A rhubarbplant can produce stalks for up to 20 years, but usually needs to be divided after 5-6 years. Expect to get about 2 to 3 pounds (0.91 to 1.36 kg) of stalks from a mature plant each season. Step 2 Harvestrhubarb from May to June in the northern hemisphere. RhubarbSeedling Care. Water the seedlings when the soil gets dry on top.Harvest by pulling and twisting the stalk off at the base. Do not cut rhubarb which can damage the crown. Remove leaves which are toxic. When to PlantRhubarbSeeds by Zone. Hey, I enjoyed a splendid show of flowers though and now have a rhubarbseed collection for planting more rhubarb next year! So, if you’re feeling rebellious, read on to learn more about how to collect rhubarbseeds and when to harvestseeds from rhubarb! Rhubarb grown from nursery starts can be harvested in its second year, one year after you plant it in your garden. However, if you’re growing rhubarb from seed, wait until plants are at least three years old to start harvesting. As soon as the rhubarb sends up seed stalks, cut them immediately. And as far as harvesting in the second year goes, sample just a few stalks from each plant so you know what sort of goodness you are getting into. Learn how to grow rhubarb, a low-maintenance perennial that thrives for 10+ years. Discover when to plant, how to care for, and tips for harvesting this tart, versatile vegetable! Get expert RHS advice on growing rhubarb – choosing, planting, growing, harvesting and tackling problems. When to HarvestRhubarb. There are many ways to plant: from seed, crown, bare root, or division.Crowns are potted plants that are at least a year old. Harvest lightly in the second season after planting, and regularly in the third. Sowing Seeds: The Slowest Way. Appearance and characteristics of rhubarb. Rhubarb is a perennial plant. That means, unlike most other vegetables, you don’t need to replant it each year. It forms a tall clumping plant with long stalks and large broad leaves. Remove seed stalks.Rhubarb is ready to harvest when stalks reach 12–18 inches. To harvest, pull or cut the stalk away from the base of the plant with a slight twist. Leave a few stalks on each plant to extend the harvest potential into the next year. Plant or divide rhubarb roots in early spring while the plants are dormant. Plantingseeds directly in the garden is not recommended except in extreme southern areas of the United States. Rhubarb can be grown from seed, but it will add another year or two to getting a full harvest. Rhubarb should be planted in full sun in well-drained soil with high organic matter content. The intake of nutrients in rhubarb is high, so fertilizer should be supplemented each year in early spring and after harvest in late June. Where to plantrhubarb. Rhubarb needs an open, sunny or partially shaded site, and rich, moist soil. It will grow well in a sunny, open site, on a wide range of soils, as long as it has been well-prepared with plenty of manure or compost. HarvestRhubarb From Early Spring To Mid-July. Rhubarb is a cool-season plant and its growth and quality tapers off during the heat of the summer.A rhubarbplant grown from seed might take 2 to 3 years before it is established enough to harvest.
