How to grow and care for Radiator Plant (Peperomia caperata) Indoors

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Radiator Plant Care, Peperomia caperata Care

Botanical name: Peperomia caperata
Family: Piperaceae

Radiator Plant Description

Radiator Plant is a compact perennial houseplant that is easy to grow and adapts well to indoor growing conditions which bears small, heart-shaped, deeply ridged leaves.

The leaves in Radiator Plant are usually green but may have a blush of red and dark-green veins.

Radiator Plant is ideal for dish gardens, bottle gardens, terrarium and other situations where space is limited.

There exists numerous varieties of Peperomias; trailing, bushy and upright ones are available. The foliage may be fleshy, quilted, corrugated, smooth or hairy, green or variegated or even striped like a watermelon.

Radiator Plant Size

The Radiator Plant is slow growing and grows to a maximum height of 12 in. and the leaves are about 1 in. long.

Radiator Plant Flower

The flowers in Radiator Plant are rat-tail flower-heads made up of greeninsh flowers on an upright spike.

Radiator Plant Varieties

Many cultivars of Radiator Plant have been developed like Burgundy, Variegata, Emerald Ripple and Rosso among others.

Radiator Plant Origin

Radiator Plant (Peperomia caperata) is native to Brazil where it grows as an epiphyte on trees.

Radiator Plant for Sale

Buy beautiful and healthy Radiator Plants (Peperomia caperata) from Etsy.

Radiator Plant Care, Peperomia caperata Care

Photo Credit: Osera

Radiator Plant (Peperomia caperata) Care Indoors

Radiator Plant Light Requirements

Radiator Plant grows best in bright to semi-shade (partial shade). It will also thrive under flourescent light.

Too little light for your Radiator Plant will result in leggy plants and loss of leaf color.

Keep your Radiator Plant away from direct sunshine as it can lead to scorching of the leaves. Check out this guide on understanding light for houseplants.

How to Water Radiator Plant

Water Radiator Plant liberally during the growing season and allow the soil to slightly dry out between waterings.

Significantly reduce watering for your Radiator Plant during the cold season to keep the soil barely moist as growth is minimal at this time. Read more on how to water houseplants.

Ensure the pot for your Radiator Plant has a drainage hole to prevent the soil from getting soggy as it can lead in root-rot disease.


Temperature for Radiator Plant

Average warmth between 15-260C is ideal for Radiator Plant.

Protect your Radiator Plant from cold draughts as they can cause leaf drop. Read more on understanding temperature for houseplants.

Humidity for Radiator Plant

Radiator Plant thrives in a high humidity environment. Set pot on a wet pebble tray to raise humidity for your Radiator Plant. Read more on how to raise humidity for houseplants.

You can also grow your Radiator Plant in a terrarium as high humidity can be maintained. Read more on how to make a terrarium for houseplants.

Fertilizer (Feeding) for Radiator Plant

Feed Radiator Plant with a balanced water-soluble fertilizer every 4 weeks during the growing period.

Withhold feeding for your Radiator Plant during the cold season as growth is minimal and feeding at this time may lead to fertilizer burn. Read more on how to feed houseplants.

How to Repot Radiator Plant

Repot Radiator Plant during the growing season only when the plant has become pot-bound. Use a rich, free-draining soil and a pot one size larger.

Ensure the pot for your Radiator Plant has a drainage hole to prevent the soil from getting soggy as it can lead to root-rot disease.

How to Prune Radiator Plant

Pruning Radiator Plant involves regular removal of dead foliage to maintain the plant neat and tidy.

To encourage a bushy, compact growth for your Radiator Plant, regularly pinch off the growing tips.

As your Radiator Plant ages, it wil become straggly therefore, cut back the stems during the growing season to rejuvenate growth. Read more on how to prune houseplants.

Radiator Plant (Peperomia caperata) Propagation

Radiator Plant propagation can be done from seeds, leaf and stem-tip cuttings or by division.

How to propagate Radiator Plants from seeds

Sow Radiator Plant seeds at the beginning of the growing season in moist soil.

Place the set up in a warm shaded place and maintain the soil moist until the Radiator Plant seeds germinate.

Once germinated, move the set up to a cool shaded place and maintain the soil moist until the new Radiator Plants are well established.

How to propagate Radiator Plant from leaf cuttings in water

Radiator Plant leaf cuttings root easily, therefore there is no need for a rooting hormone.

Take leaf cuttings from a healthy Radiator Plant and ensure each leaf cutting has a petiole.

Allow sometime for the formation of a protective callus tissue over the cuts of your Radiator Plant leaf cuttings to prevent rotting.

Place the leaf Radiator Plant cuttings in a jar of clean plain water and change the water every 7-10 days.

Place in warm shaded place until growth begins at the base of the cuttings leaf petiole.

Allow enough time for substantial growth of the roots and new leaves.

Transfer the rooted Radiator Plant cuttings to individual pots and place in a cool shaded place.

Maintain the soil moist until the new Radiator Plants are well established.

For a fuller Radiator Plant, plant several plants in one pot.

How to propagate Radiator Plant from stem-tip cuttings

Radiator Plant stem-tip cuttings root easily, therefore, there is no need for a rooting hormone.

Take stem cuttings of about 4-5 in. length from a healthy Radiator Plant and ensure each cutting has at least 2 sets of leaves.

Insert the Radiator Plant cuttings in moist rooting soil and place in warm shaded place.

Maintain the soil moist until new growth emerges and substantial growth has been observed.

Transfer the rooted Radiator Plant stem cuttings to individual pots and begin routine care.

For a fuller Radiator Plant, plant several cuttings in one pot.

How to propagate Radiator Plant by division

Take out your Radiator Plant from its pot and divide it into several sections.

Pot these Radiator Plant sections in individual pots and place in a cool shaded place.

Maintain the soil moist until new growth emerges on your Radiator Plant sections.

Allow the new Radiator Plants to be well established before transplanting.

Radiator Plant Care, Peperomia caperata Care

Photo Credit: Plants Guru

Radiator Plant (Peperomia caperata) Problems Indoors

Radiator Plant brown leaf tips and edges

Brown leaf tips and edges in your Radiator Plant are due to sudden drop in temperature from cold draughts.

Remove all the damaged leaves and keep your Radiator Plant away from cold draughts and maintain average roo temperature.

Radiator Plant sudden loss of leaves

There are two possible causes of sudden loss of leaves in your Radiator Plant.

One possible cause of sudden loss of leaves in your Radiator Plant is temperature is too low.

Move your Radiator Plant to a warmer spot away from cold draughts and maintain an average room temperature.

The second possible cause of sudden loss of leaves in your Radiator Plant is the plant has been underwatered causing the foliage to wilt.

Water your Radiator Plant liberally during the growing season and allow the soil to dry out between waterings but reduce watering during the cold season.

Radiator Plant brown, shrivelled leaves

The cause of brown and shrivelled leaves in your Radiator Plant is too dry air. Radiator Plant prefers a humid environment.

Set the pot on a wet pebble tray to raise humidity for your Radiator Plant. read more on how to raise humidity for houseplants.

You can also grow your Radiator Plant in a terrarium as high humidity can be maintained. Read more on how to make a terrarium for houseplants.

Radiator Plant dry and shrivelled leaves

Excess soluble salts in the soil from the water or excess feeding will cause dry shrivelled leaves in your Radiator Plant.

Regularly flush out the salts from the soil for your Radiator Plant by running a stream of water through the soil until it comes out through the drainage holes and repeat the process several times.

Radiator Plant leggy stems

Leggy stems in your Radiator Plant are due to low light. Cut back the stems to rejuvenate growth and move your Radiator Plant to a brighter spot.

Radiator Plant wilted and discolored leaves and corky swellings under the leaves

Soggy soil for your Radiator Plant is the cause of wilted and discolored leaves and corky swellings under the leaves.

This is an indication of Root-rot disease. Isolate the affected Radiator Plant and treat it appropriately for the disease.

Radiator Plant Diseases

Common diseases in Radiator Plant are Leaf Spot Disease and Root-rot.

Isolate the affected Radiator Plant and treat it appropriately for the disease.

Radiator Plant Pests

Common pests in Radiator Plant are Spider Mites, Whiteflies and Mealy Bugs

Isolate the affected Radiator Plant and treat it appropriately for the pests.

Is Radiator Plant (Peperomia caperata) toxic?

Radiator Plant (Peperomia caperata) like other Peperomia Plants is non-toxic to humans and pets. The plants are safe to grow indoors.

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