Growing Information

Growing zone guide
Growing Zone Zone 3, Zone 4, Zone 5, Zone 6, Zone 7
Sunlight Bright light
Type of Soil Neutral to alkaline
Mature Height 6 to 8 feet
Maintenance Level Low maintenance
Water Requirement Moderate watering (once a week)

Learn more about this plant

Additional Information
Growth Rate

Growth Rate:

  • Speed: Moderate grower.
  • Mature Size: 8-12 feet tall, 6-8 feet wide with a vase-shaped form.
Colorful Leaves No
Flowering Yes
Bloom Color Purple & Lavender
Ornamental Berries N/A
Disease resistant Yes
Cold Tolerant Yes
Heat Tolerant No
Drought Tolerant Yes
Deer Resistant Yes
Edible No
Wildlife Attraction
  • Attracts: Bees, butterflies, and other pollinators.
  • Resistant To: Deer and rabbits.
Self-pollinating Cross-pollinating
Seasonality
  • Foliage Season: Spring to fall (deciduous).
  • Flowering Season: Late spring (May).
  • Hardiness Zones: USDA Zones 3-7
Ideal For
  • Privacy screens
  • Cottage gardens
  • Pollinator gardens
  • Mixed borders
  • Cut flower gardens
Leaf Description
  • Color: Dark green.
  • Form: Broad, heart-shaped leaves with smooth edges.
  • Fall Interest: Turns yellow before dropping in fall.
Flower Description
  • Color: Deep purple to violet clusters.
  • Form: Large, conical panicles of small, tubular flowers.
  • Bloom Time: Late spring, lasting several weeks.
  • Fragrance: Richly fragrant, classic lilac scent.
Pruning & Maintenance

  • Timing: Prune immediately after flowering to maintain shape and encourage new growth. Avoid pruning in late summer or fall, as this may remove next year’s flower buds.
  • Method: Remove spent flower clusters, thin out old stems, and cut back damaged or weak branches to improve airflow and promote healthy blooms for the next season.
Water Needs

Watering Requirements:

  • Watering Frequency: Water regularly during the first growing season to establish deep roots. Once established, water during dry periods.
  • Soil Moisture: Prefers moist but well-drained soil. Avoid waterlogged conditions to prevent root rot.
Light Needs

Thrives in full sun. At least 6-8 hours of direct sunlight per day is necessary for optimal flowering and healthy growth. Partial shade can reduce bloom production.

Harvesting

Flower Harvesting:

  • Cut flower panicles when approximately two-thirds of the individual florets are open to ensure the best visual display and fragrance indoors.
  • Harvest in the early morning when stems are fully hydrated for maximum freshness and vase life.
  • Use clean, sharp pruners to cut stems, and immediately place them in cool water.
  • For improved water uptake (since lilac stems are woody), crush or vertically split the bottom inch or two of the stem before arranging.

Deadheading:

  • After the blooms fade, remove the spent flower clusters to maintain the plant’s appearance and redirect energy into root and shoot development rather than seed production.
  • This also helps reduce the chance of self-seeding and encourages a tidier shrub.

Seed Collection:

  • If not deadheaded, the plant will develop small, dry seed capsules by late summer or early fall.
  • Collect the capsules once they turn dry and brown, and gently open them to retrieve the seeds.
  • Note: Seeds may not produce plants identical to the parent cultivar due to hybridization.
Fertilizing

  • Fertilization Time: Fertilize in early spring before new growth appears.
  • Fertilizer Type: Use a balanced, slow-release fertilizer or organic compost to promote healthy growth and abundant blooms.
Additional Care Tips
  • Mulching: Apply a 2-3 inch layer of mulch around the base to retain moisture, suppress weeds, and regulate soil temperature. Keep mulch away from the crown to prevent rot.
  • Drought Tolerance: Once established, 'Sarah Sands' is moderately drought-tolerant but benefits from regular watering during extended dry periods to maintain strong flowering.
  • Pests and Diseases: Lilacs can sometimes be affected by powdery mildew. Ensure good air circulation and avoid overhead watering to prevent fungal issues.
Pollination

  • Pollinated by bees, butterflies, and other insects. The flowers are self-pollinating, but more flowers will increase seed production if left unpruned.
Companion Plants
  • Peonies
  • Lavandula (Lavender)
  • Viburnum
  • Echinacea (Coneflower)
Flowering and Seasonality
  • Foliage Season: Spring to fall (deciduous).
  • Flowering Season: Late spring (May).
  • Hardiness Zones: USDA Zones 3-7
  • Color: Deep purple to violet clusters.
  • Form: Large, conical panicles of small, tubular flowers.
  • Bloom Time: Late spring, lasting several weeks.
  • Fragrance: Richly fragrant, classic lilac scent.
Pet Friendly

Yes

Growing Zone
  • Zone 3
  • Zone 4
  • Zone 5
  • Zone 6
  • Zone 7

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