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Yes, you can plant asparagus with rhubarb, and it’s actually one of the smartest companion planting moves you can make in a perennial vegetable garden.
Both are long-lived perennials that come back year after year, so pairing them just makes sense.
Plenty of gardeners ask if you can plant asparagus with rhubarb because they want to make the most of a dedicated patch without wasting space.
The good news is these two get along beautifully when you give them what they need.
In this post, we’ll look at why you can plant asparagus with rhubarb, how to set them up properly, and the mistakes that ruin the pairing for a lot of people.
Let’s dig in.
Why You Can Plant Asparagus With Rhubarb
You can plant asparagus with rhubarb for a few solid reasons.
Here’s what makes this pairing work so well.
1. Both Are Perennial Crops With Similar Lifespans
Asparagus and rhubarb are both perennials that live for many years, often a decade or more.
That means you can plant asparagus with rhubarb once and enjoy the harvest for seasons to come.
An annual like lettuce would need replanting every year, but these two stick around.
2. They Have Compatible Soil Needs
When you plant asparagus with rhubarb, both thrive in well-drained, fertile soil rich in organic matter.
Both also prefer a slightly acidic to neutral pH, usually somewhere between 6.0 and 7.0.
Because their soil preferences overlap, you can prepare one bed that keeps both happy.
3. They Share Sunlight Requirements
If you plant asparagus with rhubarb in full sun, both will reward you generously.
Each crop wants at least six to eight hours of direct sunlight per day.
So instead of hunting for two different spots, you can plant asparagus with rhubarb side by side in the sunniest part of your garden.
4. They Occupy Different Growing Zones
Asparagus sends up tall, ferny spears while rhubarb grows big, broad leaves on thick stalks.
Because they grow at different heights and structures, they don’t compete for the same space above ground.
That’s another reason you can plant asparagus with rhubarb without one smothering the other.
How to Plant Asparagus With Rhubarb the Right Way
Knowing you can plant asparagus with rhubarb is one thing, but setting them up correctly is what makes it work.
Follow these steps to get it right.
1. Give Each Plant Enough Room
When you plant asparagus with rhubarb, spacing matters more than most people realize.
Rhubarb needs about three to four feet of space per plant because those leaves get huge.
Asparagus crowns should sit about 12 to 18 inches apart within their rows.
If you crowd them, both will struggle, so leave a clear buffer between the two crops.
2. Amend the Soil Before Planting
Before you plant asparagus with rhubarb, work plenty of compost or aged manure into the bed.
Both crops are heavy feeders and will thank you for the organic matter.
Good drainage is critical too, since soggy roots rot rhubarb crowns and asparagus crowns alike.
3. Plant at the Right Depth
When you plant asparagus with rhubarb, set asparagus crowns about six to eight inches deep in trenches.
Rhubarb crowns, on the other hand, should sit just below the soil surface with the buds barely covered.
Getting the depth right for each one keeps both healthy from the start.
4. Water Consistently
After you plant asparagus with rhubarb, keep the bed evenly moist but never waterlogged.
A deep soak once a week beats frequent light sprinkling.
Consistent moisture helps both crops establish strong root systems in their first year.
Common Mistakes When You Plant Asparagus With Rhubarb
People who plant asparagus with rhubarb often run into the same few problems.
Here’s what to avoid.
1. Harvesting Too Soon
When you plant asparagus with rhubarb, resist the urge to harvest heavily in the first year.
Asparagus needs two to three years to establish before you pick spears.
Rhubarb should also be left mostly alone in its first season so the roots can settle in.
2. Letting Rhubarb Shade the Asparagus
Rhubarb leaves can grow enormous and shade out nearby plants.
If you plant asparagus with rhubarb too close together, the rhubarb will win that fight for light.
Keep rhubarb on the north side of the bed so asparagus still gets its sun.
3. Ignoring Weeds Early On
When you first plant asparagus with rhubarb, weeds can take over fast.
Both crops hate competition while they’re getting established.
Mulch around them and hand-pull weeds regularly to keep the bed clean.
So, Can You Plant Asparagus With Rhubarb?
You can plant asparagus with rhubarb, and doing so gives you two perennial harvests from a single well-prepared bed.
Both crops share similar soil, sun, and lifespan needs, which is why they make such natural companions.
Just remember to space them properly, amend the soil, plant each at the right depth, and stay patient during those first couple of years.
If you plant asparagus with rhubarb the right way, you’ll enjoy fresh spears and tart stalks from the same patch for many seasons.