Your Cool Home is supported by its readers. Please assume all links are affiliate links. If you purchase something from one of our links, we make a small commission from Amazon. Thank you!
Yes, you can plant rhubarb with asparagus, and it’s actually a pretty smart pairing if you get the growing conditions right.
Both are perennial vegetables that come back year after year, so once they’re established, you get two harvests from the same patch.
The tricky part is that rhubarb and asparagus have slightly different needs, so you’ll want to plan carefully before tucking them in together.
In this post, we’ll walk through whether you can plant rhubarb with asparagus, how to make the pairing work, and the mistakes to avoid.
Let’s dig in.
Why You Can Plant Rhubarb With Asparagus
You can plant rhubarb with asparagus because both crops are hardy perennials that thrive in similar climates.
They both love cool springs, tolerate cold winters, and produce for years with minimal fuss.
Here’s why this companion planting duo works so well:
1. Both Are Long-Lived Perennials
Rhubarb and asparagus are both long-term investments in your garden.
Asparagus can produce for 15 to 20 years, and rhubarb can keep going for a decade or more.
Since you plant rhubarb with asparagus only once, you avoid disturbing either crop’s roots year after year.
That’s a big deal because both plants hate being moved once they’re settled in.
2. They Share Similar Soil Preferences
When you plant rhubarb with asparagus, you’re pairing two plants that both crave well-drained, fertile soil.
Both love soil rich in organic matter with a pH between 6.0 and 7.0.
If you amend your bed with compost and aged manure before planting, both crops will be happy campers.
3. They Have Compatible Sun Needs
Plant rhubarb with asparagus in full sun, and both will reward you handsomely.
Each crop wants at least six hours of direct sunlight daily.
Asparagus spears shoot up faster in bright spots, while rhubarb stalks stay thick and tender when they get plenty of light.
The one caveat is that rhubarb appreciates a little afternoon shade in scorching climates, so keep an eye on how your patch performs.
4. Their Root Systems Don’t Compete Much
Asparagus roots grow deep and wide, while rhubarb roots stay closer to the surface.
That means when you plant rhubarb with asparagus, their roots occupy different zones in the soil.
They won’t choke each other out the way two shallow-rooted feeders would.
How to Plant Rhubarb With Asparagus the Right Way
If you want to plant rhubarb with asparagus successfully, spacing is everything.
Here’s how to set up your bed:
1. Give Each Plant Room to Breathe
Space asparagus crowns about 12 to 18 inches apart in rows.
Then plant rhubarb crowns at least 3 feet away from the asparagus rows.
Rhubarb gets huge, and its leaves will shade out young asparagus spears if you crowd them.
2. Plant at the Right Depth
Asparagus crowns go about 6 to 8 inches deep in trenches.
Rhubarb crowns should sit just 1 to 2 inches below the soil surface with the buds facing up.
Getting the depth right the first time matters because you can’t easily fix it later.
3. Amend the Soil Before You Plant
Mix in plenty of compost and a balanced organic fertilizer before you plant rhubarb with asparagus.
Both crops are heavy feeders, so a nutrient-rich start pays off for years.
Good drainage is non-negotiable too, since soggy roots rot both plants fast.
4. Water Deeply but Don’t Drown Them
Water your rhubarb and asparagus bed about an inch per week.
Deep, infrequent watering pushes roots downward and builds stronger plants.
Just never let the bed sit in standing water, especially in clay soil.
Common Mistakes When You Plant Rhubarb With Asparagus
Even though you can plant rhubarb with asparagus, a few slip-ups can ruin the whole patch.
Here’s what to watch out for:
1. Harvesting Too Soon
Resist the urge to harvest asparagus spears in the first two years after planting.
Same goes for rhubarb, which needs a full year to establish before you pull stalks.
Patience now means decades of harvests later.
2. Letting Rhubarb Bully the Asparagus
Rhubarb leaves grow massive and can shade out nearby spears.
When you plant rhubarb with asparagus, keep the rhubarb on the north side of the bed so it doesn’t block morning sun.
Trim back any leaves that start crowding your spears.
3. Skipping Mulch
A layer of straw or shredded leaves keeps moisture in and weeds down.
Mulch also keeps rhubarb crowns cool in summer and protects asparagus from winter freezes.
Just keep mulch a couple inches away from the crowns themselves.
4. Planting in a Low Spot
Neither crop tolerates wet feet.
If your bed collects water after rain, build it up into a raised bed before you plant rhubarb with asparagus.
So, Can You Plant Rhubarb With Asparagus?
You can plant rhubarb with asparagus, and the pairing can thrive for years when you give both crops the space and soil they need.
Both are perennials that love sun, good drainage, and rich organic matter.
Just keep rhubarb a few feet from your asparagus rows, plant at the right depth, and be patient during the first couple of seasons.
Do that, and your rhubarb and asparagus bed will keep feeding you for a decade or more.