How And When To Plant Asparagus Crowns

You can plant asparagus crowns in early spring as soon as the soil is workable, or in late fall after the plants go dormant.
 
Asparagus crowns are the dormant roots of one-year-old asparagus plants, and they’re the easiest and most reliable way to start a new asparagus bed.
 
If you’ve been wondering how and when to plant asparagus crowns, the answer is simpler than you might think.
 
You just need the right timing, good soil prep, and a little patience.
 
In this post, we’ll cover exactly when to plant asparagus crowns, how to plant them step by step, and what to do after planting so your crowns thrive for decades.
 
Let’s dig in.

When to Plant Asparagus Crowns

Knowing when to plant asparagus crowns makes all the difference between a thriving bed and a disappointing one.
 

1. Early Spring Is the Ideal Window

The best time to plant asparagus crowns is in early spring, once the soil has thawed and can be worked.
 
You want the soil temperature to be around 50°F (10°C), which usually happens a few weeks before your last frost date.
 
Planting asparagus crowns in spring gives them a full growing season to establish roots before winter arrives.
 

2. Late Fall Works Too in Mild Climates

If you live in a milder climate, you can also plant asparagus crowns in late fall after the plants have gone dormant.
 
This gives the crowns a head start, as they’ll wake up and grow as soon as spring warmth arrives.
 
Just make sure the ground isn’t frozen and won’t freeze hard right after planting.
 

3. Avoid Planting in Summer Heat

Planting asparagus crowns in the heat of summer is a bad idea.
 
The crowns will struggle to establish roots when temperatures are high, and the stress can stunt their growth permanently.
 
Stick to spring or fall and your asparagus crowns will thank you.

How to Plant Asparagus Crowns Step by Step

Learning how to plant asparagus crowns correctly is key because these plants can produce for 20 years or more.
 

1. Choose the Right Spot and Prep the Soil

Asparagus crowns need full sun and well-drained soil.
 
Pick a spot where the plants won’t be disturbed, since asparagus beds are permanent.
 
Loosen the soil to about 12 inches deep and mix in plenty of compost or aged manure.
 
Asparagus crowns love rich, fertile soil with a pH between 6.5 and 7.0.
 

2. Dig Trenches for Your Crowns

Dig trenches about 6 to 8 inches deep and 12 inches wide.
 
Space the trenches 3 to 4 feet apart so the ferns have room to spread.
 
If you’re planting more than one row, keep this spacing consistent.
 

3. Set the Asparagus Crowns in Place

Soak your asparagus crowns in water for about an hour before planting.
 
Then, form a small mound of soil in the bottom of each trench.
 
Set each crown on top of the mound and spread the roots out evenly, like a spider’s legs.
 
Space the crowns 12 to 18 inches apart within the row.
 

4. Cover and Water Gently

Cover the crowns with 2 inches of soil and water them in well.
 
As the shoots grow through the season, keep adding soil until the trench is filled.
 
This gradual covering is how to plant asparagus crowns so they develop strong, deep root systems.
 

5. Mulch After Planting

Once the trenches are filled, add a layer of mulch to retain moisture and suppress weeds.
 
Mulching also helps keep the soil temperature steady, which is great news for young asparagus crowns.

Caring for Asparagus Crowns After Planting

Planting asparagus crowns is only the beginning, and a little care goes a long way.
 

1. Water Regularly but Don’t Overdo It

Asparagus crowns need about 1 inch of water per week.
 
Deep, infrequent watering encourages roots to grow downward, which makes the plants stronger.
 

2. Keep the Bed Weed-Free

Weeds compete with young asparagus crowns for nutrients and water.
 
Pull weeds by hand, and be careful not to disturb the crowns’ shallow roots.
 

3. Resist Harvesting Too Soon

Don’t harvest any spears the first year after planting asparagus crowns.
 
Let the ferns grow and feed the roots instead.
 
You can take a light harvest in year two and a full harvest from year three onward.
 
Trust me, waiting pays off big time.

So, How and When to Plant Asparagus Crowns?

You plant asparagus crowns in early spring or late fall, setting them in trenches with their roots spread over a mound of soil.
 
Timing matters, but so does soil preparation, proper spacing, and patience.
 
Get those right, and your asparagus crowns will reward you with fresh spears for decades to come.
 
Now you know exactly how and when to plant asparagus crowns, so grab your shovel and get growing.