Rhubarb is a popular vegetable, often used in pies and tarts, that grows in the early spring and summer months. It's known for its tart flavor and crunchy texture. However, rhubarb is a perennial plant that requires proper care to maintain its health and productivity. One important aspect of rhubarb care is knowing when to stop picking the stalks. Picking rhubarb at the right time is crucial to ensure the plant has enough energy to grow and thrive for the next season.
Understanding Rhubarb Growth
Rhubarb plants grow from crowns, which are underground stems that produce new growth every year. The crowns store energy during the winter months, and as the weather warms up, they start producing new stalks. The stalks grow rapidly, and it’s essential to harvest them at the right time to avoid depleting the plant’s energy reserves. Over-harvesting can weaken the plant, making it more susceptible to disease and pests. On the other hand, under-harvesting can lead to the plant becoming leggy and producing fewer stalks.
Signs to Stop Picking Rhubarb
There are several signs to look out for to determine when to stop picking rhubarb. One of the most obvious signs is when the stalks start to become thinner and more fragile. This is an indication that the plant is starting to exhaust its energy reserves. Another sign is when the leaves start to turn yellow or become scorched, which can be a sign of nutrient deficiency or drought stress. It’s also important to stop picking rhubarb when the plant starts to produce seed stalks, as this can divert energy away from the crowns.
| Month | Average Harvest Period |
|---|---|
| April | 4-6 weeks |
| May | 6-8 weeks |
| June | 4-6 weeks |
Post-Harvest Care
After stopping the harvest, it’s crucial to provide the rhubarb plant with proper care to ensure its continued health and productivity. This includes watering regularly, fertilizing with a balanced fertilizer, and mulching to retain moisture and suppress weeds. It’s also essential to remove any seed stalks that may form, as these can divert energy away from the crowns.
Common Mistakes to Avoid
One common mistake to avoid is over-harvesting the rhubarb plant, which can weaken it and make it more susceptible to disease and pests. Another mistake is not providing enough water, which can lead to drought stress and reduced productivity. It’s also important to avoid using high-nitrogen fertilizers, as these can promote leaf growth at the expense of crown development.
How often should I water my rhubarb plant?
+Rhubarb plants require about 1-2 inches of water per week, either from rainfall or irrigation. It’s essential to keep the soil consistently moist, but not waterlogged.
Can I grow rhubarb in containers?
+Yes, rhubarb can be grown in containers, but it requires a large pot with good drainage and a well-draining potting mix. The container should be at least 12-18 inches deep to accommodate the crowns.
How do I divide and replant my rhubarb crowns?
+Rhubarb crowns can be divided and replanted every 5-10 years to maintain their productivity. Dig up the crowns in the fall or early spring, and divide them into sections with at least one growing point each. Replant the sections immediately, making sure the growing point is level with the soil surface.
