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Caesar Weed

Urena lobata

Also known as Congo Jute, Bur-mallow, Common Urena

shrub☀️ full sun💧💧 moderate water❄ Hardy: Zone 10a – Zone 12b

Climate Match for your location

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Caesar weed is a fast-growing tropical shrub with lobed leaves and small pink to purple flowers. It is highly invasive in warm climates and typically managed as a weed rather than an ornamental plant.

Why grow it

Urena lobata produces fibrous stems historically valued for cordage and textile applications in tropical regions, offering potential for fiber production where conventional crops are unsuitable. The plant establishes quickly in degraded soils and can tolerate poor growing conditions that limit other productive species. Its small pink flowers provide nectar for pollinators during periods when other forage may be scarce.

Watch out for

In cultivation, seedlings can appear opportunistically from the seedbank for several seasons after the parent plant is removed, requiring persistent management rather than single interventions. The plant's rapid growth habit means it benefits from early and consistent pruning to maintain shape and prevent unwieldy size, particularly in protected greenhouse conditions where growth can be vigorous year-round.

Overview

Form
Upright
Growth Rate
fast
Size
2–6′ tall × 2–5′ wide
Dormancy
evergreen
Family
Malvaceae
Biomass and mulchFiberMedicinal

Native Range

Tropical Africa and Asia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SummerFall

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Companion Planting

Plants well with