Can You Grow Rhubarb in Tennessee? A Comprehensive Guide

Rhubarb (Rheum rhaponticum) is a perennial plant prized for its edible stalks, commonly used in culinary preparations such as pies, sauces, and tarts. Its popularity as a garden plant stems from its unique flavor profile and ease of cultivation. This article delves into the specific considerations and techniques for successfully growing rhubarb in Tennessee, taking into account the state’s unique climate and growing conditions.

Climate and Growing Conditions in Tennessee

Tennessee’s climate is characterized by hot, humid summers and mild winters. The average annual temperature ranges from 55 to 60 degrees Fahrenheit. Precipitation is generally well-distributed throughout the year, with an average of 45 to 55 inches annually.

Rhubarb prefers cool temperatures and well-drained soil. It thrives in full sun but can also tolerate partial shade. The ideal soil pH for rhubarb is between 5.5 and 6.5.

Tennessee’s climate can be challenging for rhubarb cultivation due to the hot summers. However, by selecting appropriate varieties and providing proper care, it is possible to successfully grow rhubarb in the state.

Rhubarb Varieties Suitable for Tennessee

Certain rhubarb varieties have demonstrated success in Tennessee’s climate. These include:

• Canada Red: Known for its bright red stalks and sweet flavor.
• Cherry Red: Produces deep red stalks with a tart flavor.
• Crimson Red: A variety with slimmer red stalks and a mild flavor.
• MacDonald: Valued for its tender skin and bright red color.
• Valentine: A variety known for its good flavor and productivity.
• Victoria: Produces green stalks with a reddish tint and a tart flavor.

Planting Rhubarb in Tennessee

The best time to plant rhubarb in Tennessee is in early spring, before the last frost date. The soil should be well-drained and amended with compost or manure to improve fertility. Rhubarb crowns or seeds can be planted in rows or raised beds.

When planting rhubarb crowns, space them 3 to 4 feet apart and plant them 1 to 2 inches below the soil surface. Water the plants thoroughly after planting.

If starting from seeds, sow them indoors 6 to 8 weeks before the last frost date. Transplant the seedlings outdoors after the last frost date, spacing them 3 to 4 feet apart.

Care and Maintenance

Rhubarb requires regular watering, especially during hot and dry spells. Mulching around the plants helps retain moisture and suppress weeds.

Fertilize rhubarb plants in the spring with a balanced fertilizer. Avoid over-fertilization, as this can lead to excessive leaf growth and reduced stalk production.

Rhubarb is susceptible to pests and diseases, including aphids, rhubarb curculio, and crown rot. Regular monitoring and appropriate pest and disease management practices are essential for maintaining healthy plants.

Harvesting and Storing Rhubarb

Rhubarb stalks are ready for harvest when they are 12 to 18 inches long and have a firm texture. Harvest the stalks by grasping them near the base and gently twisting them until they snap off. Avoid cutting the stalks, as this can damage the plant.

Rhubarb stalks can be stored in the refrigerator for up to two weeks or frozen for up to a year.

Troubleshooting and Common Issues

Common problems encountered when growing rhubarb in Tennessee include:

• Crown rot: A fungal disease that can cause the plant to wilt and die. Avoid overwatering and improve drainage to prevent crown rot.
• Aphids: These pests can infest rhubarb plants and cause damage to the leaves. Control aphids by spraying the plants with insecticidal soap or neem oil.
• Rhubarb curculio: This beetle can lay eggs in the rhubarb stalks, causing them to become infested with larvae. Remove and destroy infested stalks to prevent the spread of the pest.

Interesting Tips and Additional Information

• Rhubarb is a perennial plant that can produce for many years with proper care.
• Rhubarb leaves are toxic and should not be consumed.
• Rhubarb is a good source of vitamins A and C, as well as potassium and calcium.
• Rhubarb festivals are held in various parts of Tennessee, celebrating the harvest and showcasing rhubarb-based dishes.

Conclusion

Growing rhubarb in Tennessee can be a rewarding experience, providing fresh and flavorful stalks for culinary use. By selecting suitable varieties, providing proper care, and addressing potential challenges, gardeners in Tennessee can successfully cultivate this unique and versatile plant.

FAQs

Can you grow rhubarb in Tennessee?

Yes, it is possible to grow rhubarb in Tennessee, but it requires careful selection of varieties and proper care due to the state’s hot and humid summers.

What are the best rhubarb varieties for Tennessee?

Suitable rhubarb varieties for Tennessee include Canada Red, Cherry Red, Crimson Red, MacDonald, Valentine, and Victoria. These varieties have demonstrated success in the state’s climate and growing conditions.

When is the best time to plant rhubarb in Tennessee?

The best time to plant rhubarb in Tennessee is in early spring, before the last frost date.

How do you care for rhubarb plants in Tennessee?

Rhubarb plants in Tennessee require regular watering, especially during hot and dry spells. Mulching around the plants helps retain moisture and suppress weeds. Fertilize rhubarb plants in the spring with a balanced fertilizer. Avoid over-fertilization, as this can lead to excessive leaf growth and reduced stalk production.

How do you harvest rhubarb stalks?

Rhubarb stalks are ready for harvest when they are 12 to 18 inches long and have a firm texture. Harvest the stalks by grasping them near the base and gently twisting them until they snap off. Avoid cutting the stalks, as this can damage the plant.

What are common problems encountered when growing rhubarb in Tennessee?

Common problems encountered when growing rhubarb in Tennessee include crown rot, aphids, and rhubarb curculio. Crown rot is a fungal disease that can cause the plant to wilt and die. Aphids are pests that can infest rhubarb plants and cause damage to the leaves. Rhubarb curculio is a beetle that can lay eggs in the rhubarb stalks, causing them to become infested with larvae.

How can you troubleshoot these problems?

To prevent crown rot, avoid overwatering and improve drainage. To control aphids, spray the plants with insecticidal soap or neem oil. To manage rhubarb curculio, remove and destroy infested stalks to prevent the spread of the pest.