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English lavender grows relatively quickly compared to many other perennial plants.
In fact, how quickly English lavender grows depends on several factors like sunlight, soil, watering habits, and the variety you choose.
Generally, you can expect your English lavender to put on about 6 to 12 inches of new growth in a single growing season.
But if you start from seed, the journey is slower than if you begin with established plants or cuttings.
So how quickly does English lavender grow from seed?
From seed, English lavender can take anywhere from 14 to 28 days just to germinate.
After that, the seedlings grow slowly at first, and you might wait 2 to 3 months before they are large enough to transplant outdoors.
If you plant English lavender from cuttings or small nursery starts, though, the growth rate speeds up significantly.
Those plants can establish themselves in just a few weeks and begin flowering in their first or second season.
Let’s explore exactly how quickly English lavender grows and what you can do to help it along.
How Quickly Does English Lavender Grow?
English lavender grows quickly when it has the right conditions, but “quickly” is relative.
During the active growing season, which runs from spring through early summer, English lavender can grow several inches per month.
A healthy plant in full sun and well-draining soil may reach its full mature size in just two to three years.
That means if you start with a small 4-inch pot, you could have a bushy, flowering shrub within a couple of seasons.
But how quickly English lavender grows also depends on whether you are growing it indoors or outdoors.
Indoor lavender often grows slower because it rarely gets the intense sunlight it craves.
1. Growth Rate From Seed vs. Cuttings
Starting English lavender from seed is the slowest route.
You’ll wait nearly a month for germination, and the seedlings themselves grow at a snail’s pace for the first few months.
Cuttings, on the other hand, root in about 2 to 4 weeks and then grow much faster.
If you want to know how quickly English lavender grows, using cuttings or nursery transplants is the fastest way to get a full plant.
2. First-Year Growth Expectations
In the first year, English lavender focuses most of its energy on building roots.
You might see only a few inches of top growth, and that’s completely normal.
Don’t panic if your plant looks small after the first season.
By year two, the growth rate accelerates, and you’ll notice the plant filling out and producing more stems.
So when someone asks how quickly English lavender grows, remind them that the first year is about patience, not speed.
3. Mature Growth Rate Per Season
Once established, English lavender grows about 6 to 12 inches per year.
It will also spread outward, forming a rounded mound that can reach 1 to 2 feet wide.
Regular pruning after flowering keeps the plant compact and encourages fresh growth.
Without pruning, English lavender grows leggy and woody over time, which slows future growth.
Factors That Affect How Quickly English Lavender Grows
Several key factors determine how quickly English lavender grows in your garden.
Get these right, and your lavender will reward you with fast, healthy growth.
1. Sunlight
English lavender needs at least 6 to 8 hours of direct sunlight every day.
The more sun it gets, the faster it grows and the more flowers it produces.
Shade slows growth dramatically and can make the plant weak and spindly.
2. Soil Drainage
Lavender hates wet feet.
If the soil stays soggy, root rot sets in and growth stops completely.
Sandy or gravelly soil that drains quickly is ideal for fast growth.
3. Watering Habits
Once established, English lavender is drought-tolerant and grows best with infrequent deep watering.
Overwatering is the number one killer of lavender and will stunt its growth.
4. Temperature and Climate
English lavender thrives in warm, dry summers and cool winters.
In hot, humid climates, growth slows and fungal issues increase.
In its ideal Mediterranean-like climate, English lavender grows faster than almost anywhere else.
5. Pruning and Care
Regular pruning keeps English lavender growing vigorously.
Cut back about one-third of the plant after flowering to stimulate new growth.
Fertilize sparingly, as too much nitrogen makes lavender grow soft and floppy instead of sturdy and fast.
How to Make English Lavender Grow Faster
If you want to speed things up, here are a few practical tips.
Start with healthy nursery plants instead of seeds.
Plant in full sun with gritty, well-draining soil.
Avoid mulching heavily around the base, as that traps moisture.
Water deeply but infrequently, and let the soil dry out between waterings.
Prune lightly in early spring to encourage fresh growth.
With these steps, you’ll notice just how quickly English lavender grows when it’s happy.
So, How Quickly Does English Lavender Grow?
English lavender grows relatively quickly once established, adding 6 to 12 inches per season and reaching full size in two to three years.
From seed, it’s a slow start, but from cuttings or nursery plants, growth is much faster.
Give it plenty of sun, sharp drainage, and careful pruning, and you’ll be amazed at how quickly English lavender grows in your garden.
So whether you’re planting a border or a fragrant hedge, English lavender grows fast enough to reward you within a season or two.