Peperomia San Marino Care: How To Grow San Marino Peperomias

Peperomia San Marino is a hybrid along with 1000+ different types of Peperomia, species, cultivars and hybrids all hailing from Central and South America, tropical Asia and Africa. 

The plants’ genus name refers to the fact that these plants are members of the true pepper (Piperaceae a or piper) family of plants. Most Peperomia are epiphytes, similar to bromeliads, orchids and some types of ferns.

Attractive foliage of San Marino
Attractive foliage with blooms of Peperomia San Marino | image Gabriella Plants

Peperomia San Marino (pep-er-ROH-mee-uh SAN Muh-ree-no) is a new cultivar of Peperomia sporting attractive gray green leaves with green veins on the upper surfaces along with red peduncles (the stalk which bears the flower or fruit).

Obed Jacob Smit of Sappemeer in the Netherlands developed the cultivar in 2013. It was patented by Eden Collections BV in 2016 (patent application # 15/330454).

Peperomia San Marino is a hybrid developed by crossing a cultivar of Peperomia marmorata and a Peperomia peruviana cultivar. Smit collected and planted the resulting seeds and selected the San Marino cultivar in 2014.

Later in that same year, he was able to propagate the plant through cuttings.

It is commonly referred to simply as San Marino. It is such a new cultivar there are few videos devoted specifically to its care; however, Peperomia care can be fairly well generalized across all species. 

Peperomia San Marino Care Tips

Size & Growth

Peperomia San Marino has a flattened, globe shaped growth habit. Plants grow to be approximately 8” inches tall and about 12” inches wide and a slow growth rate.

Peperomia San Marino looks similar to Peperomia Eden Rosso, but smaller and the foliage is a lighter green. The green grayish leaves of the plant display green veins on the upper surfaces. The leaves grow in a rosette shape with red stems.

Flowering & Fragrance

Like other Peperomia, San Marino produces unscented axillary spikes with many tiny flower blossoms along the length. The flowers do not have any petals and are not really visible to the unaided eye. 

The spikes of the radiator plant are interesting, but some plant owners prefer to remove them.

Light & Temperature

For the most part, Peperomia of all sorts like lots of bright indirect light and limited direct sunlight. A variegated type, such as San Marino benefits from a couple of hours of mild, direct sunlight daily. 

Protect against harsh, bright direct sunlight. These plants do best in east or west facing windows.

Peperomia San Marino is happiest with temperatures ranging from 65° to 75° degrees Fahrenheit. Don’t allow the temperature to drop below 50° degrees Fahrenheit.

Watering & Feeding

Take care not to overwater as this can cause root rot. Wait until the top couple of inches of soil are completely dry and then water thoroughly. Do not allow the plant to stand in water.

As a tropical plant, Peperomia San Marino does well in a humid environment in bright indirect light. You can mist the leaves daily during the growing season. Set the plant on a pebble tray with a little water to increase the ambient humidity or add a humidifier.

In the springtime, use a diluted mixture of liquid fertilizer twice a month. In the summertime, reduce this to a monthly application. Do not feed the plant during the fall and winter.

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Potting Soil & Transplanting

The most important features of a good substrate (potting mix) for Peperomia are good aeration and excellent drainage.

Well draining substrate is essential, and because these plants are epiphytes, a soilless mixture is a good idea. A combination of two parts peat moss or coco coir and one part sand or perlite works well. 

Peperomia San Marino does not need to be repotted frequently, like other Peperomia plants it has a very small root system. Annual repotting should be more than adequate. 

When repotting, remove the plant from its pot, clean the roots and the pot and then simply replace with clean substrate, or move up the plant to the next size pot. 

Peperomia likes being slightly root bound avoid using a large pot or over potting. 

Grooming & Maintenance

To help your plant maintain a dense, bushy appearance, pinch off top stems and any that become leggy or spindly. Be sure to remove any dead or damaged leaves and stems as well.

How To Propagate Peperomia San Marino

Like all Peperomia, San Marino can be propagated easily using stem or leaf cuttings. Obed Jacob Smit found that cuttings from this plant initiate roots within ten days during the summer months in bright indirect light and within two weeks in winter.

He further found that it takes eighty days for a rooted cutting to grow into an independent plant during the summer, and one hundred days during the winter.

Peperomia San Marino Pests or Diseases

Most problems with a Peperomia plant stem from overwatering. As long as you use the right substrate, provide good air circulation and water correctly, you should not encounter any problems.

Mealybugs may attack weakened plants. Remove mealybugs by wiping them off with a damp cloth. Alternately, remove them with a cotton ball or swab dipped in rubbing alcohol.

Tips On Controlling Mealybugs on Plants

NOTE: Leaf drop can be a sign of insufficient light or pests infestation.

Is San Marino Considered Toxic or Poisonous?

Peperomia are completely non-toxic, but it’s still a good idea to keep them out of the reach of curious pets and kids, who may damage the plant!

Is San Marino Considered Invasive?

This slow-growing hybrid houseplant is not invasive.

Suggested Peperomia San Marino Uses

Peperomia is often described as a baby rubber plant. In general, they are good choices for dish gardens, shallow planters, pots and hanging baskets. San Marino is a very compact plant and does especially well in large terrariums with bright indirect light.

Where To Buy San Marino?

Purchase Peperomia San Marino plants online at Gabriella Plants.

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