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Caesarweed
Also known as: Congo Jute
Caesarweed, which originated in tropical Asia, is now considered an invasive weed, but was once an important crop. This member of the mallow family can reduce soil erosion, but it can also overtake fields and destroy native species. If caesarweed overtakes pastures and forage, livestock will not eat it. This plant's seeds can be inadvertently picked up and distributed just by driving through the field.
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Perennial
Lifespan
Shrub
Plant Type
Summer, Early fall
Bloom Time
Spring, Summer, Fall, Early winter
Harvest Time
Pink
Flower Color
Deciduous
Leaf type
20 - 38 ℃
Ideal Temperature

Images of Caesarweed

Distribution of Caesarweed

Distribution Map
Caesarweed has a widespread presence primarily across various tropical and subtropical regions. This species is indigenous to parts of Asia, Africa, South America, and Central America, flourishing in a range of climates within these major areas. It has also established itself in certain Pacific and Caribbean islands, as well as in parts of South America, where its presence is sometimes thought to be invasive. In these ecosystems, caesarweed may have an impact, due to its vigorous growth and adaptability.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Forests, Pastures, Waste ground, Swamps, Riparian, Coastal dunes, Roadsides
Hemisphere Trend Curve

Weed Control

Caesarweed originates from the tropical regions of Asia, Africa, and the Americas. Often considered a weed, it is notorious for its high levels of adaptability and reproductive ability which enables it to spread swiftly, infesting lawns and gardens. One plant can produce about 4500 seeds annually, effectively contributing to its invasiveness. Its harmfulness stems from its robust nature and ability to outcompete native plant species, thereby disturbing the balance of the ecosystem. Dense clusters of caesarweed can form a thick mat, inhibiting the growth of other plants and affecting the overall aesthetics of gardens. The plant primarily spreads through its seeds, which are dispersed by wind, water, and human activity, often attaching to clothing or animal fur, ensuring widespread distribution.
How to Control It
The best season for removal of Urena lobata, or caesarweed as commonly known, is during the early stages of spring, before it reaches the state of flowering. It should be done to prevent the spread of seeds and further proliferation of this invasive species. Here are some methods of controlling or removing caesarweed:
  1. Manual Pulling: Wear protective gloves and manually pull the plant from the ground, ensure to get the roots as well. Do it on a day after some rainfall, when the soil is loose and moist, for more comfortable removal.
  2. Mulching: After removal, cover the ground with a thick layer of mulch to prevent light from reaching any buried caesarweed seeds, inhibiting their growth.
  3. Solarization: This method uses the sun's heat to kill caesarweed. First, you must remove the above-ground parts of the plant. Wet the area then cover it with a clear plastic tarp during the hottest part of the year. Leave it for 6-8 weeks; the heat accumulated under the plastic will cook and kill caesarweed seeds in the top layer of the soil.
  4. Biological Control: Certain insects like the 'Urena Lobata weevil' favor caesarweed and can help control its population. Care must be taken not to introduce new pests in the process.
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Care Guide for Caesarweed

Every 1-2 weeks
Water
Full sun
Sunlight
20 - 38 ℃
Ideal Temperature
Garden Soil
Soil Type
Water: Originating from tropical regions, caesarweed prefers high humidity and consistent moisture. Water caesarweed every 1-2 weeks to avoid over-saturation. Thriving in warm climates, it benefits from rainwater during the growing season, making it suited for outdoor environments.
Fertilize: For caesarweed, use a high-nitrogen fertilizer bi-weekly during the growing season at quarter strength. Water caesarweed before and after application to aid nutrient absorption and reduce root shock. Less fertilizer is needed in dormant periods, and avoid foliage contact to prevent burn.
Propagation: Caesarweed is a vigorous, fast-growing perennial from the Malvaceae family, easily propagated by sowing. Use well-drained, fertile soil and keep adequate moisture for successful germination. Light scarification of seeds enhances water uptake, while careful initial care promotes healthy establishment and growth.
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