Quest for Rhubarb

Rhubarb

Try potted plants from Gade Farms in the spring 2024

Rule of Thumb

First year- let it grow, don't harvest

Second year- harvest any broomstick sized stalks until Father's Day, let the rest grow

Third year on- harvest broomstick sized stalks until August 1

Let it die back on its own in winter, don't cut back

Four plants are good for one family.

• In spring, plant crowns when the soil is workable, when the roots are still dormant, and before growth begins (or as plants are just beginning to leaf out). If you have a temperature gauge, soil temperature should be 50°F minimum.
• Dig large, bushel-basket-size holes.
• Space rhubarb plants about 2 to 4 feet apart and 3 to 4 feet between rows.
• Plant crowns so the eyes are about 2 inches below the soil surface with buds facing up.
• Water well at the time of planting.

Overcrowding is a common problem with rhubarb and can lead to subpar growth. Dig and split rhubarb roots every 3 to 4 years. Divide when plants are dormant in early spring (or late fall). Divisions should have at least one large bud on them. 

• Mulch generously with a heavy layer of straw to retain moisture and discourage weeds.

• Water your plant well and consistently. Rhubarb needs sufficient moisture, especially during the hot, dry summer days. 

• Remove seed stalks as soon as they appear, as they will only drain energy from the plant that could be used to produce stalks or roots.

• Each spring, apply a light sprinkling of a fertilizer (10-10-10) when the ground is thawing or has just thawed. 

• In the fall, remove all plant debris. Once your ground freezes, it’s best to cover rhubarb with 2 to 4 inches of organic mulch, preferably well-rotted compost. By adding nitrogen to the soil, you’re preparing the rhubarb plants for a good spring season.

Forcing Rhubarb

In early spring, when a few leaves have just started to emerge from the ground, cover the plant with a large pot. You can even look for special rhubarb forcers: large, terra cotta, bell-shaped containers specially made for the task. Block any holes or gaps in the pot so that no light can get in, and place a layer of straw around the outside of the pot to insulate it. Allow the plant to grow in darkness for about eight weeks before harvesting. After harvesting, the forced plants should be given a season or two to recover before forcing again.