Growing Rhubarb in Texas: Tips for Success

Rhubarb is traditionally considered a cool-weather crop, and growing it in a warmer climate like Texas requires special care and attention. Though it is native to cooler regions, with the right variety and proper techniques, rhubarb can thrive in Texas’ challenging climate. Here’s a guide to growing rhubarb in the Lone Star State.

1. Choosing the Right Rhubarb Variety for Texas

Since Texas experiences long, hot summers, it is crucial to select a variety of rhubarb that can handle higher temperatures, especially in the northern regions where the climate is a bit cooler. Here are some varieties that perform relatively better in warmer climates:

  • Victoria: Known for its heat tolerance and adaptability to warmer climates, this variety is often the go-to for Texas gardeners.
  • Crimson Red: A robust and productive variety that can handle moderate heat and produces bright red stalks.
  • McDonald: Another heat-tolerant variety that grows well in areas with warm climates.

2. Planting Time

Rhubarb is typically grown as a perennial, and in Texas, timing is key. The best time to plant rhubarb is in late fall or early winter, so the plants can establish themselves during the cooler months.

  • Fall Planting: In Texas, aim to plant rhubarb crowns in late October through November. This gives the plant time to settle in before the heat arrives in spring.
  • Spring Planting: In cooler parts of Texas (like the Panhandle), rhubarb can also be planted in early spring, as soon as the soil is workable. However, it’s important to ensure that the plant has enough cool weather to establish before the hot summer hits.

3. Soil Preparation

Rhubarb thrives in rich, well-drained soil with plenty of organic matter. Texas soils can vary significantly, so soil preparation is key.

  • pH Range: Rhubarb prefers a soil pH between 6.0 and 6.8. In areas where the soil tends to be more alkaline (such as in parts of West Texas), you may need to add organic matter or sulfur to lower the pH.
  • Amend the Soil: Before planting, incorporate plenty of compost or well-rotted manure into the soil. Rhubarb is a heavy feeder, so nutrient-rich soil will lead to better production.

4. Planting Rhubarb

When planting rhubarb in Texas, space is important to allow for good air circulation and root development.

  • Spacing: Plant rhubarb crowns about 2-3 feet apart, as the plants will grow large over time.
  • Depth: Dig a hole deep enough to cover the crown with about 1 inch of soil, ensuring the buds are just below the surface.

5. Mulching and Watering

Mulching is essential in Texas to help rhubarb retain moisture and regulate soil temperature.

  • Mulch: Apply a thick layer of mulch, such as straw or leaves, around the plants. This helps to keep the soil cool and moist, protecting the plant from Texas’ hot summers.
  • Watering: Rhubarb needs consistent moisture, especially during the hot summer months. Water the plant regularly, but avoid overwatering as this can lead to root rot. The key is to keep the soil moist but not soggy.

6. Heat Protection and Shading

In Texas, the biggest challenge when growing rhubarb is protecting the plant from extreme heat. Rhubarb prefers temperatures below 75°F, so consider providing shade during the hottest parts of the day, especially in central and southern Texas.

  • Shade Cloth: In extreme heat, use a shade cloth (30-50%) to protect rhubarb from direct sun.
  • Location: Plant rhubarb in a location that gets morning sun and afternoon shade to reduce heat stress.

7. Fertilizing

Since rhubarb is a heavy feeder, regular fertilization is necessary, especially in Texas, where the growing season can be extended.

  • Compost: Add compost around the base of the plant each spring to replenish nutrients.
  • Balanced Fertilizer: A balanced fertilizer (10-10-10) applied once or twice during the growing season will help keep the plant productive.

8. Harvesting

In Texas, you may need to wait until the second year before harvesting rhubarb, as the plant needs time to establish itself.

  • First Harvest: Wait until the plant is strong enough to handle harvesting, typically after two growing seasons. Harvest in the early spring before temperatures become too hot.
  • Stalk Size: Harvest stalks when they are at least 12-18 inches long. Avoid harvesting during the summer, as the heat can cause stalks to become stringy and bitter.

Conclusion

Growing rhubarb in Texas requires careful planning and attention to soil, watering, and temperature management. By choosing heat-tolerant varieties, planting in the cooler months, and providing adequate shade and moisture, you can successfully grow this cool-weather crop even in the hot Texas climate.