Rhubarb plants require regular fertilization to promote healthy growth and abundant harvest. Here are some tips on how to fertilize a rhubarb plant: 1. Timing: Fertilize rhubarb plants in the early spring before the plant begins to develop foliage. 2. Type of Fertilizer: Use a balanced fertilizer, such as 10-10-10 or 12-12-12. 3. Quantity: Apply 1 pound of fertilizer per 100 square feet of growing area. 4. Method of Application: Sprinkle the fertilizer evenly around the plant, keeping it at least 6 inches away from the base of the stem. Water the plant well after fertilizing to help the nutrients penetrate the soil. 5. Frequency: Fertilize rhubarb plants every year. 6. Avoid Overfertilizing: Overfertilizing can damage the plants and lead to a poor harvest. Be careful not to apply too much fertilizer, and always follow the instructions on the label. By following these guidelines, you can ensure your rhubarb plants receive the proper nutrients to grow healthy and strong, and produce a bountiful harvest of delicious stalks.