How to Grow a Rubber Plant Tree

Updated on May 29, 2018
rubber tree seeds
rubber tree seeds | Source

If you are lucky enough to obtain some seeds from the ficus elastica plant, you may wish to try to grow a rubber tree from them.

Most people don't even know a rubber plant produces flowers, never mind seed. Ficus elastica is part of the family Moracaea, which include figs and mulberries.

Like most people, I have grown rubber plants as houseplants all my life, and now that I am living in a Mediterranean climate, I have one growing in the garden.

It has never flowered. In fact, I have never seen a flower on a rubber plant.

I've planted some of the seeds. Although they are quite large, I read that it is recommended they are planted on the surface of the soil, and kept in a warm place out of the sunshine until they germinate. I have placed mine inside a cut down plastic bottle with drainage holes on the bottom (to create a mini-greenhouse) outside in a sheltered part of the terrace.

This winter has been particularly cold. Whether they have survived remains to be seen.


fig wasp
fig wasp

The fig wasp pollinates rubber plant flowers

Ficus elastica flowers need a special kind of wasp, an agaonid wasp known as the fig wasp to pollinate them. This wasp is not present everywhere, so if your indoor rubber plant produces flowers, it may have trouble getting pollinated to produce fruit.

The fruit is fig-like, small and green. The flowers have been described as insignificant as the plant does not need to attract pollinators.

It seems a bit of a strange set up to me, as the fig wasps lays its eggs in the flower which in turn means that they hatch inside the fig, yet seemingly this is the only way this plant can reproduce seed. It is a two-way interdependence, as the fig wasp associated with the ficus elastica, cannot lay its eggs elsewhere.

Each to their own, I suppose!

ficus elastica - the rubber plant
ficus elastica - the rubber plant | Source

The Rubber Plant

This is a stunning exotic looking houseplant, with its wide glossy eliptical leaves that can grow as large as 14" x 7", especially on younger plants.

It is non-deciduous and so does not lose its leaves in the winter. New leaves are covered with a red capsule which falls off as they unravel.

In USDA zones 9b to 11 they can be grown outside, where they form trees up to 100' high with wide-spreading branches and aerial roots dropping from the main stem and branches. They have buttress roots, which are stabilising roots that many trees have developed when living in poor and rocky soil where they can't penetrate the ground deeply. These roots snake out from the tree in all directions and intertwine with the roots of neighbouring trees to form a stable network for the whole forest.

Like typical rainforest jungle trees, they can tolerate sun or shade, and are not bothered about acidity/alkilinty of the soil or type of soil. They especially like living in tropical climates where it is warm and wet, but tolerate drought extremely well.

Indoors, they can grow as high as your ceiling, and can be safely cut back if they threaten to outgrow your house.

The sap is milky white and can be used to make rubber, although commercially the sap of the the para rubber tree is preferred, a different species.

Care should be taken when handling the sap, as it is an irritant and can be fatal if ingested.

Propagation

They can be propagated by either cuttings or air-layering. The latter is where the stem is cut with a knife (while still attached to the parent), then wrapped in sphagnum moss and sealed inside polythene binding until new roots develop.

Cuttings can be taken and placed in a compost/vermiculite mix in a pot inside a plastic bag, well -watered then ignored until you see a new leaf forming.

It is well worth propagating your rubber plants and spreading them throughout the house, as they are on NASA's list of the air-purifying houseplants.

Questions & Answers

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      • profile image

        Lee77 

        2 years ago

        The seeds pictured above are not infact ficus elastica seeds but the tree that is farmed for its natural rubber 'Hevea brasiliensis' (also known as the rubber tree).

        Ficus elastica seeds like all ficus seeds are tiny almost eucalyptus like seeds. If you obtain seeds that look like the ones pictured in this article you will absolutely NOT grow the rubber plant pictured (Ficus elastica). Sorry to ruin the party!

      • IzzyM profile imageAUTHOR

        IzzyM 

        3 years ago from UK

        Try taking a cutting that includes an ariel root. Always works for me.

      • profile image

        Carl bothamley 

        3 years ago

        I've now tried 5 different ways to grow a plant from cuttings but have failed every time!

      • profile image

        humphrey 

        5 years ago

        i love rubber work

      • IzzyM profile imageAUTHOR

        IzzyM 

        6 years ago from UK

        I think you would be better off taking cuttings from existing plants. No-one grows them from seed expert for experimenting.

      • profile image

        Simeon 

        6 years ago

        I am interest in beginning a rubber garden at my village since I have over 10 acres of land. My problem is where can I get rubber seeds for nursery.

        Please I need your help in this regard

        You can reach me on my e-mail: simkam2001@yahoo.com

        Thanks

      • Sage Williams profile image

        Sage Williams 

        8 years ago

        Hi Izzy - Once again a very interesting, well written hub. I learned so much. To be honest, I really suck at growing house plants, but love plants of all kinds.

        The rubber plant is a very beautiful plant.

        Sage

      • profile image

        Keira7 

        8 years ago

        Hi my dear IzzyM, all your hubs are very intersting and full of very good info. Thank you for sharing. I have learn a lot with all your work and did rate up all your others hubs. Brilliant.:)Bless you.

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