I was wondering what type of fertilizer to use for rhubarb?
The Gardener’s Answer
Hello, Barbara: Rhubarb is considered a sun-loving, cool-season, hardy vegetable. Ideally, these plants should be grown in soil that is well-drained, fertile, and has a pH between 6.0-6.8. If you have not already had your soil tested, you may consider doing so. This way you can adjust the pH if needed. If you have not planted your rhubarb and are still in the planning stages, it is a good idea to work some compost/manure into the soil. If you are currently growing rhubarb in the garden, it will benefit from a side dressing of compost throughout the growing season. Otherwise, a well-balanced, slow-release fertilizer such as 10-10-10 should be applied each spring before new growth begins. As with any fertilizer, it is important to follow application rates as directed by each product. Rhubarb is a vegetable that should not be harvested the first year but it is well worth the wait.