Lavender Heals

Southwestern Ontario’s climate supports both English lavender (Lavandula angustifolia) and lavandin hybrids (Lavandula x intermedia). English lavender is hardy up to Zone 5, making it ideal for most areas, while lavandin hybrids are best suited for Zone 6 and may require winter protection in colder spots. When selecting a variety, prioritize those known for their resilience in local conditions.

Recommended Varieties:

• English Lavender (‘Hidcote,’ ‘Munstead,’ ‘SuperBlue’) – Hardy, fragrant, and compact.
• Lavandin Hybrids (‘Grosso,’ ‘Phenomenal’) – Larger plants with a high oil content, better for warmer microclimates.

Lavender thrives in full sun, meaning it should receive direct sunlight from morning until evening. Any shade from buildings or trees may hinder its growth.

Soil Requirements:

• Must be well-draining to prevent root rot.
• Loamy or sandy soil is ideal; heavy clay soil should be amended with sand, gravel, or organic matter to enhance drainage.
• A soil pH between 6.5 and 8 is optimal. Consider testing the soil before planting and adjusting accordingly.

For improved drainage, raised beds or planting on mounds is recommended, particularly in areas with compacted or moisture-retaining soil.

To ensure good air circulation and prevent fungal issues, lavender should be spaced 30-60 cm (12-24 inches) apart, depending on the variety. This helps reduce moisture buildup around the plants, minimizing disease risk.

When first planted, young lavender requires regular watering until its root system establishes. After that, it becomes drought-tolerant and should only be watered sparingly, allowing the soil to dry out between waterings.

Pruning is essential to maintain lavender’s shape and encourage new growth. In southwestern Ontario, it’s best to trim plants in early August, right after flowering. Remove spent flower stalks and cut back about one-third of the green growth, taking care not to cut into woody stems, as they may not regenerate.