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How to Care for Rhubarb Plant

Updated: July 25, 2023

Rhubarb is a unique and versatile plant that is prized for its tart, crisp stalks. It is a perennial plant that can be grown in most regions, making it a popular choice for gardeners. However, like any plant, rhubarb requires proper care and maintenance to thrive. In this article, we will discuss the essential steps to care for your rhubarb plant and ensure a bountiful harvest.

Choosing the Right Location

The first step in caring for your rhubarb plant is selecting the right location. Rhubarb prefers full sun but can tolerate partial shade. It is important to choose a spot that receives at least six hours of direct sunlight daily. Additionally, ensure that the soil is well-drained, as rhubarb does not tolerate waterlogged conditions.

Soil Preparation

Before planting your rhubarb, it is crucial to prepare the soil properly. Rhubarb thrives in fertile, well-draining soil with a pH level between 5.5 and 7.0. Start by removing any weeds or grass from the planting area. Then, dig a hole that is large enough to accommodate the root system of your rhubarb plant.

To improve drainage, add organic matter such as compost or well-rotted manure to the soil. This will also help enrich the soil with essential nutrients. Mix the organic matter thoroughly with the existing soil before planting your rhubarb.

Planting Rhubarb

Rhubarb can be planted either in the spring or fall, depending on your region’s climate. Ensure that your rhubarb crowns are healthy with firm buds before planting them. Space each crown at least three feet apart to allow sufficient room for growth.

When planting, position the crown so that the top bud is 1-2 inches below the surface of the soil. Firmly press the soil around the crown to eliminate air pockets. Water the newly planted rhubarb thoroughly to settle the soil.

Watering and Mulching

Proper watering is crucial for the healthy growth of your rhubarb plant. While rhubarb is a relatively drought-tolerant plant, it still requires consistent moisture throughout the growing season. Water your rhubarb deeply once a week, providing about an inch of water.

To help retain moisture and suppress weeds, apply a layer of mulch around the base of your rhubarb plants. Mulching will also help regulate soil temperature and prevent extreme fluctuations. Use organic mulch such as straw or wood chips, and replenish it as needed.

Fertilizing

To ensure vigorous growth and high-quality stalks, it is essential to provide your rhubarb plants with adequate nutrition. Before planting, incorporate a balanced fertilizer into the soil according to the package instructions.

In subsequent years, apply a side dressing of compost or well-rotted manure in early spring when new growth appears. This will supply your rhubarb with essential nutrients and improve soil fertility. Avoid applying nitrogen-rich fertilizers later in the season, as this may promote excessive leaf growth at the expense of stalk development.

Weed Control

Weeds can compete with your rhubarb plants for nutrients and water, so it is crucial to keep them under control. Regularly inspect your planting area for weeds and remove them promptly. Hand pulling is often sufficient for small weed populations. Mulching will also help suppress weed growth.

Harvesting Rhubarb

Rhubarb can be harvested when the stalks are thick and crisp, usually in its second or third year of growth. To harvest, firmly grasp the base of the stalk near the ground and pull upward with a slight twist. Avoid cutting or damaging the crown or any developing buds during harvest.

Harvest only a third to half of the stalks at a time, leaving the rest to continue growing. This will ensure that your rhubarb plant remains healthy and productive throughout the season. Remember to remove any flower stalks that appear, as they divert energy away from stalk production.

Winter Care

In colder regions, rhubarb plants require protection during the winter months. After the first frost, cut back the foliage to a few inches above the ground. Remove any dead leaves or debris around the plants to prevent disease and pests.

Apply a layer of mulch around the base of the plants to insulate the crowns and protect them from freezing temperatures. Straw or shredded leaves make excellent winter mulches for rhubarb.

Conclusion

Caring for your rhubarb plant is relatively simple but requires attention to detail. By selecting the right location, preparing the soil, providing proper watering and nutrition, controlling weeds, and harvesting correctly, you can enjoy a bountiful supply of rhubarb stalks year after year. With just a little bit of care, your rhubarb plant will reward you with its tangy goodness and vibrant addition to your garden.