Garden Scheme

Plant library  ·  Herbs

French Lavender

Lavandula dentata

French lavender is a 3-foot perennial herb that holds a substantial place in a sunny planting rather than reading as a small edging plant. Its toothed foliage and long flowering season make it useful where a lasting, low-water presence is wanted from late spring into fall. Place it where its rounded form can remain visible and reachable, without crowding the front edge of a path or bed.

  • Pollinator friendly
  • Deer resistant
Sunlight Full Sun
Water Low
USDA zones 8–11
Spacing 3 ft
Mature size 3 ft tall, 3 ft wide
Bloom Late spring - fall

Placement and use

Use French lavender as a single anchor in a gravelly herb bed, along the sunny side of a patio, or in a container that can be positioned beside a warm wall or open seating area. Set it behind lower plants or at the outer edge of a bed where a 3-foot-tall plant will not block circulation or conceal smaller crops. Cabbage, carrots, tomatoes, strawberries, and apples can share the broader plan when each has its own light, root, and access requirements.

Spacing and mature footprint

Space plants 3 feet apart, center to center, and reserve roughly the same 3-foot width for each mature plant. This creates a continuous rhythm in a repeated planting while leaving room to inspect foliage, cut blooms, and keep neighboring plants from pressing into the lavender’s crown. Along a path, pull the planting line back far enough that the mature canopy does not narrow the walking route.

Three plants set 3 ft apart, center to center; shaded circles show the 3 ft mature spread.

Sun, water, and soil

Give it full sun and excellent drainage. A dry, open part of the plan is more suitable than an irrigated vegetable row or a low spot that stays wet after rain. In containers, use a free-draining mix and keep the pot clear of places where runoff collects; the container also lets the plant occupy a sunny paved area without competing for bed space.

Seasonal notes

Flowers and harvestable growth extend from late spring through fall, so leave enough room for repeated access through the growing season. Deadheading after flowering and a light late-summer trim can help maintain a neater outline; avoid cutting back into old wood. Keep the plant’s footprint available through the full season instead of filling its perimeter with temporary summer plants.[1]

Planning caveats

French lavender is suited to USDA Zones 8 through 11 and needs a protected strategy where winter freezing is expected. A container makes seasonal relocation practical and limits the commitment of a 3-foot-wide plant in colder gardens. Avoid cold, damp positions and heavy soils, which can make winter survival and root health more difficult.[1][2]

Growing facts

Botanical name
Lavandula dentata
Type
Herb
Category
Herbs
Lifecycle
perennial
USDA hardiness zones
8–11
Sunlight
Full Sun
Water
Low
Plant spacing
3 ft
Mature size
3 ft tall, 3 ft wide
Bloom season
Late spring - fall
Harvest season
Late spring - fall
Pollinator friendly
Yes
Deer resistant
Yes
Native to North America
No

References

  1. Lavandula dentata | French lavender — Royal Horticultural Society
  2. How to grow lavender — Royal Horticultural Society

Editorial content updated 2026-07-20.