Peperomia Ruby Cascade Care: Learn Tips On Growing Ruby Peperomia

Dark, rounded leaves on reddish stems that spill over the edge of the pot. That’s Peperomia ‘Ruby Cascade’ [pep-er-ROH-mee-uh], a trailing peperomia that some nurseries also label ruby peperomia.

It belongs to Peperomia, a genus with over 1,000 species. They are members of the black pepper family (Piperaceae), which is not the family that gives us bell and hot peppers. It’s the family that gives us the pepper spice.

The name tells the same story. Peperomia comes from the Greek word for pepper, peperi, and homoios, meaning resembling, and the name implies the plants are very similar and related to the black pepper plant, Piper nigrum.

Peperomias are native to tropical and subtropical areas of Central and South America, Africa, Southeast Asia and parts of Australia. In the wild they live in the forest understory, and many are epiphytes that grow on another plant for support. One of their common names, radiator plant, refers to their preference for warm conditions.

‘Ruby Cascade’ itself is a trade name, and its parentage isn’t documented by the extension services. So the care below follows what they say about peperomias as a group.

Peperomia Ruby Cascade Plant Care

Good news: peperomias are low-maintenance, easy-to-grow houseplants. Get the light and the watering right, and the rest takes care of itself.

Size and Growth

Ruby Cascade grows reddish, vine-like stems with small, rounded, fleshy leaves. It stays low in the pot while the stems trail over the edge of a pot or hanging basket.

Those fleshy leaves are typical of the genus. Many species are succulent and can store water in their fleshy leaves, and many peperomias have thick, fleshy leaves similar to succulents. Peperomias are also typically slow-growing.

Flowering

Don’t buy this one for flowers. Peperomia blooms are thin spikes, not round petals: small, greenish-white to brown flower spikes that appear in summer in the wild, and as a houseplant, peperomias typically will not flower. The spikes form when the plants are actively growing in spring and summer, are considered unattractive (they are said to look like a rat’s tail), and removing them lets the plant focus its energy on leaves.

Light

Bright, indirect light is the sweet spot. NC State Extension says peperomias prefer bright indirect light yet will tolerate low light conditions, and it warns that direct sunlight can scorch the leaves. Indirect light from an east or south-facing window works well, and peperomia can tolerate somewhat low light near a large north-facing window, but direct sun may scorch the leaves.

Peperomias should not be exposed to full sun, though species with thick, fleshy leaves need more light than thinner-leaved ones.

Temperature and Hardiness

Think warm. The University of Missouri advises keeping peperomias above 50°F. Protect them from cold drafts, too: keep yours away from drafty doors, cold windows and air-conditioning vents. For peperomias in general, the RHS gives a warm room of about 65 to 86°F (18 to 30°C) and says to keep them always above 50°F (10°C).

Outdoors, the genus is listed for USDA hardiness zones 10a to 12b. Elsewhere, treat Ruby Cascade as a houseplant that can summer outside. Plants can go outdoors for the summer once nights are consistently 60°F or higher, should sit in deep shade at first to acclimate, and then stay in a bright but shady spot with no direct sunlight.

Humidity

No need for a steamy bathroom. Peperomias can thrive in the humidity levels of most homes, but if the home is very dry, consider a humidifier. Peperomia will benefit from a humidifier in the winter.

Watering Ruby Cascade Peperomia

This is where most peperomias get into trouble. Clemson Extension says peperomia prefers to dry out between waterings, and that an overwatered plant will drop its leaves. It recommends watering, letting the pot drain, and only then setting it back in its saucer.

How dry is dry? The truly succulent peperomias should be left until the potting mix is almost completely dry, while less succulent types should be watered when the mix is dry a couple of inches down. Check with your finger. Ruby Cascade’s leaves are fleshy, so lean toward the drier side. Though its leaves look like a succulent’s, it isn’t a true succulent, so don’t leave it bone-dry for weeks.

Watch the leaves for warning signs. Root rot and yellowing or curling of the leaves indicate overwatering. A plant with yellow leaves can be saved by letting it dry out, if the yellowing is noticed soon enough.

To avoid leaf spots, keep water off the leaves when you water and provide good air circulation.

Feeding

Go light. Fertilize peperomia only when it is actively growing in spring and summer. A low-strength liquid fertilizer can be used occasionally during the growing season, or a slow-release granular fertilizer once per year. Follow the label for the amount, and skip feeding in fall and winter.

Soil and Repotting

Drainage comes first. Use a well-drained houseplant or cactus potting mix, or add perlite and/or orchid bark to a commercial potting mix so water drains quickly while enough moisture stays for the plant. Clay pots work better than plastic for peperomias because water escapes through the porous sides. Always use a pot with drainage holes.

Don’t rush to repot. Peperomias are slow-growing and will not need repotting often, and a peperomia can stay in the same pot for several years. When it’s time, choose a pot only slightly larger than the grower’s pot.

Grooming and Maintenance

Grooming is simple. Trim off old leaves when needed and, to make a plant look fuller, prune a stem above a leaf node so the plant will branch. If the trailing stems get longer than you like, trim them back and keep the healthy pieces for cuttings. Snip off any damaged or dead stems as you see them.

Tips On Propagating Peperomia Ruby Cascade

Peperomias can be propagated by leaf cuttings, stem cuttings or division, depending on the species. With a trailing plant like Ruby Cascade, stem cuttings are the easy route. Here are the steps:

• Cut a three-to-five-inch piece of stem from the parent plant.
• Remove the leaves on the lower third of the cutting.
• Dip the stem in rooting hormone, then insert it into potting soil or a rooting medium.
• Cover with clear plastic and keep it out of direct sunlight.

Keep the rooting mix lightly moist, not wet, and move the new plant into its own small pot once it is rooted. For complete details, check out this article: How To Propagate Peperomia.

Ruby Peperomia Pests and Diseases

Peperomias can pick up a handful of pests, so keep an eye out. Mealybugs, spider mites, fungus gnats, scale and whiteflies are the most frequently encountered pests of peperomia, along with aphids.

Mealybugs. Mealybugs show up as white, cottony masses on stems and leaves. For small infestations on houseplants, UC IPM says a solution of 70% (or less) isopropyl alcohol and water can be dabbed on them with a cotton swab, testing it on a small part of the plant first and watching for leaf burn. Not every extension service is comfortable with that: UF/IFAS Gardening Solutions lists alcohol as phytotoxic, meaning it can cause leaf burn, and says it should not be applied to plant tissues. On a plant with leaves this small, test first and stop at the first sign of damage. Insecticidal soaps, horticultural oils and neem oil applied directly to young mealybugs can also reduce their numbers.

If an infestation gets out of hand, one option is to start over from a clean, healthy stem cutting.

Root rot. Root rot is caused by overwatering and is the most common disease of peperomia. The fix is in the watering: let the plant dry out between waterings and empty the saucer.

Dropping leaves. An overwatered peperomia will drop its leaves, so check the soil first.

Is Peperomia Ruby Cascade Safe for Pets?

Peperomias have a good record here. Most peperomia are considered safe for pets. The ASPCA lists the baby rubber plant (Peperomia obtusifolia) as non-toxic to dogs and cats (its American rubber plant entry for the same species also lists horses), and red edge peperomia (Peperomia clusiifolia) as non-toxic to dogs, cats and horses. Its plant list has no entry for Ruby Cascade itself, so if your pet chews on it and seems unwell, call your veterinarian.

Suggested Peperomia Ruby Cascade Uses

Ruby peperomia doesn’t need much counter space, but its stems want room to trail. Some peperomia species are perfect for hanging baskets, and the genus is perfect for a desk or tabletop. Give Ruby Cascade a hanging basket, a high shelf or the edge of a desk where the stems can spill down, in bright, indirect light.

In summer, a hanging basket on a shaded patio or porch works too, as long as nights stay at 60°F or higher and the plant gets no direct sun.

Is a Ruby Cascade trailing off a shelf in your home? Tell us where yours lives!