How to Grow Rhubarb Plant Outdoors

Rhubarb is a versatile and delicious plant that can be grown in your backyard. With its vibrant red stalks and tart flavor, rhubarb is a favorite ingredient in pies, jams, and sauces. If you want to enjoy the benefits of this unique plant, here’s a guide on how to grow rhubarb outdoors.

Choosing the Right Variety

Before you start growing rhubarb, it’s important to choose the right variety for your climate. There are different types of rhubarb available, each with its own characteristics and requirements.

For colder climates, it is recommended to choose varieties like ‘Canada Red’ or ‘Victoria’. These varieties are more resistant to cold temperatures and can withstand harsh winters. For milder climates, ‘Crimson Cherry’ or ‘Valentine’ are excellent choices.

Preparing the Soil

Rhubarb plants thrive in well-drained soil that is rich in organic matter. Before planting, prepare the soil by removing any weeds or debris. Loosen the soil to a depth of at least 12 inches and add compost or well-rotted manure to improve fertility.

It’s also important to check the pH level of the soil. Rhubarb prefers slightly acidic soil with a pH range between 6.0 and 6.8. If your soil is too alkaline, you can lower the pH by adding sulfur or peat moss.

Planting Rhubarb Crowns

Rhubarb is typically grown from crowns rather than seeds. Crowns are the divided root sections of mature rhubarb plants and are readily available at garden centers or online nurseries.

Plant rhubarb crowns in early spring or late fall when the soil is workable. Choose a sunny location in your garden with at least six hours of direct sunlight each day.

Dig a hole wide enough to accommodate the crown without bending the roots. Place the crown in the hole with the bud at or just below the soil surface. Space multiple crowns at least three feet apart to allow for proper growth.

After planting, water the crowns thoroughly to settle the soil around the roots. Mulch around the plants to conserve moisture and suppress weed growth.

Watering and Fertilizing

Rhubarb plants require consistent moisture, especially during dry periods. Water deeply once a week, providing about an inch of water each time. Avoid overhead watering to prevent foliar diseases.

To promote healthy growth, fertilize rhubarb plants in early spring and again in midsummer. Use a balanced fertilizer or compost to provide essential nutrients. Avoid over-fertilizing, as excessive nitrogen can lead to weak stalks.

Maintaining Rhubarb Plants

To ensure a productive rhubarb plant, it’s important to provide proper care and maintenance.

Weed Control: Keep the area around the rhubarb plant free from weeds. Weeds compete for nutrients and moisture, which can hinder the growth of your rhubarb.

Dividing Rhubarb: After a few years, rhubarb plants may become overcrowded and produce smaller stalks. To rejuvenate the plant, divide it every 4-5 years in early spring before new growth begins. Dig up the entire plant and divide it into smaller sections with at least two buds per division. Replant the divided sections and discard any old or weak portions.

Harvesting Rhubarb: Rhubarb stalks are typically ready for harvest in their second or third year of growth. To harvest, simply grasp the stalk near its base and pull it away from the plant with a gentle twist. Avoid cutting the stalks, as this can lead to rotting. Harvest only a few stalks at a time, leaving at least half of the plant intact to ensure continuous growth.

Winter Protection: In colder climates, it’s important to protect rhubarb plants from freezing temperatures. After the first frost, apply a layer of mulch around the base of the plant to insulate the roots. Remove the mulch in early spring when new growth starts to emerge.

Conclusion

Growing rhubarb outdoors can be a rewarding experience, allowing you to enjoy the harvest of this delicious plant in various culinary creations. By choosing the right variety, preparing the soil, and providing proper care, you can successfully grow rhubarb in your backyard. With its vibrant red stalks and tangy flavor, rhubarb is sure to become a favorite addition to your garden and kitchen.