Can You Grow Asparagus In Minnesota

Yes, you can grow asparagus in Minnesota, and it actually thrives here once you understand a few key things about our climate.
 
Asparagus is a hardy perennial vegetable that loves cold winters, which makes Minnesota a surprisingly great place to grow it.
 
The trick is getting the timing right, choosing the right variety, and being patient for the first couple of years.
 
In this post, we’ll walk through how to grow asparagus in Minnesota, from planting to harvest, so you can enjoy fresh spears for decades.
 
Let’s dig in.
 

Why You Can Grow Asparagus in Minnesota

You can grow asparagus in Minnesota because this state’s cold climate is actually perfect for it.
 
Asparagus is a perennial that needs a dormant period with freezing temperatures to produce well.
 
Minnesota’s harsh winters give asparagus the chill hours it needs to rest and come back strong in spring.
 
Plus, our long summer days provide plenty of sunlight for the ferny foliage to photosynthesize and store energy.
 
The key is well-drained soil, because asparagus roots rot in soggy, wet ground.
 
If you have heavy clay soil like many parts of Minnesota, amend it with compost or plant in raised beds.
 
Once established, an asparagus bed can produce for 15 to 20 years or more, making it a worthwhile investment.
 

1. Choose the Right Variety for Minnesota

The best asparagus varieties for Minnesota are those bred for cold hardiness.
 
‘Mary Washington’ is an old standby that performs well in northern climates.
 
‘Jersey Knight’ and ‘Jersey Supreme’ are all-male hybrids that produce higher yields and resist disease.
 
All-male varieties are ideal because they don’t waste energy producing seeds, so they give you more spears.
 
Avoid any variety labeled for warm climates, as those won’t survive our winters reliably.
 

2. Plant at the Right Time

The best time to plant asparagus in Minnesota is early spring, as soon as the soil can be worked.
 
That usually means late April to mid-May, depending on your location in the state.
 
You can plant crowns (one-year-old roots) or seeds, but crowns are much faster to establish.
 
If you start from seed, you’ll add an extra year to the waiting period before harvest.
 
Plant crowns in trenches about 6 to 8 inches deep, spacing them 12 to 18 inches apart.
 
Cover them with just a couple inches of soil at first, then fill in the trench as shoots grow.
 

3. Site Selection and Soil Prep

Asparagus needs full sun, so pick a spot that gets at least 6 to 8 hours of direct light daily.
 
Good drainage is critical, so avoid low spots where water pools after rain or snowmelt.
 
Work in plenty of organic matter like compost or aged manure before planting.
 
The ideal soil pH for asparagus is between 6.5 and 7.5, so test your soil and adjust if needed.
 
Raised beds are an excellent option in Minnesota if your native soil is heavy clay or poorly drained.
 

How to Care for Asparagus in Minnesota

Once planted, asparagus in Minnesota needs consistent care to establish well.
 
Keep the bed watered during dry spells, especially in the first two years.
 
Weed carefully, because asparagus doesn’t compete well with weeds when young.
 
Apply a layer of mulch to conserve moisture and suppress weeds.
 
In late fall, after the foliage turns brown, cut it down to about 2 inches above the ground.
 
This helps prevent disease and prepares the plants for winter dormancy.
 

1. Fertilizing Asparagus

Asparagus is a heavy feeder, so fertilize in early spring before spears emerge.
 
Use a balanced fertilizer or compost, and avoid over-fertilizing with nitrogen.
 
Too much nitrogen encourages fern growth at the expense of spear production.
 
A soil test every few years will tell you exactly what your asparagus bed needs.
 

2. Managing Pests and Diseases

The main pest of asparagus in Minnesota is the asparagus beetle.
 
These beetles chew on spears and ferns, weakening the plants over time.
 
Handpick them or use row covers early in the season to protect your crop.
 
Fusarium wilt and crown rot are the biggest disease threats, especially in poorly drained soil.
 
That’s why planting in well-drained soil and avoiding overwatering is so important.
 

3. Winter Protection

Asparagus is winter-hardy in Minnesota, but a little protection helps in harsh years.
 
After cutting back the ferns, apply a layer of mulch or straw over the bed.
 
This insulates the crowns and prevents freeze-thaw cycles from heaving them out of the ground.
 
Remove the mulch in early spring so the soil warms up and spears can emerge.
 

When to Harvest Asparagus in Minnesota

You can grow asparagus in Minnesota, but you must wait before harvesting.
 
Don’t harvest any spears the first year after planting.
 
In the second year, you can take a very light harvest for about two weeks.
 
By the third year, you can harvest normally for 6 to 8 weeks.
 
Harvest spears when they’re 6 to 8 inches tall and the tips are still tight.
 
Snap or cut them at ground level, and stop harvesting when spears get thin and spindly.
 
Let the remaining spears grow into ferns to feed the crowns for next year.
 

So, Can You Grow Asparagus in Minnesota?

Yes, you can grow asparagus in Minnesota, and our cold winters are actually an advantage.
 
With the right variety, well-drained soil, and patience during the first two years, you’ll be rewarded with decades of harvests.
 
Plant in early spring, care for the bed consistently, and harvest lightly at first.
 
Once established, asparagus in Minnesota will keep coming back year after year with minimal fuss.
 
So go ahead and plant that bed this spring, and enjoy fresh, homegrown asparagus for many seasons to come.