How to Grow Tuscan Blue Lavender

Tuscan Blue Lavender

Lavandula angustifolia 'Tuscan Blue'

shrub

Tuscan Blue is a striking cultivar of English lavender known for its deep purple-blue flowers and compact, mounding habit. It produces abundant fragrant spikes of flowers from late spring through summer and is highly attractive to pollinators. This Mediterranean native is drought-tolerant once established and thrives in sunny, well-drained locations.

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Example Tuscan Blue Lavender timeline · Pittsburgh, PA (Zone 6b)

Plant Tuscan Blue Lavender
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Tuscan Blue Lavender
Late summer into fall

Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Tuscan Blue Lavender dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6-8 hours minimum daily; prefers 8+ hours

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Water: Water deeply but infrequently when establishing (first season). Once mature, extremely drought-tolerant; water only during extended dry periods. Overwatering is the primary cause of failure—allow soil to dry between waterings. In humid climates, reduce frequency further.

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Spacing: 24 inches

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Days to maturity: Blooms begin in the second month; full maturity and flowering 120-150 days from transplant

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Planting depth: Plant at the same depth as the nursery pot; avoid burying the crown

Soil

Type: Well-draining sandy or rocky loam

pH: 6.0-7.5

Amendments:

Perlite or coarse sand (for drainage) Gravel mulch Avoid heavy compost or peat moss

Growing Zones

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Zones 5-9; performs best in zones 6-8 with hot, dry summers

5a 5b 6a 6b 7a 7b 8a 8b 9a 9b

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Growth Stages

Establishment

6-8 weeks

Young transplant with small silvery-gray foliage and developing root system

Water weekly when soil is dry 1 inch below surface. Mulch lightly (1 inch) to retain moisture without touching the crown. Protect from excessive winter moisture in year one.

Vegetative Growth

4-6 weeks

Expanding mounding form with narrow silvery-green leaves becoming more prominent; plant becomes bushier

Continue weekly watering in dry spells. Do not fertilize; lavender prefers poor to moderate soil. Pinch back tips lightly if bushier growth is desired.

Flowering

8-12 weeks (May-July, with possible rebloom in fall)

Dense spikes of deep purple-blue fragrant flowers emerge from the foliage, creating a striking display

Reduce watering further; maintain dry conditions. Deadhead spent flower spikes to encourage continued blooming. Do not over-fertilize as this reduces flowering.

Post-Bloom & Hardening

6-8 weeks

Flowers fade to brown seed heads; plant transitions to a rest phase with reduced growth

Allow some seed heads to remain for wildlife and ornamental appeal. Reduce watering to minimal levels. In fall, cease fertilizing entirely to harden off for winter.

Dormancy/Overwintering

3-4 months

Plant enters dormancy with minimal visible growth; foliage remains silvery-gray year-round

Do not water during dormancy unless experiencing extreme drought. Avoid applying winter mulch in areas with good drainage (can cause rot). Light pruning in early spring before growth resumes promotes renewal.

Companion Planting

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Plant with:

Rosemary Santolina Catmint (Nepeta) Salvia Russian Sage Thyme Coreopsis Black-eyed Susan Alliums Ornamental grasses

Avoid planting near:

Moisture-loving plants (hostas, astilbes, ferns) Heavy clay soil plants Plants requiring frequent watering

Common Pests

Hand-pick beetles and larvae; spray neem oil if severe. Remove affected foliage. Encourage beneficial predators.
Increase air circulation; spray with water to dislodge. Use miticide only in severe infestations. Avoid overhead watering.
Improve drainage immediately. Reduce watering. In severe cases, propagate healthy cuttings and replant in fresh, well-draining soil.
Ensure excellent air circulation. Remove affected foliage. Rarely requires fungicide; prevention through proper spacing is key.

Uses

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Culinary flavoring and honey infusions

Culinary

Culinary lavender (L. angustifolia varieties including Tuscan Blue) can be used to flavor baked goods, honey, infused vinegars, and teas. The flowers have a subtly floral, slightly sweet taste that complements desserts, shortbreads, and herbal beverages. [source]

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Relaxation and stress relief

Medicinal

Lavender is widely used in herbal teas, aromatherapy, and essential oils for its calming properties. Linalool and linalyl acetate, the primary aromatic compounds, are credited with promoting relaxation and improving sleep quality. [source]

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Dried flower arrangements and potpourri

Household

Dried Tuscan Blue flowers retain their vibrant color and fragrance for months, making them ideal for decorative dried bouquets, wreaths, and potpourri blends that naturally freshen indoor spaces. [source]

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Essential oil and fragrance production

Craft

Tuscan Blue lavender is suitable for extracting or infusing essential oils, which are used in perfumery, soaps, and cosmetic products. The high aromatic oil content of this cultivar makes it valuable for fragrance applications. [source]

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Pollinator magnet

Wildlife

Tuscan Blue is highly attractive to bees, butterflies, and other pollinators. The abundant, nectar-rich flower spikes provide essential forage from late spring through summer, making it an excellent choice for pollinator gardens. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Cut flower spikes when 1/4 to 1/2 of the flowers along the spike are open, ideally in early morning after dew dries. Cut stems 6-8 inches long just above the leafy growth. For dried flowers, hang bundles upside-down in a warm, airy, dark location for 2-3 weeks. Harvest no more than 1/3 of the plant at once to maintain vigor.

Fun Facts

🌱 Tuscan Blue is one of the hardiest and most cold-tolerant lavender cultivars, surviving winters in zone 5 with proper drainage—making it more cold-hardy than many other Mediterranean herbs.
🌱 The name 'Tuscan Blue' reflects its origin in the lavender-rich Tuscan region of Italy, where lavender has been cultivated for centuries for perfume, medicine, and culinary purposes.
🌱 Lavender's intense fragrance is produced by volatile essential oils stored in tiny glands on the flower bracts; these oils are most concentrated just before flowers fully open, which is why experienced harvesters pick at that precise moment.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Crown Cultivar Deadhead Full Sun Mulch pH Pinch Back Transplant

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