Growing rhubarb in a container can be a great option if you don’t have a suitable garden space or if you want to have more control over its growing conditions. While rhubarb is traditionally grown in the ground, it can adapt well to container gardening with a few considerations.
Firstly, choose a large container that is at least 18 inches deep and wide. This will provide enough space for the rhubarb’s extensive root system to develop. Make sure the container has drainage holes to prevent waterlogging, as rhubarb dislikes being waterlogged in winter.
Next, select a sunny location for your container. Rhubarb thrives in full sun, so choose a spot that receives at least 6-8 hours of direct sunlight each day. This will help to promote healthy growth and ensure the plants produce strong, vibrant stems.
When it comes to soil, rhubarb prefers moist, well-draining soil. Use a good quality potting mix that is rich in organic matter. This will provide the necessary nutrients and ensure good drainage. Avoid using heavy clay soil or soil that retains too much moisture, as this can lead to root rot.
Planting rhubarb in a container is similar to planting it in the ground. Dig a hole in the potting mix that is large enough to accommodate the rhubarb crown. Place the crown in the hole, making sure the top is level with the soil surface. Backfill the hole, firming the soil gently around the crown. Water the plant thoroughly after planting to settle the soil.
During the growing season, it’s important to keep the soil consistently moist. Check the soil moisture regularly and water whenever the top inch of soil feels dry. Be careful not to overwater, as this can lead to root rot. Mulching the surface of the soil with organic matter can help to retain moisture and suppress weeds.
Fertilizing rhubarb in containers is important to ensure it receives the necessary nutrients. Apply a balanced, slow-release fertilizer in early spring and again in midsummer. Follow the instructions on the fertilizer packaging for application rates. Additionally, you can supplement with liquid fertilizer every few weeks during the growing season to promote strong growth.
As with any container plant, rhubarb may require repotting after a few years. If you notice the plant becoming root-bound or the growth declining, it may be time to repot into a larger container. Spring is the best time to do this before new growth starts.
In terms of harvesting, you can start harvesting rhubarb stalks in the second year after planting. Avoid harvesting all the stalks at once, as this can weaken the plant. Instead, only harvest a few stalks at a time, leaving the majority of the plant to continue growing.
While rhubarb is traditionally grown in the ground, it can also be successfully grown in containers. By providing a large container, a sunny location, well-drained soil, and proper care, you can enjoy the delicious stalks of rhubarb even in a limited garden space.
