How to Force Rhubarb Indoors: A Comprehensive Guide

Forcing rhubarb indoors is a technique employed by gardeners to obtain an early harvest of this delectable vegetable. By manipulating environmental conditions, indoor forcing accelerates the growth of rhubarb, allowing for its enjoyment weeks before the traditional outdoor season. This article delves into the intricacies of indoor rhubarb forcing, covering topics such as suitable varieties, preparation, forcing techniques, care and maintenance, harvesting, post-forcing care, and culinary applications.

What is Forced Rhubarb?

Forced rhubarb is a unique variation of traditionally grown rhubarb that is cultivated indoors under controlled conditions. This process results in tender, pale pink stalks with a delicate flavor and reduced bitterness compared to outdoor-grown rhubarb. Forced rhubarb is highly prized for its early availability and superior taste, making it a sought-after ingredient in culinary creations.

Choosing the Right Rhubarb Variety

Selecting the appropriate rhubarb variety is crucial for successful indoor forcing. Ideal varieties possess characteristics such as early maturity, high yields, and adaptability to indoor conditions. Some recommended varieties for indoor forcing include:

  • ‘Timperley Early’: Known for its early harvests and vigorous growth.
  • ‘Victoria’: A classic variety valued for its reliable yields and excellent flavor.
  • ‘Stockbridge Arrow’: A variety known for its deep red stalks and high productivity.

Preparation and Timing

The ideal time to initiate the forcing process is during the late fall or early winter months, before the onset of freezing temperatures. Prior to forcing, rhubarb crowns should undergo a period of chilling, typically achieved by exposing them to temperatures between 32°F and 40°F (0°C and 4°C) for several weeks. This chilling period simulates the natural dormancy experienced by rhubarb during winter and promotes successful forcing.

Creating the Ideal Environment

Successful indoor forcing relies on replicating the optimal conditions for rhubarb growth. These include:

  • Temperature: Rhubarb thrives in cool temperatures ranging from 50°F to 60°F (10°C to 16°C).
  • Light: Rhubarb requires darkness or minimal light during the forcing period to promote etiolation, the process responsible for the pale color and tender texture of forced rhubarb.

Home gardeners can create these conditions by utilizing various methods, such as placing rhubarb crowns in a cool cellar, garage, or dark shed. Alternatively, specialized forcing pots or jars can be employed to exclude light and maintain the desired temperature.

Forcing Techniques

Several techniques can be used to force rhubarb indoors. Common methods include:

  • Potting: Rhubarb crowns are planted in large pots filled with a well-draining potting mix. The pots are then placed in a cool, dark location.
  • Forcing Jars: Rhubarb crowns are placed in specially designed forcing jars or containers that block light and maintain warmth.
  • Dark Forcing: Rhubarb crowns are covered with an opaque material, such as a bucket or bin, to exclude light and promote etiolation.

Care and Maintenance

During the forcing period, proper care and maintenance are essential for the health and productivity of rhubarb plants:

  • Watering: Rhubarb requires regular watering to maintain moist soil conditions. However, overwatering should be avoided to prevent root rot.
  • Fertilization: Applying a balanced fertilizer every few weeks provides essential nutrients for optimal growth.
  • Pest Control: Monitor rhubarb plants for pests and diseases, and take appropriate measures to control infestations.

Harvesting Forced Rhubarb

Forced rhubarb is ready for harvest when the stalks reach a length of 12 to 18 inches (30 to 45 centimeters). To harvest, gently pull the stalks from the base of the crown, taking care not to damage the plant.

Post-Forcing Care

After the forcing period, rhubarb plants should be allowed to recover and regain their strength before the next forcing cycle. This involves gradually transitioning the plants back to outdoor conditions and providing them with proper care, including adequate sunlight, water, and nutrients.

Recipes and Culinary Tips

Forced rhubarb offers a versatile ingredient for various culinary creations. Its delicate flavor and tender texture make it ideal for use in pies, tarts, crumbles, and other desserts. Additionally, forced rhubarb can be enjoyed stewed, roasted, or used as a refreshing addition to salads.

Conclusion

Forcing rhubarb indoors is a rewarding practice that allows gardeners to enjoy this delectable vegetable well before the traditional outdoor season. By following the techniques and guidelines outlined in this article, home gardeners can successfully cultivate forced rhubarb and savor its unique flavor and early availability. Whether used in sweet or savory dishes, forced rhubarb adds a touch of elegance and sophistication to any culinary creation.

References

FAQs

What is forcing rhubarb indoors?

Forcing rhubarb indoors is a technique used to accelerate the growth of rhubarb plants in a controlled indoor environment, allowing for an earlier harvest.

Why force rhubarb indoors?

Forcing rhubarb indoors offers several benefits, including:

  • Earlier harvest: Enjoy rhubarb weeks before the traditional outdoor season.
  • Tender and flavorful: Forced rhubarb has a delicate texture and reduced bitterness compared to outdoor-grown rhubarb.
  • Year-round availability: Indoor forcing allows for a continuous supply of rhubarb, even during the off-season.

What is the best time to force rhubarb indoors?

The ideal time to initiate indoor forcing is during the late fall or early winter months, before the onset of freezing temperatures.

How do I prepare rhubarb crowns for indoor forcing?

Prior to forcing, rhubarb crowns should undergo a period of chilling, typically achieved by exposing them to temperatures between 32°F and 40°F (0°C and 4°C) for several weeks. This simulates the natural dormancy experienced by rhubarb during winter and promotes successful forcing.

What are the different methods for forcing rhubarb indoors?

Common methods for forcing rhubarb indoors include:

  • Potting: Planting rhubarb crowns in large pots filled with a well-draining potting mix and placing them in a cool, dark location.
  • Forcing Jars: Using specially designed forcing jars or containers that block light and maintain warmth to house rhubarb crowns.
  • Dark Forcing: Covering rhubarb crowns with an opaque material, such as a bucket or bin, to exclude light and promote etiolation.

How do I care for forced rhubarb plants?

During the forcing period, proper care and maintenance are essential for the health and productivity of rhubarb plants:

  • Watering: Provide regular watering to maintain moist soil conditions, but avoid overwatering to prevent root rot.
  • Fertilization: Apply a balanced fertilizer every few weeks to provide essential nutrients for optimal growth.
  • Pest Control: Monitor rhubarb plants for pests and diseases, and take appropriate measures to control infestations.

When is forced rhubarb ready for harvest?

Forced rhubarb is ready for harvest when the stalks reach a length of 12 to 18 inches (30 to 45 centimeters).

How do I harvest forced rhubarb?

To harvest forced rhubarb, gently pull the stalks from the base of the crown, taking care not to damage the plant.

What should I do with forced rhubarb after harvest?

After harvest, rhubarb plants should be allowed to recover and regain their strength before the next forcing cycle. This involves gradually transitioning the plants back to outdoor conditions and providing them with proper care, including adequate sunlight, water, and nutrients.

How can I use forced rhubarb in cooking?

Forced rhubarb is a versatile ingredient for various culinary creations. Its delicate flavor and tender texture make it ideal for use in pies, tarts, crumbles, and other desserts. Additionally, forced rhubarb can be enjoyed stewed, roasted, or used as a refreshing addition to salads.