Rheum rhaponticum
TAXONOMY
FamilyPolygonaceae
GenusRheum
Zone3
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Plants of the World OnlineABOUT
Rheum rhaponticum, 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. Rhubarb is often used in culinary dishes, particularly desserts. The plant undergoes a dormancy period during the winter months.
ALSO KNOWN AS
Rhubarb
OVERVIEW
VPDCalculate
WaterWet
SoilLoamy
LightDirect Bright (6 Hours)
Temperature15° C
Humidity60%
GDD1,800
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Rhubarb requires moderate temperatures and should be planted in an area that receives direct bright light for optimal growth. It prefers soil that is kept evenly moist and thrives in environments with moderate humidity. Regular watering and occasional pruning are necessary to maintain healthy growth.Harvest
Rheum rhaponticum, commonly known as rhubarb, is typically ready for harvest in the spring, around April to June, when the stalks are 12-18 inches long and the leaves are fully developed. To harvest, grasp the stalk near the base and pull it away from the plant with a slight twisting motion. Avoid cutting the stalks, as this can leave a stub that may rot. Only harvest a few stalks at a time from each plant to ensure continued growth. Do not consume the leaves, as they contain oxalic acid, which is toxic.Soil
Rhubarb prefers loamy soil that is well-draining and rich in organic matter. The soil should be kept evenly moist but not waterlogged. A slightly acidic to neutral pH is ideal for this plant.Fertilizer
Rhubarb benefits from a balanced fertilizer with a nutrient composition of 10-10-10. Fertilize the plant in early spring and again in mid-summer to support its growth and development.Repotting
Rhubarb can be repotted if necessary, typically in early spring before new growth begins. Carefully dig up the plant, divide the root clumps if needed, and replant in fresh, well-draining soil.Propagation
Rhubarb is commonly propagated by division. This is best done in early spring or late fall. Dig up the plant, divide the root clumps into sections, and replant each section in a prepared bed.Pruning
Pruning is required to remove any dead or damaged leaves and to encourage new growth. This should be done in early spring before the plant begins its active growth phase.Toxicity
Rhubarb leaves are toxic to both pets and humans due to their high oxalic acid content. Only the stalks should be consumed, as they are safe and edible.Additional
Rhubarb plants can live for many years if properly cared for. Mulching around the base of the plant can help retain soil moisture and suppress weeds. It is also important to remove any flower stalks that appear to ensure the plant's energy is directed towards producing edible stalks.REVOLUTIONIZE YOUR PLANT CARE
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