Rheum undulatum

Curly Rhubarb

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Ornamental perennial noted for large, wavy emerald leaves with striking red veins. Primarily cultivated as a foliage plant in gardens or greenhouses.
yard Kitchen garden plants wb_sunny Half-shade pets Not pet-safe
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Plant Details

Common Name Curly Rhubarb
Family Polygonaceae
Genus Rheum
Species Undulatum
Origin China
Blooming Small greenish-white flowers on tall stalks in late summer.
Leaf Color Emerald green with crimson veins, wavy texture
Sunlight Half-shade
Category Kitchen garden plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Rich, loamy soil with high organic matter and good drainage.

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Watering

High water demand during growth; keep soil consistently moist. Reduce in dormancy.

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Sunlight & Care

Prefers full sun to partial shade; requires ample light for large leaf development.

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Fertilization

Apply balanced liquid fertilizer every 2 weeks during active growing season (May-Sept).

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Pruning

Remove dead foliage and flower stalks after blooming to maintain appearance.

Pest Control Aphid Slug Snail Spider Mite

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
50° – 82°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 85%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
800 – 12000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1000 – 3000
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
30% – 75%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1600
mS/cm
Electrical conductivity (nutrient concentration in soil water)
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Common Problems

Something wrong with your Rheum undulatum? Select a symptom to diagnose and fix the issue.

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