and dark green leaves
Pinch back growing tips to encourage branching and fuller shape. Keep consistently moist. Begin fertilizing biweekly.
Bud Formation
2-3 weeksFlowering spikes begin to form at branch tips; buds appear densely packed along stems
Continue regular watering and feeding. Ensure 6+ hours of direct sun. Remove any competing weeds.
Flowering
8-12 weeks (summer to frost)Tubular scarlet flowers open sequentially along spikes; plant reaches full ornamental beauty
Deadhead spent flowers to prolong blooming. Water regularly. Feed every 2 weeks with balanced or slightly lower nitrogen fertilizer.
Decline & Frost Sensitivity
Until first frostBlooming slows as temperatures drop or frost approaches; plant dies back
In frost-free zones, may bloom year-round. In cooler zones, treat as annual. Collect seeds before frost if desired.
Common Pests
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Spray foliage with water to dislodge; use neem oil or insecticidal soap if severe. Increase humidity around plants.
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Use yellow sticky traps; spray with insecticidal soap or neem oil weekly until controlled.
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Spray with strong water stream; use insecticidal soap or neem oil for severe infestations.
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and
Hand-pick, especially at night. Use copper barriers or diatomaceous earth. Remove debris where they hide.
Uses
Edible Flowers
CulinaryThe striking scarlet flowers are edible and can be used as garnish for salads, desserts, and cocktails, adding visual drama and a slightly minty flavor to dishes. [source]
Hummingbird & Pollinator Magnet
WildlifeThe tubular red flowers are irresistible to hummingbirds and attract bees and butterflies, making scarlet sage an excellent choice for wildlife gardens. [source]
Traditional Herbal Use
MedicinalRelated Salvia species have long histories in traditional medicine. Scarlet sage tea has been used to soothe sore throats and support respiratory health, though research is limited. [source]
Cut Flower Arrangements
HouseholdThe tall, striking spikes of flowers last 1-2 weeks in a vase and are excellent for fresh floral arrangements, adding bold color to bouquets. [source]
Dried Flower Crafts
CraftDried spikes can be used in dried arrangements, wreaths, and other craft projects, retaining their vibrant red color for several months. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Scarlet sage is grown for ornamental flowers rather than harvest, but you can cut stems for fresh arrangements at any time. Cut from the top to encourage branching. To collect seeds, allow flowers to mature and dry on plant; harvest seed heads when brown and dry, typically in fall.
Fun Facts
- 🌱 Scarlet sage was a favorite plant of Victorian gardeners and remains one of the most recognizable bedding plants in American gardens.
- 🌱 The plant is native to the Mexican highlands and Brazilian tropics, where it grows as a perennial but is treated as an annual in most temperate zones.
- 🌱 Hummingbirds can remember every flower they've visited and the time it takes for flowers to refill with nectar, and they actively seek out scarlet sage for its abundant nectar production.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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