How to Force Rhubarb in February for an Early Harvest

Introduction

Forcing rhubarb is a traditional technique that encourages early growth, resulting in tender, sweet stems that are perfect for desserts and other recipes. February is the ideal time to start forcing rhubarb as the plant is still dormant but ready to wake up with a little encouragement.

This guide explains why forcing rhubarb is beneficial, how to do it successfully, and tips for a bountiful early harvest.

Why Force Rhubarb in February?

• Early Harvest: Forcing allows you to enjoy fresh rhubarb weeks earlier than normal.
• Sweeter Stems: Forced rhubarb is less fibrous and has a milder, sweeter flavor.
• Maximizes Plant Potential: Encourages productivity during the dormant season.
• Extends Harvest Time: Staggered forcing ensures fresh rhubarb for longer periods.

What Is Forcing Rhubarb?

Forcing rhubarb involves covering the plant to exclude light and create warmer conditions. This stimulates growth, producing pale, tender stems that are ready to harvest earlier than those grown naturally.

How to Force Rhubarb in February

Step 1: Choose the Right Plants

• Established Crowns: Use plants that are at least two years old to avoid weakening them.
• Healthy Plants: Ensure crowns are robust and disease-free.

Step 2: Prepare the Rhubarb Crowns

• Clean the Area: Remove dead leaves and debris around the plant.
• Add Mulch: Apply a layer of organic mulch, such as compost or well-rotted manure, to insulate the soil.

Step 3: Cover the Crown

• Use a Forcing Pot: Traditional terracotta forcing pots are ideal. Place the pot over the crown, ensuring it excludes all light.
• Alternative Covers: Use an inverted bucket, bin, or large pot with a drainage hole. Ensure the cover is secure and allows for airflow.

Step 4: Maintain Warmth

• Insulation: Wrap the pot or cover with straw, bubble wrap, or fleece to retain heat.
• Optimal Conditions: Keep the area around the plant free from frost for consistent growth.

Step 5: Check Progress

• Monitor Growth: After 4–6 weeks, check for pale pink stems emerging from the crown.
• Harvesting: When stems reach 20–30 cm (8–12 inches), they are ready to harvest.

Tips for Successful Rhubarb Forcing

1. Rotate Crowns Annually: Avoid forcing the same plant two years in a row to prevent exhaustion.
2. Do Not Overforce: Limit forcing to one harvest per crown per year.
3. Feed the Plant After Forcing: Once forcing is complete, remove the cover and feed the plant with compost or manure to help it recover.
4. Choose Early Varieties: Varieties like ‘Timperley Early’ and ‘Victoria’ are ideal for forcing.
5. Provide Consistent Care: Ensure crowns are not exposed to frost or excessive moisture during forcing.

Benefits of Forcing Rhubarb

• Delicate Flavor: Forced rhubarb is less tart, making it ideal for desserts.
• Tender Stems: Pale, tender stems are easier to cook and enjoy.
• Aesthetic Appeal: Forced rhubarb has a beautiful pink color that enhances dishes.
• Efficient Use of Space: Forcing utilizes dormant garden areas in winter.

Common Mistakes to Avoid

1. Using Young Plants

Avoid forcing crowns less than two years old, as this can weaken the plant.

2. Overcrowding the Crown

Ensure there is adequate airflow to prevent mold and rot under the cover.

3. Forcing Too Long

Harvest promptly to avoid spindly or overgrown stems.

4. Neglecting the Plant Post-Forcing

Failing to feed and care for the plant after forcing can reduce its productivity in subsequent years.

5. Inconsistent Conditions

Fluctuating temperatures or light exposure can hinder growth.

How to Harvest Forced Rhubarb

• Timing: Harvest stems when they are pale pink and about 8–12 inches long.
• Method: Twist stems gently at the base and pull to avoid damaging the crown.
• Do Not Overharvest: Leave a few stems on the plant to allow it to recover.

Top 10 Questions About Forcing Rhubarb

1. What is the best time to start forcing rhubarb?
February is ideal as the plant is dormant but ready to grow with stimulation.

2. Can I force rhubarb indoors?
Yes, you can dig up a crown and place it in a large pot indoors in a dark, cool space.

3. How long does it take to force rhubarb?
Typically, 4–6 weeks depending on the variety and conditions.

4. Can I force rhubarb without a forcing pot?
Yes, use an inverted bucket, bin, or large pot as an alternative.

5. What varieties are best for forcing?
‘Timperley Early,’ ‘Victoria,’ and ‘Stockbridge Arrow’ are excellent choices.

6. How often can I force rhubarb?
Force a crown no more than once every two years to avoid exhausting the plant.

7. Do I need to feed rhubarb after forcing?
Yes, apply compost or well-rotted manure to help the plant recover.

8. Can forced rhubarb grow in frost?
Frost can damage forced rhubarb. Insulate covers to maintain warmth.

9. What happens if I don’t harvest forced rhubarb?
Overgrown stems may become spindly and less flavorful. Harvest promptly.

10. Can I eat forced rhubarb leaves?
No, rhubarb leaves are toxic and should never be consumed.

Conclusion

Forcing rhubarb in February is a rewarding way to enjoy an early harvest of tender, sweet stems. By following the right techniques and caring for your crowns, you’ll produce delicious rhubarb perfect for pies, crumbles, and other treats. With minimal effort and some patience, you can transform a dormant plant into a vibrant addition to your kitchen.

Start forcing your rhubarb today and enjoy the benefits of this traditional gardening technique!