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Mount Washington Arboretum · Baltimore, MD

Sage

Salvia officinalis

Perennial

Care at a glance

☀️ LightFull sun (6–8 hrs)
💧 WaterLow to moderate; very drought tolerant
📅 Days to maturity75–100
🌀 LifecyclePerennial
🗺 Hardiness zoneZones 4–8
🌡 Temperature-20°F – 85°F
↕ Height12–30"
↔ Spread18–24"
📏 Spacing18" apart

Where is it growing?

2026Herb 4

Soil

pH: 6.0–7.0  ·  Well-drained, sandy; dislikes wet roots

Nutrients & Fertilizing

Low

Baltimore Planting Windows

Based on last frost ~May 1, first frost ~Oct 31 (Zone 7a)
🌱 Direct sow (spring)Apr 1 – May 1
🪴 Transplant out (spring)Apr 15 – May 15

About this plant

Evergreen subshrub with woody stems, grayish leaves, and blue to purplish flowers. Member of the mint family, native to the Mediterranean region. Long history of medicinal and culinary use.

Germination

10-21

How to plant

Plant seeds about 1/8 inch deep and 24 to 30 inches apart. Germinate in 10-21 days. Require full sun. Hardiness Zone: 5-8.

Growing tips

Sage thrives in well-draining soil and full sun with minimal fussing once established. Water deeply but infrequently—allow the soil to dry between waterings, as sage is drought-tolerant and rots easily in wet conditions. Fertilizing is rarely needed; overfertilizing encourages soft growth and weakens flavour. Sage doesn't require staking or special support. Common issues include root rot from waterlogging (improve drainage or reduce watering) and powdery mildew in humid conditions (ensure good air circulation and avoid wetting foliage). Occasionally spider mites or whiteflies appear; spray with water or neem oil if needed. Pinch back the plant regularly to encourage bushier growth and prevent it from becoming leggy.

Harvesting

Begin harvesting leaves once the plant is established, typically 60–90 days after planting. Pinch or cut the top 1–2 inches of stems regularly throughout the growing season for best flavour and to maintain a compact shape. Harvest in the morning after dew dries for maximum oil content. Sage dries exceptionally well: hang bundles in a warm, airy spot for 1–2 weeks, then strip leaves and store in an airtight container away from light for up to a year. For fresh use, harvest as needed and refrigerate in a damp paper towel for up to a week. Don't strip all leaves at once; leave at least half the foliage to keep the plant vigorous.

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