How to Grow Salvia splendens
Salvia splendens
Salvia splendens
flowerSalvia splendens, commonly known as scarlet sage, is a tender perennial flowering plant prized for its vibrant tubular flowers that bloom in shades of red, pink, purple, or white. Native to Brazil, it is typically grown as an annual in temperate climates and attracts hummingbirds and butterflies with its nectar-rich blooms. The plant produces dense spikes of flowers that can bloom continuously from early summer until frost.
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Example Salvia splendens timeline · Pittsburgh, PA (Zone 6b)
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Plant Salvia splendens
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 blooms
Around Jun 16≈ 60 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 10-11 year-round; grown as annual in zones 2-9
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Seedling
2-3 weeksTiny leaves emerge with cotyledons; plant develops first true leaves slowly
Keep soil consistently moist. Maintain warm temperatures 70-75°F. Provide bright indirect light. Avoid damping off by ensuring good air circulation.
Vegetative Growth
3-4 weeksPlant develops multiple stems and foliage; bushy habit forms with increasing leaf surface area
Pinch back growing tips when plant reaches 6 inches tall to encourage bushier growth. Continue consistent moisture. Begin feeding with balanced fertilizer every 2-3 weeks.
Flowering Initiation
2-3 weeksFirst flower spikes begin to form at stem terminals; buds appear densely packed
Increase phosphorus-rich fertilizer to support flowering. Maintain full sun exposure. Continue regular watering and deadheading to encourage more blooms.
Peak Flowering
8-12 weeks or until frostDense spikes of tubular flowers fully open in vibrant colors; continuous blooming through season
Deadhead spent flowers regularly to prolong blooming. Water consistently. Apply diluted fertilizer every 10-14 days. Stake taller varieties if needed.
Senescence
Final stage before frost or season endGrowth slows as temperatures drop; flowers diminish in frost conditions
In frost-prone zones, dig up plants and bring indoors or allow to die back. In warm zones, cut back by half in fall to rejuvenate for next season.
Common Pests
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Spray with neem oil or insecticidal soap; introduce parasitic wasps; remove heavily infested leaves
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Increase humidity by misting; spray with water to dislodge; use miticide if severe
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Remove with alcohol-soaked cotton swab; apply neem oil; prune affected stems
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Improve air circulation; apply sulfur dust or fungicide; remove infected leaves; avoid overhead watering
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Ensure excellent drainage; do not overwater; repot in fresh soil if detected
Uses
Hummingbird & Pollinator Magnet
WildlifeScarlet sage's tubular red flowers are highly attractive to hummingbirds, butterflies, and other pollinators throughout the growing season. The nectar-rich blooms provide essential food sources for migrating hummingbirds and native bees. [source]
Edible Flowers
CulinaryThe flowers are edible with a mild, slightly peppery flavor and are used as garnishes in gourmet cuisine and decorative additions to salads and beverages. They add both visual appeal and subtle flavor notes to culinary presentations. [source]
Traditional Herbal Use
MedicinalIn traditional Brazilian and folk medicine, Salvia splendens has been used to support respiratory health and as a general tonic. The plant contains flavonoids and essential oils with antioxidant properties. [source]
Cut & Dried Flower Arrangements
CraftThe flower spikes are excellent for fresh and dried floral arrangements, adding vibrant color and texture to bouquets. They can be air-dried by hanging upside down for use in long-lasting arrangements. [source]
Garden Color & Landscaping
HouseholdScarlet sage provides season-long ornamental value in borders, containers, and cottage gardens with its striking red blooms. It serves as a focal point for late summer and fall garden color when many other plants fade. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Salvia splendens is grown for ornamental flowers rather than harvest, but for cut flowers, cut stems in early morning when flowers are fully open. Cut just above a leaf node to encourage branching. Flowers last 5-7 days in a vase with fresh water changed daily.
Fun Facts
- 🌱 Scarlet sage is native to Brazil and was named Salvia splendens for its 'splendid' appearance; the genus Salvia encompasses over 900 species worldwide.
- 🌱 Hummingbirds can visit scarlet sage flowers dozens of times daily, and the plant's nectar production actually increases when hummingbirds visit, demonstrating a co-evolutionary adaptation.
- 🌱 Salvia splendens can be grown as a tender perennial and will return for multiple years in frost-free climates, potentially becoming woody and shrub-like over time.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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