Vegetables
Planting rhubarb crowns in early spring gives you a cold-hardy perennial that keeps producing for decades. đ± I learned the hard way that rhubarb thrives when planted deep and spaced wideâmy first attempt had crowded plants competing for sunlight and nutrients.
The key is rich soil, patience, and knowing exactly when to tuck those roots into the earth. Youâll need a sunny spot with well-draining soil, a shovel, and a few healthy crowns (not roots). Dig trenches about 12 inches deep and 2 feet apartârhubarb spreads, so give it room.
Amend the soil with compost, and plant crowns with the buds facing up, just below the surface. Water thoroughly but avoid soggy soil, which invites rot. Within a year, youâll see sturdy stalks emerging, and by year two, youâll have enough for pies, jams, and sharing with neighbors.
The plants grow 3-4 feet tall, with deep red or green stalks that stay productive for 10+ years if cared for properly. Just avoid harvesting heavily the first yearâlet the plant establish roots.
This method works in zones 3-8, handles frost like a champ, and rewards patience with minimal effort. Once planted, rhubarb needs little more than occasional watering and mulch to keep weeds at bay. Hereâs how to get started without the common mistakes that trip up beginners.
📚 In This Guide
- What you need
- Instructions
- Tips and common mistakes
- Wrapping up and next steps
What you need
- ● Rhubarb plants: 1â3 crowns (bare-root or potted) â choose disease-resistant varieties like Victoria or Strawberry for best results.
- ● Well-draining soil: A mix of compost (20â30%) and native soil (70â80%)ârhubarb hates soggy roots!
- ● Organic mulch: 2â3 inches of straw, wood chips, or shredded leaves to retain moisture and suppress weeds.
- ● Balanced fertilizer: 5-10-10 or low-nitrogen (e.g., 3-4-6) to avoid leafy growth over stalks.
- ● Garden trowel or spade: For digging holes (6â8 inches deep).
- ● Garden fork: To loosen compacted soil before planting.
- ● Watering can or hose: With a gentle spray nozzle for hydration.
- ○ Gloves: Optional but helpful for handling prickly leaves.
- ● Sunlight: Full sun (6+ hours/day) or partial shade (4â6 hours) in hot climates.
- ● pH level: Slightly acidic to neutral soil (6.0â7.0). Test with a soil pH kit if unsure.
- ● Spacious plot: Minimum 3 feet between plants (they spread over time!).
- ● Patience: Rhubarb takes 2â3 years to reach peak harvestâworth the wait!
Instructions for planting rhubarb plants
Here's how I've planted rhubarb successfully in zones 3-8âno fancy tools or years of experience required.
đȘŽ Step 1: Choose the Perfect Spot and Prepare the Soil
Rhubarb thrives in full sun to partial shadeâI pick a location that gets at least 6 hours of sunlight daily but isn't scorched by afternoon heat. The soil must drain well but retain moisture, so I avoid low spots where water pools. Test your spot by digging a 12-inch deep holeâif water lingers after 30 minutes, amend the soil with 2 inches of compost mixed into the top 6 inches.
Rhubarb roots spread aggressively, so space your plants 4-6 feet apart in all directions. If planting multiple crowns, leave 8 feet between rows for easy harvesting. I mark the spots with stakes so I don't accidentally plant too closeâcrowded rhubarb produces small, tough stalks.
đ± Step 2: Plant Crowns at the Right Depth and Spacing
Dig planting holes that are 12-18 inches wide and deepârhubarb's thick roots need room to establish. Place each crown so the buds (little bumps) sit 2 inches below soil level. I gently spread the roots outward slightly in the hole before covering them, which encourages wider growth. If your crowns are bare-root, soak them in lukewarm water for 1 hour before planting to wake up dormant roots.
Fill the hole with soil, pressing lightly around the crown to eliminate air pockets. Water immediately after planting to settle the soil and remove any gaps. You'll see the first signs of success when new shoots emerge in 2-3 weeksâthat's your cue everything's settled properly.
âïž Step 3: Mulch and Water for Strong Establishment
Spread 3-4 inches of organic mulch around each plant, keeping it 4 inches away from the crown to prevent rot. I use straw or shredded leaves because they break down slowly and improve soil structure over time. Mulch also keeps roots cool in summer and insulated in winterârhubarb's cold-hardy but hates temperature swings.
Water deeply once a week during the first growing season, aiming for 1 inch of water per week. You'll know you're doing it right when the soil stays consistently moist but not soggy. Avoid overhead watering after plantingâit can dislodge the crown or spread disease. Instead, use a soaker hose or water at the base.
âïž Step 4: First-Year Care to Build a Healthy Plant
Here's the thingânever harvest rhubarb in its first year. The plant needs all its energy to establish a strong root system. You'll see thick, leafy growth, but resist the urge to pick stalks. In year two, you can harvest 2-3 stalks per plant in early spring, but never take more than 1/3 of the plant at once.
Fertilize lightly in early spring with 10-10-10 fertilizer at half strength. I scatter the granules around the base and water them in. Too much fertilizer makes rhubarb produce lots of leaves but few stalks. Watch for yellowing leavesâthey usually signal overwatering or too much fertilizer. Adjust your watering or skip the fertilizer that year.
â° Step 5: Winter Protection for Long-Term Success
Once temperatures drop below 20°F, mound 6-8 inches of straw or leaves over the crown. This protects the buds from freezing and thawing cycles that can damage the plant. I remove the mulch in early spring once the ground thaws, but leave some around the base to retain moisture as new shoots emerge.
Rhubarb's perennial, so it'll come back year after year with proper care. By year three, you'll have a robust plant that produces dozens of stalks per harvest. The key is patienceâskipping harvests in the first year pays off with bigger, sweeter stalks for years to come.
Tips & tricks for planting rhubarb plants
Took me a while to figure these out, so here's what actually makes a difference with rhubarb.
Sunlight and Soil Test: That 6 hours of sunlight is non-negotiable, but don't assume your spot qualifies. Test your location by observing it for a full dayâmorning sun is ideal, but afternoon shade helps in hotter zones. For the soil test, dig your 12-inch hole in the hottest part of the dayâif water still lingers after 30 minutes, you'll need to create raised beds or add more compost than the 2 inches mentioned. Rhubarb hates soggy roots!
Root Soaking Secret: The 1-hour lukewarm water soak for bare-root crowns might seem minor, but it's crucial. Cold water shocks the roots, while hot water can damage them. I use water around 70°Fâjust warm enough to feel comfortable to the touch. This simple step doubles your success rate with dormant crowns.
Mulch Placement Matters: Keeping that 3-4 inches of mulch 4 inches away from the crown isn't just about preventing rotâit's about creating the perfect microclimate. Too close and you'll suffocate the crown; too far and you lose the insulation benefits. I use a garden rake to create a slight depression around the crown before adding mulch, which helps channel water away while maintaining temperature regulation.
First-Year Visual Cues: Those new shoots emerging in 2-3 weeks are your first sign of success, but don't confuse them with weeds. Look for thick, deep green stalks with buds at the topâthese are your future harvests. If you see mostly leaves with no stalks after 6 weeks, your plant needs more sunlight or less fertilizer. The key is patienceâwait until year two before harvesting any stalks, no matter how tempting they look!
Pro Tips for Planting Rhubarb Plants
- Took me a while to figure these out, so here's what actually makes a difference with rhubarb.
- Sunlight and Soil Test: That 6 hours of sunlight is non-negotiable, but don't assume your spot qualifies. Test your l...
- Root Soaking Secret: The 1-hour lukewarm water soak for bare-root crowns might seem minor, but it's crucial. Cold wat...
Frequently asked questions
Got questions about planting rhubarb? Youâre not alone! Here are answers to the most common queries to help you grow this cold-hardy perennial with confidence.
When is the best time to plant rhubarb?
Plant rhubarb in early spring (as soon as the soil is workable) or in fall (4-6 weeks before your first frost). Avoid planting in summer heat, which can stress young roots. If youâre in a mild climate, fall planting gives roots time to establish before winter.
Can rhubarb survive harsh winters?
Yes! Rhubarb is one of the most cold-hardy perennials, thriving in USDA Zones 3-8. Mulch heavily (3-4 inches of straw or leaves) after the ground freezes to protect roots. In extreme cold, evergreen boughs can also shield the crown. Just avoid disturbing the soil in winter.
How far apart should I space rhubarb plants?
Give each rhubarb plant 3 feet of space in all directions. This prevents overcrowding, which leads to smaller stalks and disease. If youâre short on space, you can squeeze them into 2 feet apart, but expect slower growth and more competition.
Why isnât my rhubarb growing after planting?
Slow growth is often due to poor soil, too much shade, or over-fertilizing. Rhubarb prefers well-draining, slightly acidic soil (pH 6.0-6.8) and 6+ hours of sun daily. Avoid nitrogen-heavy fertilizersâtoo much promotes leafy growth over stalks. Be patient; established plants take 2-3 years to reach full productivity.
Can I eat rhubarb the first year after planting?
Nope! First-year rhubarb focuses on root and leaf growth, not stalks. Harvesting too early weakens the plant. Wait until year 2 or 3 for a bountiful crop. Even then, limit harvests to 1/3 of the stalks to keep the plant healthy.
Wrapping up and next steps
Planting rhubarb is a rewarding way to grow a hardy, low-maintenance perennial that keeps giving year after year! With the right location, soil prep, and care, your rhubarb patch will thriveâproducing tender stalks for pies, compotes, and more.
Whether youâre a beginner or seasoned gardener, the key is patience (rhubarb takes 2â3 years to mature) and consistency.
Now that youâre ready to plant, take the first step todayâmark your garden spot, gather your supplies, and dig in! Soon, youâll be harvesting vibrant, homegrown rhubarb to enjoy for seasons to come. Happy gardening! đ±đœïž