World's largest flower (Rafflesia arnoldii)
Also known as: Stinking corpse lily
The Rafflesia arnoldii holds the title of the world's largest flower, found predominantly in the rainforests of Indonesia, especially on Sumatra and Borneo. This extraordinary flower can reach up to 3 feet (approximately 91 cm) in diameter and weigh as much as 24 pounds (11 kilograms). One of its most distinctive features is the foul odor it emits, resembling that of decaying flesh, which serves to attract carrion flies for pollination. Unfortunately, this remarkable plant is now endangered due to habitat destruction and excessive harvesting.
In This Article
Attributes of World's largest flower
Lifespan
Annual
Plant Type
Herb
Plant Height
2 m to 3.5 m
Spread
Typically between 6 to 12 inches (15 to 30 cm), flower can reach 3 feet (1 meter) in diameter
Leaf Color
No leaves; plant consists mostly of a single flower
Flower Size
30 cm to 1 m
Flower Color
Red Brown
Quickly Identify World's largest flower
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Rafflesia arnoldii can be identified by its massive size, fleshy petals, and its characteristic putrid smell. The flower can reach over three feet in diameter and typically has five large, lobed petals that are reddish-brown with white speckles.
Scientific Classification of World's largest flower
Phylum
Vascular plants
Class
Dicotyledons
Order
Nances, spurges, willows and allies
Family
Rafflesias
Genus
Rafflesia flowers
Species
World's largest flower
Planting and Growing of World's largest flower
Care Difficulty
Hard
Watering Schedule
Every day
Sunlight Requirements
Full shade
Sunshine Duration
6-12 hours
Ideal Temperature
77-86℉
Soil Type
Potting Mix, Peat Mix
Soil pH
6.5-7.5
Fertilizer Type
Balanced
Pruning Season
Spring, Summer
Pruning Area
Branches, Leaves
Pruning Frequency
2 times a year
Repotting Season
Spring
Pot Type
Plastic, Ceramic
How to Water World's largest flower?
Rafflesia arnoldii requires careful hydration management. This plant absorbs nutrients and moisture mostly from its host plant, so direct watering is rare. When necessary, water in increments of 500ml, ensuring the surrounding soil maintains a slight dampness, mimicking its natural rainforest environment without being saturated.
What are the symptoms of an underwatered World's largest flower?
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What should I do if my World's largest flower is not getting enough water?
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What are the symptoms of an overwatered World's largest flower?
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How to save an overwatered World's largest flower?
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What Are the Sunlight Requirements for World's largest flower?
Rafflesia arnoldii thrives best in partial sun to full shade environments. Ideally, providing a gentle dappled light or a few hours of morning sun can support its growth, simulating the undergrowth light levels of a tropical forest.
What is the ideal lighting setup to grow Rafflesia arnoldii indoors?
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How can I ensure the plant receives optimal indirect light?
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Why is this lighting setup beneficial for Rafflesia arnoldii?
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What Is the Ideal Temperature Range for World's largest flower?
Rafflesia arnoldii thrives best in a temperature range of 77 to 86°F. This range simulates the conditions found in its natural tropical rainforest habitat, promoting optimal growth and flowering. Maintaining temperatures within this range ensures the plant's metabolism and enzymatic activities function effectively, supporting healthy development.
What Soil is Best for World's largest flower?
Rafflesia arnoldii requires well-draining soil to prevent waterlogging, which can be detrimental to its roots. Ensuring good drainage improves aeration and promotes healthier root systems. The presence of organic material is crucial for Rafflesia arnoldii, as it mimics the forest floor where it naturally thrives. Rich organics provide necessary nutrients and mimic natural decomposing matter. Although it requires well-draining soil, Rafflesia arnoldii benefits from soils that retain some moisture, mimicking humid forest conditions, which prevent dehydration and support its growth needs.
How to Fertilize World's largest flower?
Rafflesia arnoldii is an extremely unique plant that doesn't follow conventional fertilization guidelines. This plant is parasitic on Tetrastigma vines and receives its nutrients by tapping into the host plant's xylem and phloem systems. Therefore, additional fertilization is generally not required for the Rafflesia itself, making special fertilization protocols unnecessary.
How to Prune World's largest flower?
When working around a Rafflesia arnoldii, be extremely cautious not to disturb the flower buds or the main flower body. These structures are delicate and can be easily damaged, severely affecting the plant's reproductive success and reducing its lifespan. Focus on clearing the surrounding area instead of handling the Rafflesia itself.
More About Pruning Techniques→
How to Propagate World's largest flower plant?
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Begin by selecting mature, viable Rafflesia arnoldii seeds, which can be identified by their dark, slightly glossy appearance. Ensure that the seeds are collected from a pod that has naturally fallen to the forest floor to increase germination chances.
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Prepare a growing medium using a mixture of coarse sand and coconut coir to ensure good drainage and adequate moisture retention. Maintaining a pH level slightly acidic and rich in organic matter mimics the natural forest floor conditions, promoting healthy seedling growth.
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Gently place the seeds in the prepared substrate, ensuring they are partially covered. Keep the growing trays in a location with high humidity and temperature to resemble the rainforest environment, essential for the seeds to begin germinating.
How to Repot World's largest flower plant?
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Rafflesia arnoldii requires repotting when you notice roots growing through the drainage holes, indicating the plant has outgrown its current pot. Additionally, do this during active growing seasons for best results.
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Select a pot that is slightly larger than the previous one. Ensure it has ample drainage holes, promoting healthy root growth while preventing waterlogging, which can lead to root rot.
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Opt for a well-draining, organic-rich soil mix. This soil type ensures adequate moisture retention while facilitating proper aeration for the roots, crucial for Rafflesia's health.
Learn More About World's largest flower Diseases
Anthracnose
Bacterial Leaf Spot
Bacterial Soft Rot
Bacterial Wilt
Chemical Injury
Crown Gall
Damping-off
Drought Stress
Fusarium Wilt
Gray Mold
Leaf Spot
Nutrient Deficiency
Nutrient Toxicity
Powdery Mildew
Root Rot
Root-knot Nematode
Sooty Mold
Spider Mites
Temperature Stress
Thrips Damage
White Mold
