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To plant an asparagus crown, you simply dig a trench, create a small mound for the roots, and set the crown on top before covering it with soil.
It sounds simple, and it really is, but getting a few key details right at planting time makes all the difference for the next 20 years of harvests.
If you’ve been wondering how to plant asparagus crowns the right way, you’re in the right place.
In this post, we’ll walk through exactly when and how to plant asparagus crowns, how deep they should go, and how to care for them after planting.
Let’s dig in (pun fully intended).
How to Plant Asparagus Crowns the Right Way
Planting asparagus crowns properly comes down to timing, soil prep, and a few simple planting steps.
Here’s what you need to know to plant asparagus crowns successfully.
1. Start With the Right Timing
The best time to plant asparagus crowns is early spring, once the soil has warmed to about 50°F and is workable but still cool.
Planting asparagus crowns in spring gives them a full growing season to establish roots before winter.
In warmer climates, you can also plant asparagus crowns in late fall, but spring remains the classic window.
Get this timing right and your crowns will settle in much faster.
2. Choose a Sunny, Well-Drained Spot
Before you plant asparagus crowns, pick a spot that gets at least six to eight hours of direct sun each day.
Asparagus hates soggy feet, so well-drained soil is non-negotiable when you plant asparagus crowns.
Raised beds work beautifully if your native soil stays wet, and they also make it easier to control the soil mix.
Since asparagus can produce for two decades, choose a permanent spot when you plant asparagus crowns.
3. Prep the Soil Deeply
Asparagus roots grow deep, so loosen the soil at least 12 to 15 inches down before you plant asparagus crowns.
Mix in plenty of compost or aged manure, because these hungry plants feed heavily for years.
A soil pH between 6.5 and 7.5 is ideal for growing asparagus, so test and adjust if needed.
If you do this prep work now, the crowns you plant will reward you for a very long time.
Step-by-Step Guide to Plant Asparagus Crowns
Once your site is ready, here’s the actual process for how to plant asparagus crowns.
Follow these steps and your crowns will get off to a strong start.
1. Dig a Trench
Dig a trench about 12 inches wide and 6 to 8 inches deep to plant asparagus crowns.
If you’re planting several, space trenches about 3 to 4 feet apart so the ferns have room to grow.
Keep the soil you remove nearby, because you’ll use it to backfill as the plants grow.
A level trench bottom matters more than you’d think when you plant asparagus crowns.
2. Build Small Mounds
Inside the trench, shape small mounds of soil about 2 inches high, spaced 12 to 18 inches apart.
These mounds are where you’ll rest each crown so its roots can drape downward naturally.
When you plant asparagus crowns on mounds, you prevent the roots from balling up underneath.
This tiny step is one of the biggest secrets to healthy asparagus.
3. Position Each Crown Correctly
Set each crown on top of its mound and spread the roots out evenly around it, like tentacles.
The bud or “eye” of the crown should face up when you plant asparagus crowns.
Cover each crown with just 2 inches of soil at first, leaving the rest of the trench open.
Burying them too deep right away is the most common mistake people make.
4. Water and Backfill Gradually
Give the trench a gentle, deep watering after you plant asparagus crowns.
As shoots emerge over the coming weeks, gradually fill the trench until it’s level with the surrounding soil.
Never bury the growing tips completely, because the spears need light to develop properly.
This gradual backfill method mimics how asparagus naturally settles into the ground.
5. Mulch and Keep Weeds Down
Add a layer of straw, compost, or grass clippings once your planted crowns push up spears.
Mulch locks in moisture and smothers weeds, which compete fiercely with young asparagus.
Weeds are the number one reason new asparagus beds fail, so stay on top of them.
If you plant asparagus crowns and mulch well, you’ll barely have to weed at all.
Caring for Asparagus Crowns After Planting
Once your crowns are in the ground, a little patience and steady care go a long way.
Here’s how to keep them thriving after you plant asparagus crowns.
Water deeply once a week during dry spells, aiming for about an inch of moisture.
Resist the urge to harvest during the first two years so the crowns can build strong roots.
Let the ferns grow tall and brown in fall, then cut them back after they die naturally.
By year three, the asparagus you planted will finally give you a real harvest.
Feed your bed each spring with compost, and your asparagus crowns will keep producing for decades.
So, How Do You Plant an Asparagus Crown?
You plant an asparagus crown by digging a trench, mounding soil inside it, spreading the roots over that mound, and covering the crown with just a couple inches of soil.
From there, you backfill gradually, water consistently, mulch well, and wait patiently for the spears to arrive.
Learning how to plant asparagus crowns takes one afternoon, but the payoff lasts twenty years or more.
Get the timing, depth, and soil right, and you’ll be harvesting homegrown asparagus for a very long time.
Now go grab a shovel and plant asparagus crowns this spring.