Rhubarb requires annual fertilizer applications for good growth and large yields. Apply fertilizer in early spring before growth starts. Broadcast 1⁄2 cup of an all-purpose garden fertilizer, such as 10-10-10, around each plant and work it lightly into the soil. Avoid getting fertilizer directly on the crown.

What is the best fertilizer for rhubarb?

For the highest yields of rhubarb stems, fertilize your plants three times per year. Apply 2 to 3 inches of composted manure, compost or ½ cup of an all-purpose garden fertilizer, such as 10-10-10, around each plant in early spring (now). Once growth starts to occur, apply fertilizer again.

Is Miracle Grow good for rhubarb?

If your soil is heavy clay, you may want to consider planting rhubarb in raised beds filled with soil designed especially for that kind of growing environment, such as Miracle-Gro® Performance Organics® Raised Bed Mix. Water newly planted crowns, and keep soil moist throughout the growing season.