How Long Does It Take To Grow Basil

It takes about 21 to 28 days for basil seeds to grow into a plant you can start harvesting, but the full timeline from seed to a mature, bushy basil plant takes anywhere from 60 to 75 days.
 
When you’re wondering how long does it take to grow basil, the answer really depends on whether you’re starting from seeds, using transplants, or growing indoors versus outdoors.
 
Basil is one of the fastest and most rewarding herbs to grow, and with the right conditions, you’ll see tiny sprouts within just a week.
 
In this post, we’ll break down how long does it take to grow basil at every stage, from seeding to your first pesto-worthy harvest.
 
We’ll also share tips to speed up the process so you can figure out exactly how long does it take to grow basil in your own garden.
 
Let’s dig into the timeline and get you on the fast track to fresh basil.
 

How Long Does It Take To Grow Basil From Seed?

When you plant basil seeds directly in soil, the total time to grow basil from seed to a harvestable plant is about 60 to 75 days.
 
But you don’t have to wait that long to start enjoying fresh leaves, because you can begin picking a few leaves as soon as the plant reaches about 6 inches tall.
 
That first harvest can come as early as 3 to 4 weeks after planting if conditions are warm and sunny.
 
So if someone asks you how long does it take to grow basil, you can honestly say you’ll see sprouts in 5 to 10 days, young leaves in 3 weeks, and a full plant in about 2 months.
 
The real secret is that basil grows quickly, but it needs consistent warmth to stay on that speedy track.
 
Let’s look at the stages so you know what to expect week by week.
 

Days 1 to 10: Germination and Seedling Emergence

Basil seeds are incredibly eager to sprout, and they typically germinate in 5 to 10 days when soil temperatures sit between 70°F and 85°F.
 
If the soil is cooler than 65°F, germination slows down dramatically, which is why so many gardeners ask how long does it take to grow basil indoors where you can control the heat.
 
You’ll know germination worked when you see two small, rounded cotyledon leaves pushing through the soil.
 
Keep the soil moist but not soggy during this stage, and give your seedlings plenty of light to prevent them from getting leggy.
 
Once those first true leaves appear, your basil is officially on its way.
 

Weeks 2 to 4: Young Plant Growth

By the second week, your basil seedlings will start producing their distinct, fragrant true leaves.
 
This is when you’ll really notice how fast basil can grow, because the plant might double in size every week under good conditions.
 
At this point, you can also answer the question of how long does it take to grow basil to a transplantable size, which is usually about 3 to 4 weeks.
 
Once the seedlings have two sets of true leaves, they’re ready to be thinned out or transplanted into bigger pots or your garden bed.
 
Keep pinching off any flower buds you see, because flowering will slow down leaf production and change the flavor.
 

Weeks 5 to 8: Bushy Growth and First Harvest

Between weeks five and eight, your basil plant will become lush, bushy, and highly productive.
 
This is the stage where you can confidently start harvesting, and the more you pinch, the more the plant branches out.
 
If you’re still wondering how long does it take to grow basil to full maturity, this is it, because most standard basil varieties reach their peak leaf production around day 60 to 75.
 
You’ll know your plant is mature when it has multiple stems, plenty of large leaves, and a strong aromatic smell.
 
Harvesting regularly during this window keeps your basil growing and prevents it from turning woody.
 

How Long Does It Take To Grow Basil Indoors Versus Outdoors?

The answer to how long does it take to grow basil changes depending on where you place your plants, and the biggest factor is temperature and light.
 
Indoors, you can grow basil year-round, and it usually takes about the same 60 to 75 days to reach full size if you provide grow lights.
 
Outdoors, basil grows fastest in the heat of summer, and it can mature in as little as 50 to 60 days during a warm streak.
 
But outdoors in cooler spring temperatures, you might need to add a couple of weeks to the timeline.
 
Here’s a closer look at how each environment affects your basil-growing speed.
 

Indoor Basil Growing Time

When growing basil indoors on a sunny windowsill, expect the total time to grow basil to full size to be around 8 to 10 weeks.
 
The key is providing at least 6 to 8 hours of bright, direct sunlight each day.
 
Without enough light, basil grows slowly and becomes pale and leggy, so you might need to add a grow light during shorter winter days.
 
Indoor basil also tends to grow a bit slower than outdoor basil because temperatures inside are often more moderate.
 
Still, you can start harvesting small amounts of indoor basil about 3 to 4 weeks after sprouting.
 

Outdoor Basil Growing Time

Outdoor basil loves full sun and warm soil, and this is where it will grow the fastest.
 
If you plant basil seedlings outdoors after the last frost date, you can typically harvest your first big batch of leaves in about 4 to 6 weeks.
 
And the total time to grow basil from seed outdoors is usually 60 to 75 days, depending on your climate.
 
In extra-hot regions, basil can even mature a bit faster, sometimes in just 50 to 55 days.
 
Just remember that basil is extremely frost-sensitive, so don’t rush it outside until nights stay reliably above 50°F.
 

How Long Does It Take To Grow Basil From a Cutting?

If you’re impatient, you can skip the seed stage entirely and grow basil from a cutting, and this drastically shortens how long does it take to grow basil.
 
A stem cutting placed in water will develop roots in 1 to 2 weeks, and you can transplant it into soil once the roots are about an inch long.
 
From that point, you can start harvesting new leaves in just 2 to 3 weeks.
 
So the total time to grow basil from a cutting to a harvestable plant is roughly 3 to 4 weeks, which is half the time of growing from seed.
 
The easiest way is to take a 4-inch cutting from a healthy basil plant, strip off the lower leaves, and place it in a glass of water.
 
Change the water every couple of days, and you’ll be surprised how quickly those roots appear.
 

Tips to Speed Up Basil Growth

If you’re wondering how to reduce the time it takes to grow basil, there are a few simple tricks you can use.
 
First, always plant basil in rich, well-draining soil that’s been amended with compost, because hungry basil grows faster.
 
Second, water consistently so the soil stays evenly moist, but never waterlogged, since dry spells slow growth.
 
Third, feed your basil with a balanced liquid fertilizer every two to three weeks to encourage rapid leaf production.
 
And fourth, pinch off flower buds as soon as they appear, because flowering signals the plant to stop putting energy into leaves.
 
Following these tips can easily shave 1 to 2 weeks off your total time to grow basil.
 

So, How Long Does It Take To Grow Basil?

Basil takes about 60 to 75 days to grow from seed to full maturity, but you can start harvesting leaves as early as 3 to 4 weeks after planting.
 
The exact time to grow basil depends on whether you start from seed, transplant, or cutting, and whether your plants get enough heat and light.
 
If you’re growing indoors, expect a slightly longer timeline, while summer outdoor basil grows the fastest.
 
And by growing basil from cuttings, you can cut the wait time in half, enjoying fresh leaves in under a month.
 
So if you’ve been asking yourself how long does it take to grow basil, now you know it’s a quick and exciting process that rewards you within weeks.
 
Get your soil warm, your seeds planted, and your sunny spot ready, because fresh basil is closer than you think.