Castor bean plant (Ricinus communis)
You have probably seen this exotic plant before, it is gorgeous with its large, boldly coloured leaves, but look out – it is the highly toxic Castor bean plant (Ricinus communis).
The genus name, Ricinus means “dog tick” in Latin, because that is what the seeds look like. Spanish Gardening Books selection
The Castor bean was originally native to northeastern Africa and the Middle East, but has gone wild and naturalized almost everywhere in the world that has a tropical or subtropical climate and is especially common in coastal areas.
Castor bean grows wild on rocky hillsides, waste lands, fallow fields, along road shoulders and at the edges of cultivated lands.
About Castor bean
Castor bean is a Euphorbia (Spurge) family member and like many Euphorbias it is poisonous, has highly caustic sap, and produces extremely allergenic pollen.
There are several cultivated varieties with strikingly different foliage colourations, including black-purplish, dark red-metallic, bronze-green, maroon, bright green with white veins, and just plain green.
In cold climates it is an annual, growing quickly, setting many seeds, and dying off in winter.
In mild winter areas, like ours, it is a long-lived perennial, sometimes reaching small tree size. Each plant produces hundreds of the bean-like seeds and these seeds can remain viable for more than a decade.
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Castor bean is very easy to grow – too easy, some might say.
They have a tendency to self sow and new seedlings can pop up all summer long.
This is one of the fastest growing plants in the world and becomes almost treelike in 3-4 months.
Castor bean plant spreads quickly because it has many built-in advantages over native plants.
A very robust grower, its leaves are poisonous even to predatory insects. Aphids that can safely feed on many other poisonous plants quickly die after sucking the juice of castor bean leaves.
But castor bean has one disadvantage. It is completely easy to recognize and can then be killed by chopping it down or spraying it with herbicides.
Ricinus communis castor bean plant
Ricinus communis Flower
In the landscape
Castor is an extraordinary plant right in style with today's foliage-centered gardens.
The huge leaves are as suited to a Victorian garden as they are to modern tropical inspired looks. And if you follow the old practice of snipping off the flower stalks before seeds form, the plants are nearly risk-free.
Most gardeners grow Castor bean plants in small groups as specimen plants to create a tropical look.
This is a large, coarse textured plant that grows very fast in a single season to fill in a big area or serve as temporary landscaping or quick screening. In frost free areas they are grown in large borders or allowed to naturalize in the back of the landscape.
In frosty climates, the Castor bean plant is the best way to create a quick tropical effect.
Many plants are poisonous to a degree, including many popular and commonly used landscaping plants. We can ban them from our own gardens, but will still encounter them in other gardens, parks, in the wild, etc.
The best thing you can do to protect your children or grandchildren from accidental poisoning is to teach them to never ingest any plant parts unless first approved by an adult.
If you like the exotic look of Castor bean plant, but want to avoid any poisonous plants in your garden, a safe alternative is “Fatsia japonica” (also known as false Castor bean plant). It looks almost similar, but is harmless.
RICINUS COMMUNIS SEEDS
Huge bright green shiny leaves adorn this lovely thick-trunked Cretian form of the "Castor Oil Plant".
This is the quite rarely offered true wild form bearing dazzling bright red flower buds and seed pods amongst large dark green leaves.
If grown in warm climates it will ultimately make a sturdy tree. Please note that these seeds are extremely poisonous if eaten.SUPPLIED AS A PACKET OF SEEDS
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