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Rhubarb and asparagus can grow well together when you plan their spacing and soil needs carefully.
Both are perennial vegetables that come back year after year, so once you get them settled, they can share the same garden space for a long time.
The trick is understanding that rhubarb and asparagus grow well together only if you give each plant what it needs without letting one crowd or outcompete the other.
If you’ve been wondering whether rhubarb and asparagus grow well together in the same bed, the short answer is yes, but with a few important caveats.
In this post, we’ll look at why rhubarb and asparagus grow well together, how to plant them side by side, and the common mistakes that can ruin the pairing.
Let’s dig in.
Why Rhubarb and Asparagus Grow Well Together
Rhubarb and asparagus grow well together for several practical reasons.
Both are long-lived perennials, so they won’t need to be rotated or replanted every season like annual vegetables do.
That means you can set up a permanent bed where rhubarb and asparagus grow well together without disturbing the soil each year.
1. They Share Similar Soil Preferences
Rhubarb and asparagus grow well together because they both love well-drained, fertile soil rich in organic matter.
Neither plant enjoys sitting in soggy, waterlogged ground, and both benefit from a pH between 6.0 and 7.0.
When you amend the bed with compost or aged manure, you’re feeding both plants at the same time, which is one reason rhubarb and asparagus grow well together so easily.
2. They Have Complementary Growing Habits
Asparagus sends up tall, ferny spears that can reach four to six feet, while rhubarb grows in a low, broad clump of large leaves.
This difference in height and shape means rhubarb and asparagus grow well together without competing for the same light.
The asparagus reaches up for the sun while the rhubarb spreads out near the ground, so the two plants occupy different layers of the garden.
3. They’re Both Heavy Feeders That Benefit From the Same Care
Another reason rhubarb and asparagus grow well together is that both are hungry plants that respond well to regular feeding.
A yearly top dressing of compost or a balanced organic fertilizer keeps both happy.
Since they have similar appetites, you don’t have to juggle different feeding schedules, which makes growing rhubarb and asparagus together much simpler.
4. They Have Different Harvest Windows
Rhubarb is typically harvested in spring and early summer, while asparagus is picked in spring as well but stops once the spears get thin.
Because their peak harvests overlap only briefly, rhubarb and asparagus grow well together without one stealing the show from the other.
You get fresh stalks early and tender spears around the same time, making for a productive spring garden.
How to Plant Rhubarb and Asparagus Together
If you want rhubarb and asparagus to grow well together, the planting stage is where you set yourself up for success.
Get this part right and the pair will thrive for years.
1. Give Each Plant Plenty of Space
Rhubarb needs about three to four feet of space in every direction because its leaves get huge.
Asparagus crowns should be spaced about 12 to 18 inches apart in rows that are three to four feet apart.
If you plant rhubarb and asparagus too close, they’ll compete for nutrients and water, and that’s when growing rhubarb and asparagus together stops working.
2. Prepare a Deep, Rich Bed
Both plants have deep root systems, so loosen the soil at least 12 to 18 inches down before planting.
Mix in plenty of compost and a handful of bone meal or rock phosphate to support strong root growth.
A well-prepared bed is the foundation that lets rhubarb and asparagus grow well together season after season.
3. Plant at the Right Depth
Asparagus crowns should sit about six inches deep, while rhubarb crowns should be planted so the buds sit just below the soil surface.
Planting at the correct depth helps both establish quickly, and it’s a key step if you want rhubarb and asparagus to grow well together.
4. Water Consistently but Don’t Overwater
Both plants need steady moisture, especially in their first year.
But neither likes wet feet, so make sure the bed drains well.
Consistent watering without soggy soil is what keeps rhubarb and asparagus growing well together through hot spells.
Common Mistakes When Growing Rhubarb and Asparagus Together
Even though rhubarb and asparagus grow well together, a few missteps can cause problems.
1. Planting Them Too Close
Crowding is the number one reason rhubarb and asparagus don’t grow well together.
When rhubarb leaves shade young asparagus spears, the asparagus suffers.
And when asparagus roots tangle with rhubarb roots, both plants struggle for nutrients.
2. Harvesting Too Early
Both plants need a year or two to establish before you harvest heavily.
If you cut rhubarb or asparagus too aggressively in the first season, you weaken the plants, and that can stop rhubarb and asparagus from growing well together long-term.
3. Letting Weeds Take Over
Young asparagus and rhubarb don’t compete well with weeds.
Mulch around both plants to suppress weeds and keep moisture even.
A clean bed helps rhubarb and asparagus grow well together without extra stress.
So, Do Rhubarb and Asparagus Grow Well Together?
Rhubarb and asparagus grow well together when you give them the right spacing, soil, and care.
Both are perennials that share similar soil and feeding needs, and their different growth habits mean they don’t compete for light.
As long as you plant them with enough room, prepare a deep, rich bed, and avoid common mistakes like overcrowding or early harvesting, rhubarb and asparagus will grow well together for many years.
With a little patience, you’ll have a productive perennial bed that rewards you every spring.