When To Plant Asparagus In Colorado

The best time to plant asparagus in Colorado is in early spring, typically from late March through April, once the soil has thawed and can be worked.
 
If you’ve been wondering when to plant asparagus in Colorado, the short answer is: as soon as your garden soil is workable in spring, but not so early that it’s still frozen solid.
 
Asparagus is a perennial vegetable that can produce for 15 to 20 years, so getting the planting time right in Colorado’s unique climate is worth the effort.
 
In this post, we’ll cover when to plant asparagus in Colorado, why spring is the ideal window, how elevation affects your planting date, and tips for getting those crowns established successfully.
 
Let’s dig in.
 

When to Plant Asparagus in Colorado

Knowing when to plant asparagus in Colorado comes down to understanding your local climate and soil conditions.
 
Here’s why spring is the answer and how to time it just right.
 

1. Early Spring Is the Sweet Spot

Planting asparagus in Colorado works best in early spring because the crowns need cool, moist soil to establish before the heat of summer arrives.
 
In most parts of Colorado, that means late March through April.
 
If you plant too late, the crowns struggle to root before temperatures soar.
 
If you plant too early, frozen ground makes it impossible to dig properly.
 

2. Soil Temperature Matters More Than the Calendar

Rather than circling a date on your calendar, pay attention to your soil temperature when planting asparagus in Colorado.
 
Asparagus crowns start growing when soil reaches about 50°F.
 
You can plant once your soil is consistently above 45°F and no longer frozen.
 
A simple soil thermometer takes the guesswork out of when to plant asparagus in Colorado.
 

3. Elevation Changes Everything

Colorado’s varied elevations mean planting asparagus in Colorado looks different depending on where you live.
 
Along the Front Range and lower valleys, you can usually plant asparagus in late March or early April.
 
In higher mountain communities, you might need to wait until May or even early June.
 
So when someone asks when to plant asparagus in Colorado, the honest answer depends on your specific spot.
 

How to Plant Asparagus in Colorado

Once you’ve nailed down when to plant asparagus in Colorado, the next step is doing it right.
 
Here’s how to give your crowns the best start.
 

1. Choose the Right Spot

Asparagus needs full sun and well-draining soil.
 
Pick a spot that won’t get waterlogged, since soggy roots rot quickly.
 
In Colorado’s dry climate, a location with good irrigation access is also smart.
 

2. Prepare the Bed Deeply

Dig a trench about 12 inches deep and work in plenty of compost.
 
Asparagus roots grow deep, so loose, rich soil pays off for decades.
 
This prep work is especially important in Colorado’s often clay-heavy or sandy soils.
 

3. Plant Crowns Correctly

Set crowns about 6 to 8 inches deep and space them 12 to 18 inches apart.
 
Cover with just a couple inches of soil at first, then fill the trench gradually as shoots emerge.
 
This gradual method keeps crowns from drying out in Colorado’s intense spring sun.
 

Common Mistakes When Planting Asparagus in Colorado

Even when you know when to plant asparagus in Colorado, a few missteps can set you back.
 
Here’s what to avoid.
 

1. Planting Too Deep or Too Shallow

Crowns planted too deep struggle to push up shoots, while shallow planting dries them out.
 
Stick to the 6-to-8-inch range for the best results when planting asparagus in Colorado.
 

2. Skipping the Waiting Period

Don’t harvest anything the first year, and only lightly the second.
 
Asparagus needs time to build strong roots before you start cutting spears.
 
Patience now means a productive bed for years to come.
 

3. Ignoring Colorado’s Dry Winds

Colorado’s spring winds can dry out young crowns fast.
 
Water consistently and consider a light mulch to retain moisture.
 
This small step makes a big difference when you plant asparagus in Colorado.
 

So, When to Plant Asparagus in Colorado?

The best time to plant asparagus in Colorado is in early spring, once the soil has thawed and warmed to around 50°F.
 
For most of the state, that means late March through April, though higher elevations may push into May.
 
Planting asparagus in Colorado at the right time, paired with deep soil prep and a little patience, sets you up for decades of fresh spears.
 
Now you know exactly when to plant asparagus in Colorado, so grab those crowns and get growing.