Rhubarb, with its tart stalks and vibrant color, is a favorite among kitchen gardeners. It’s relatively easy to grow and can be incredibly rewarding if done right. To ensure you enjoy a bountiful rhubarb harvest this year, we’ve compiled a list of common mistakes to avoid. Follow these tips and watch your rhubarb thrive!
1. Planting in Poorly Drained Soil
Rhubarb needs well-drained soil to prevent root rot. Avoid planting it in areas where water tends to pool after rain. If your garden has heavy clay soil, consider adding organic matter to improve drainage or planting rhubarb in raised beds.
2. Overcrowding the Plants
Rhubarb requires space to grow. Plant crowns at least 3 feet apart to give them room to spread out and access sufficient nutrients. Overcrowding can lead to stunted growth and reduced yields.
3. Harvesting Too Early
Patience is key with rhubarb. Avoid harvesting stalks in the first year after planting, and only take a light harvest in the second year. This allows the plant to establish a strong root system. By the third year, you can begin harvesting more generously.
4. Neglecting to Mulch
Mulching around rhubarb plants helps retain moisture, suppress weeds, and regulate soil temperature. Use organic mulch, such as straw or compost, and refresh it as needed throughout the growing season.
5. Ignoring Fertilization Needs
Rhubarb is a heavy feeder and benefits from regular feeding. In early spring, apply a balanced fertilizer or a generous layer of compost around the plants. Avoid over-fertilizing with high-nitrogen products, as this can lead to excessive leaf growth at the expense of stalks.
6. Forgetting to Divide Older Plants
As rhubarb plants age, they can become crowded and less productive. Every 5-7 years, divide the crowns in early spring or late fall. This rejuvenates the plant and promotes healthy growth and higher yields.
7. Leaving Flower Stalks
When rhubarb plants start to produce flower stalks, it signals a shift of energy from stalk production to seed production. Remove flower stalks as soon as you see them to keep the plant focused on growing those delicious stalks.
8. Harvesting Too Aggressively
Even established plants can suffer from over-harvesting. Aim to leave at least one-third of the stalks on the plant to ensure it continues to photosynthesize and store energy for the next season. Over-harvesting can weaken the plant and reduce future yields.
9. Not Providing Enough Water
Rhubarb needs consistent moisture, especially during dry spells. Water deeply and regularly, ensuring the soil stays evenly moist but not waterlogged. A good rule of thumb is to provide about 1 inch of water per week.
10. Ignoring Pests and Diseases
Keep an eye out for common rhubarb pests like aphids and diseases such as crown rot and leaf spot. Regularly inspect your plants and take action at the first sign of trouble. Organic insecticidal soap can help control pests, while proper spacing and good air circulation can prevent fungal issues.
By avoiding these common mistakes, you’ll set your rhubarb plants up for success. With a little care and attention, you can look forward to a bumper harvest of delicious rhubarb to enjoy in your favorite recipes. Happy gardening!
