Rheum rhabarbarum
TAXONOMY
FamilyPolygonaceae
GenusRheum
Zone3
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Rheum rhabarbarum, commonly known as rhubarb, is a perennial plant in the family Polygonaceae. It is native to temperate regions and is known for its large, edible stalks. The plant goes dormant in winter and re-emerges in spring. Rhubarb is often used in culinary dishes, particularly desserts, but its leaves are toxic.
ALSO KNOWN AS
Rhubarb
Rhabarbarum verum
Rheum franzenbachii
Rheum franzenbachii var. mongolicum
Rheum undulalum
Rheum undulatum
Rheum undulatum var. longifolium
OVERVIEW
VPDCalculate
WaterWet
SoilLoamy
LightDirect Bright (6 Hours)
Temperature15° C
Humidity60%
GDD5,475
Dormancy4 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Rhubarb requires bright, direct sunlight for optimal growth and thrives in moderate temperatures. It prefers soil that is kept evenly moist and benefits from a humid environment. Regular watering and ensuring the soil does not dry out completely are essential for healthy growth.Harvest
Rheum rhabarbarum, commonly known as rhubarb, is typically harvested in the spring, starting in the second year after planting. Harvesting is done by pulling the stalks from the base rather than cutting them, which helps to prevent damage to the plant. Only the stalks are edible; the leaves contain oxalic acid and should be discarded. Harvesting should be done when the stalks are 12-18 inches long and at least 1 inch thick. It's important to leave some stalks on the plant to ensure continued growth and health.Soil
Rhubarb prefers well-draining loam soil with a slightly acidic to neutral pH. The soil should be rich in organic matter to support its nutrient needs. Good drainage is crucial to prevent root rot.Fertilizer
Rhubarb benefits from a balanced fertilizer with an N-P-K ratio of 10-10-10. Fertilize in early spring and again in mid-summer to support vigorous growth. Avoid over-fertilizing, as this can lead to excessive leaf growth at the expense of the stalks.Repotting
Rhubarb can be repotted or transplanted in early spring or fall. Choose a large container or a well-prepared garden bed. Ensure the crown is just above the soil surface and water thoroughly after planting.Propagation
Rhubarb is typically propagated by division. Divide the crowns in early spring or fall, ensuring each division has at least one strong bud. Plant the divisions in well-prepared soil and water thoroughly.Pruning
Pruning is necessary to remove flower stalks as they appear, which helps direct energy back to the edible stalks. Remove any dead or damaged leaves to maintain plant health.Toxicity
Rhubarb leaves contain oxalic acid and anthraquinone glycosides, which are toxic to both humans and pets. Ingestion can cause symptoms such as nausea, vomiting, and diarrhea. Only the stalks are safe to eat.Additional
Rhubarb is a hardy plant that can tolerate cold winters, making it suitable for temperate climates. Mulching around the base can help retain moisture and suppress weeds. Regular harvesting of the stalks encourages new growth.REVOLUTIONIZE YOUR PLANT CARE
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