How Fast Does Lavender Grow
English lavender grows 6–12 inches per year and reaches full size in 3–4 years. US guide covering growth rates by type, zone, and soil conditions.
Key takeaways
- English lavender grows 6–12 inches per year and reaches its mature size of 2–3 feet in 3–4 years after planting
- The 'sleep, creep, leap' pattern applies: slow first year while roots establish, faster second year, vigorous growth by year three
- Full sun (8+ hours daily) is the single biggest factor — lavender in 4 hours of sun grows at roughly half the rate of lavender in full sun
- Well-drained, slightly alkaline soil accelerates growth; clay soil or overwatering stunts it significantly
- Lavandin (Lavandula × intermedia) grows faster and larger than English lavender, reaching 3–4 feet in 2–3 years
How fast does lavender grow?
English lavender grows 6–12 inches per year and reaches its mature size of 2–3 feet in 3–4 years. Lavandin (Lavandula × intermedia) grows faster — 12–18 inches per year — and can reach 3–4 feet within 2–3 years of planting.
Growth rate varies significantly by variety, sun exposure, soil type, and USDA hardiness zone. A lavender plant in full sun on well-drained soil in Zone 6 grows nearly twice as fast as the same variety in partial shade on clay soil.
Lavender growth rates by variety
The type of lavender matters more than any other factor when estimating how quickly a plant will mature.
| Variety | Type | Annual growth | Mature size | USDA Zones |
|---|---|---|---|---|
| English lavender (L. angustifolia) | Perennial | 6–12 in/year | 2–3 ft tall, 2–4 ft wide | 5–8 |
| Lavandin (L. × intermedia) | Perennial | 12–18 in/year | 3–4 ft tall, 3–5 ft wide | 5–8 |
| Spanish lavender (L. stoechas) | Perennial | 8–14 in/year | 2–3 ft tall, 2–3 ft wide | 7–9 |
| French lavender (L. dentata) | Tender perennial | 8–12 in/year | 2–3 ft tall, 2–3 ft wide | 8–10 |
| Fernleaf lavender (L. multifida) | Tender perennial | 10–16 in/year | 2–3 ft tall, 2–3 ft wide | 9–11 |
English lavender growth stages
English lavender follows a predictable three-phase growth pattern that gardeners describe as “sleep, creep, leap”:
Year 1 (sleep): Root development dominates over above-ground growth. The plant may add only 3–5 inches of height while pushing extensive root growth. This is normal — do not worry about slow first-year growth.
Year 2 (creep): Root system is established. Growth accelerates to 8–12 inches per year. The shrub begins to take its characteristic mounded form.
Year 3 (leap): Full vigor. Plants in good conditions can add 10–15 inches in a season. Most English lavender varieties reach their mature size by the end of year three or four.
Lavandin grows faster
Lavandin hybrids — crosses between English lavender and spike lavender (L. latifolia) — grow more vigorously than either parent. Popular US varieties include ‘Grosso’, ‘Phenomenal’, ‘Provence’, and ‘Impress Purple’.
Lavandin advantages for fast growth:
- Reaches blooming size 6–12 months ahead of English lavender
- Produces larger plants for hedging or borders
- More tolerant of heat and humidity
- Yields more fragrant flowers per plant at harvest
The trade-off: lavandin is not reliably hardy below Zone 5 (English lavender survives to Zone 5 and some varieties to Zone 4). Lavandin is also not culinary — its camphor content makes it unsuitable for cooking, unlike English lavender.
What affects lavender’s growth rate most
Sunlight
Full sun is the most important growth factor for lavender. Plants receiving 8+ hours of direct sun grow fastest, bloom most heavily, and stay healthiest. Plants in 4–5 hours of sun grow at roughly half the rate.
Lavender evolved on Mediterranean hillsides — hot, dry, and sunny. In the US, this means south or west-facing exposures work best. East-facing locations with morning sun and afternoon shade are acceptable. North-facing or heavily shaded spots result in poor growth and frequent disease problems. See our guide on can lavender grow in shade for more detail.
Soil drainage
Poor drainage stops lavender cold. Clay soil that holds moisture causes root rot — the number one killer of lavender in the US. Plants in clay soil may grow a few inches, then decline and die within two years regardless of sun or fertilizing.
To grow lavender in heavy soil:
- Raise beds 8–12 inches above surrounding grade
- Amend with grit (coarse perlite or sharp sand) at 30–40% by volume — not fine sand
- Add lime to raise pH toward 7.0–7.5 if soil is acidic
- Plant on slopes when possible for natural drainage
Colorado State University Extension recommends adding 25–30% grit by volume to clay soils before planting lavender in Colorado’s heavy soils — the same principle applies across much of the mountain West.
Soil pH
Lavender prefers slightly alkaline soil — pH 6.5–7.5. Most US garden soils in the East are mildly acidic (pH 5.5–6.5). Adding lime at planting raises pH and directly accelerates growth. In naturally alkaline soils of the Southwest, lavender often grows without pH amendment.
Water and fertilizing
Established lavender grows best with minimal water and fertilizer. Overwatering slows growth, promotes disease, and reduces fragrance oil concentration.
- Water young transplants weekly for the first 4–6 weeks, then reduce to every 2 weeks.
- Established plants (year 2+) need watering only during extended dry spells — every 3–4 weeks in most US climates.
- A light application of balanced fertilizer in early spring (before growth resumes) accelerates the season’s growth. Avoid feeding after July.
- High-nitrogen fertilizer pushes leafy growth but reduces fragrance and flower production — use low-nitrogen formulas.
Lavender growth by USDA zone
Zone affects both how fast lavender grows during the growing season and how long the growing season is.
Zones 5–6: English lavender may experience tip dieback in harsh winters. Spring regrowth can be delayed. Growing season is shorter — roughly 150 days. Growth per year is at the lower end of the range.
Zones 6b–7: The sweet spot for English lavender and lavandin in the US. Long growing seasons, cold-enough winters to provide dormancy, and heat without excessive humidity. Maximum annual growth rates are common.
Zone 8: English lavender often does not get enough winter chill for full dormancy. Growth may be irregular. Spanish lavender and French lavender perform better. Summer heat is extreme enough to cause some dieback.
Zones 9–10: English lavender struggles without winter chill. Grow Spanish lavender, French lavender, or fernleaf lavender. Annual growth rates are high in the growing season but plants may not persist as long-lived perennials.
Pruning and how it affects growth
Annual pruning keeps lavender growing vigorously for longer. Unpruned lavender becomes woody at the center and fails to push new growth from old wood after 5–7 years. Regular pruning extends productive life to 15–20 years.
The best time to prune:
- After first bloom flush: Remove spent flowers plus 1/3 of the current-season growth
- Late summer or fall (light): Optional shaping to prevent plants from splaying open in winter
Never cut into old, brown, leafless wood — lavender does not regenerate well from bare wood, unlike forsythia or other shrubs.
Pruned plants push vigorous new growth within 4–6 weeks. This new growth carries next year’s flower buds and contributes to the following year’s measured annual growth.
See our complete lavender plant care guide for full pruning and care details.
Comparing lavender growth to other herbs
How does lavender compare with herbs US gardeners commonly grow?
| Herb | Growth rate | Mature size | Perennial? |
|---|---|---|---|
| English lavender | 6–12 in/year | 2–3 ft | Yes (Zones 5–8) |
| Rosemary | 12–24 in/year | 3–5 ft | Yes (Zones 7–10) |
| Sage | 10–18 in/year | 2–3 ft | Yes (Zones 5–8) |
| Thyme | 4–8 in/year | 6–12 in | Yes (Zones 4–9) |
| Spanish lavender | 8–14 in/year | 2–3 ft | Yes (Zones 7–9) |
Rosemary grows significantly faster than English lavender and reaches its mature size a year or two ahead. Both require well-drained soil and full sun.
When to expect lavender to bloom
Growth rate and first blooming are closely linked. Most lavender plants:
- Year 1: One light bloom flush (if any) — focus on root establishment
- Year 2: First strong bloom in June–July
- Year 3: Full bloom performance; plant at mature size
Lavandin typically blooms in its second year and reaches full performance by year three.
The lavender companion plants guide covers what to plant alongside lavender while it establishes — companions that tolerate the same dry, sunny, well-drained conditions without competing aggressively.
Buying vs. starting from seed
Transplants reach blooming size significantly faster than seed-grown plants. Lavender seed germinates slowly and unevenly — it can take 2–4 weeks for seeds to sprout, and seedlings take 6–8 months to reach transplant size.
From transplant to first bloom: 12–18 months. From seed to first bloom: 2.5–3 years.
If fast establishment is the goal, buy 4-inch or gallon-size transplants from a reputable nursery. Larger starts cost more but blooms appear a full year sooner.
For container growing, the lavender indoors guide covers how to manage growth rate and plant size in pots.
Sarah Mitchell is a Master Gardener and garden writer based in the Pacific Northwest. She has been growing food and flowers for over 15 years across USDA zones 7 and 8.