How to Grow Salvia Splendens (Scarlet Sage)
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Salvia Splendens (Scarlet Sage)
Salvia splendens
flowerScarlet sage is a tender perennial commonly grown as an annual, prized for its vibrant tubular flowers that bloom in dense, elongated spikes from summer through fall. Native to Brazil, it displays striking crimson, red, pink, purple, or white flowers atop deep green foliage. This heat-loving plant is popular in borders, containers, and mass plantings for its continuous color and attractive appearance.
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Example Salvia Splendens (Scarlet Sage) timeline · Pittsburgh, PA (Zone 6b)
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Plant Salvia Splendens (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 Salvia Splendens (Scarlet Sage) blooms
Around Jun 16≈ 60 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11 year-round; grown as annual in zones 3-9
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Seed Germination
7-14 daysTiny seeds beginning to sprout under warm, moist conditions
Keep soil moist and warm (70-75°F). Provide light for germination. Start indoors 6-8 weeks before last frost.
Seedling
2-3 weeksEmergence of cotyledons and first true leaves; delicate green growth
Maintain bright light, avoid damping off by ensuring good air circulation. Water gently. Thin seedlings to prevent crowding.
Vegetative Growth
3-4 weeksRapid expansion of foliage with bushy form; stems lengthening and leaves maturing
Pinch back growing tips to encourage branching and bushier shape. Continue regular watering and feeding with balanced fertilizer every 2-3 weeks.
Maturity & Senescence
Variable; until frost or end of seasonPeak flowering followed by gradual decline as temperatures cool or frost approaches
Continue deadheading. In zones 10-11, salvias may survive as perennials; cut back after flowering. In cooler zones, plants will decline with first frost.
Common Pests
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Spray with insecticidal soap or neem oil. Encourage beneficial insects. Use yellow sticky traps to monitor.
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Increase humidity and mist foliage. Spray with water to dislodge. Use miticide or neem oil if severe.
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Spray with strong water stream. Apply insecticidal soap or neem oil. Introduce ladybugs.
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Improve air circulation. Avoid overhead watering. Spray with fungicide or sulfur dust if needed.
Uses
Garden Borders & Mass Plantings
OrnamentalScarlet sage creates dramatic color impact when mass-planted in beds or used as a border edging. The tall spikes add vertical interest to mixed borders and complement cooler-toned plants. [source]
Edible Flowers
CulinaryThe bright tubular flowers are edible with a subtle herbal flavor and are used as garnish in gourmet cuisine to add color and a delicate salvia taste to dishes. [source]
Pollinator Attraction
WildlifeScarlet sage flowers are highly attractive to hummingbirds, bees, and butterflies, making it excellent for pollinator gardens and creating wildlife-friendly spaces. [source]
Cut Flower Arrangements
HouseholdThe long, colorful spikes are excellent for fresh and dried flower arrangements, adding height and vibrant color to floral designs. [source]
Traditional Herbal Uses
MedicinalIn traditional Brazilian medicine, Salvia splendens has been used for its potential antimicrobial and anti-inflammatory properties, though scientific evidence is limited. [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 ornamentally; deadhead spent flower spikes regularly to prolong blooming season. For seeds, allow some flowers to mature and dry on the plant, then collect seed heads in fall. Cut flowers can be used in fresh arrangements when spikes are in full bloom.
Fun Facts
- 🌱 Scarlet sage is native to the Brazilian cerrado and has been cultivated as an ornamental since the 1800s, becoming one of the world's most popular bedding plants.
- 🌱 The bright red flowers evolved to attract hummingbirds in their native habitat, and they are irresistible to hummingbirds in gardens worldwide.
- 🌱 Modern cultivars come in a stunning range of colors including red, pink, purple, white, and bicolors, all developed from the original scarlet species.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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