How Long Does It Take To Grow Arborvitae From Seed

It can take anywhere from one to three years to grow arborvitae from seed before you have a transplant-ready sapling.
 
Growing arborvitae from seed is a slow but rewarding process if you have patience.
 
Many gardeners ask how long it takes to grow arborvitae from seed because they want to plan their landscape timeline.
 
The full journey from seed to a mature privacy hedge can span ten to fifteen years.
 
In this post, we’ll break down exactly how long it takes to grow arborvitae from seed at each stage.
 
Let’s dig in.
 

How Long Does It Take to Grow Arborvitae From Seed

The total time to grow arborvitae from seed depends on several stages.
 

1. Germination Phase Takes Several Weeks to Months

Arborvitae seeds need a cold, moist period called stratification to wake up.
 
Without stratification, it can take even longer to grow arborvitae from seed or germination may fail entirely.
 
Once stratified, seeds typically germinate within two to four weeks if conditions are warm.
 
But some seeds may take up to three months to sprout, so patience is key when growing arborvitae from seed.
 

2. Seedling Stage Lasts One Full Growing Season

After sprouting, the seedling spends its first year building roots and a tiny stem.
 
During this time, growing arborvitae from seed means protecting the fragile plant from harsh sun and wind.
 
By the end of year one, seedlings are often only two to four inches tall.
 
That’s normal, slow growth is part of how long it takes to grow arborvitae from seed.
 

3. Transplant-Size Sapling Takes Two to Three Years

Most gardeners want a plant big enough to set in the ground permanently.
 
To reach six to twelve inches tall, you usually need to grow arborvitae from seed for two to three years.
 
At that size, the root system is strong enough to survive transplanting.
 
So if you’re wondering how long it takes to grow arborvitae from seed to a usable plant, plan on two to three years.
 

4. Full Maturity for Privacy Hedges Takes a Decade or More

Arborvitae can eventually reach ten to fifteen feet tall depending on the variety.
 
But growing arborvitae from seed to that height takes ten to fifteen years.
 
That’s much slower than buying nursery-grown specimens, but it’s also much cheaper.
 
Knowing how long it takes to grow arborvitae from seed helps you decide if this route fits your timeline.
 

Factors That Affect How Long It Takes to Grow Arborvitae From Seed

Not all arborvitae seeds grow at the same speed.
 

1. Seed Stratification Is Essential

Arborvitae seeds require sixty to ninety days of cold, damp storage to break dormancy.
 
If you skip stratification when growing arborvitae from seed, germination may take twice as long or fail.
 
Proper stratification accelerates the whole timeline.
 

2. Soil Temperature and Moisture

Seeds germinate fastest in soil around 65–70°F.
 
Cold soil can delay sprouting by weeks when you grow arborvitae from seed.
 
Keep the growing medium consistently moist but not waterlogged for best results.
 

3. Light Availability

Arborvitae seedlings need bright, indirect light to grow strong.
 
Insufficient light leads to leggy, weak plants that take longer to reach transplant size.
 
Providing adequate light shortens how long it takes to grow arborvitae from seed.
 

4. Variety of Arborvitae

Different species grow at different rates.
 
For example, American arborvitae (Thuja occidentalis) is slower than Giant arborvitae (Thuja plicata).
 
Choosing a faster-growing variety reduces the total time to grow arborvitae from seed.
 

Tips to Speed Up Growing Arborvitae From Seed

You can’t rush nature completely, but these tricks help.
 

1. Scarify the Seed Coat

Lightly sand or nick the hard seed coat before stratification.
 
This lets water in faster when you start growing arborvitae from seed.
 
It can shave weeks off the germination phase.
 

2. Use a Heat Mat

Place seed trays on a propagation heat mat set to 70°F.
 
Consistent bottom heat speeds germination by keeping the root zone warm.
 
That matters when you’re trying to grow arborvitae from seed efficiently.
 

3. Start Indoors Under Grow Lights

Indoor controlled conditions give your seedlings a head start before outdoor planting.
 
You can gain an entire growing season by starting earlier.
 
This is one of the best ways to reduce how long it takes to grow arborvitae from seed.
 

4. Harden Off Gradually

Slowly acclimate seedlings to outdoor conditions over one to two weeks.
 
Sudden shock can set back growth by months when you grow arborvitae from seed.
 
Gentle transition keeps the plant moving forward steadily.
 

So, How Long Does It Take to Grow Arborvitae From Seed?

It can take anywhere from one to three years to grow arborvitae from seed before you have a transplant-ready sapling.
 
Growing arborvitae from seed is a slow but rewarding process if you have patience.
 
The full journey from seed to a mature privacy hedge can span ten to fifteen years.
 
Many gardeners ask how long it takes to grow arborvitae from seed because they want to plan their landscape timeline.
 
Hope this post has helped you understand exactly how long it takes to grow arborvitae from seed at each stage.
 
Happy planting.