How To Plant Celery From Seeds

To plant celery from seeds, you need to start them indoors about 10 to 12 weeks before your last expected frost date.
 
Celery seeds are tiny and slow to germinate but with a little patience they will sprout.
 
If you’ve been wondering how to plant celery from seeds successfully, the key is to mimic the cool, moist conditions celery loves.
 
In this post, we’ll walk through how to plant celery from seeds step by step so you can grow crisp, flavorful stalks at home.
 
Let’s get started.
 

How to Plant Celery from Seeds Indoors

Learning how to plant celery from seeds begins indoors because celery needs a long growing season.
 
Here’s how to do it right.
 

1. Start at the Right Time

You should plant celery seeds indoors 10 to 12 weeks before your last frost.
 
This gives the seedlings enough time to grow strong before you move them outside.
 
If you plant celery from seeds too late, the stalks won’t have time to mature before cold weather arrives.
 

2. Use the Right Seed-Starting Mix

Celery seeds need a fine, moisture-retentive seed-starting mix.
 
Fill your trays or small pots with this mix and moisten it before sowing.
 
A light, airy medium helps those tiny seeds settle in without drying out.
 

3. Sow the Seeds on the Surface

When you plant celery from seeds, don’t bury them deeply.
 
Celery seeds need light to germinate, so simply press them gently into the surface of the soil.
 
You can sprinkle a very thin layer of vermiculite on top but keep it light.
 

4. Keep the Soil Consistently Moist

Moisture is critical when you plant celery from seeds.
 
Use a spray bottle to mist the soil so you don’t disturb the seeds.
 
You can also cover the trays with a humidity dome or plastic wrap to lock in moisture until germination.
 

5. Provide the Right Temperature and Light

Celery seeds germinate best at temperatures between 70°F and 75°F.
 
Once seedlings emerge, place them under grow lights or in a sunny window.
 
Celery seedlings need at least 12 to 16 hours of light daily to grow sturdy and strong.
 

Caring for Celery Seedlings After Planting Celery from Seeds

Once you’ve planted celery from seeds, the real work begins.
 
Celery seedlings are delicate and need consistent care.
 
Here’s what to focus on.
 

1. Water Gently but Regularly

Celery seedlings should never dry out completely.
 
Water them from the bottom if possible to encourage deep roots.
 
If you water from the top, do it gently so you don’t knock over the tiny stems.
 

2. Thin the Seedlings

When your celery seedlings are about an inch tall, thin them so they’re 2 to 3 inches apart.
 
This gives each plant enough room to grow without competing for nutrients.
 
If you started seeds in individual cells, you may not need to thin as much.
 

3. Fertilize Lightly

After seedlings develop their first true leaves, feed them with a diluted liquid fertilizer.
 
Celery is a heavy feeder, so a little boost every two weeks helps.
 
Just don’t overdo it because young plants can burn easily.
 

4. Harden Off Before Transplanting

About a week before transplanting, start hardening off your celery seedlings.
 
Set them outside for a few hours each day, gradually increasing their time outdoors.
 
This helps them adjust to wind, sun, and temperature changes.
 

Transplanting Celery You Planted from Seeds

When your celery seedlings are 6 to 8 inches tall and have several stems, they’re ready to go outside.
 
Choose a spot with full sun to partial shade and rich, well-draining soil.
 
Space plants 8 to 10 inches apart in rows that are 18 to 24 inches apart.
 
Water them well after transplanting and keep the soil consistently moist.
 
Mulch around the plants to retain moisture and suppress weeds.
 
Celery planted from seeds this way will reward you with crisp, flavorful stalks in about 16 to 18 weeks.
 

So, How to Plant Celery from Seeds?

To plant celery from seeds, start indoors 10 to 12 weeks before your last frost, sow on the surface, and keep the soil moist.
 
Celery seeds are tiny and slow to germinate but with patience and consistent care they will sprout.
 
If you’ve been wondering how to plant celery from seeds successfully, the key is to mimic the cool, moist conditions celery loves.
 
Hope this post has helped you with exploring how to plant celery from seeds and the best ways to get it done.