How to grow potted peperomia obtusifolia well? Detailed care methods

Peperomia obtusifolia, also known as doubanlv, doubancai, doubanruyi and so on, is a herbaceous plant of the genus Peperomia in the family Piperaceae. It is commonly grown in white plastic pots or white porcelain pots and placed on coffee tables, decorative cabinets, curio shelves or office desks, or its branches are allowed to trail down and hang by indoor windows or in bathrooms. It has a certain purifying effect on formaldehyde, xylene, secondhand smoke and so on. Now let us take a look at how to grow potted peperomia obtusifolia well!

Growth habits of peperomia obtusifolia

Peperomia obtusifolia is native to the West Indies, Panama and northern South America, and was later introduced to China. It is now produced in Taiwan, China, Fujian, Guangdong, Guangxi, Guizhou, Yunnan, Sichuan, southern Gansu and southern Tibet, among other places. It likes a warm, humid, semi-shaded environment. The optimum growth temperature is around 25°C, and it must not go below 10°C. It is not tolerant of high temperatures, requires relatively high air humidity, and dislikes direct sunlight. It likes loose, fertile, well-drained, moist soil.

Propagation methods of peperomia obtusifolia

Peperomia obtusifolia is mostly propagated by cuttings and division. For cuttings, in April to May select healthy terminal branches about 5 cm long as cuttings, keep 1 to 2 leaves on the upper part, and after the cut surface has dried, insert them into a moist sand bed. Peperomia obtusifolia can also be propagated by leaf cuttings: use a knife to cut off a leaf with its petiole, let it dry slightly, then insert it obliquely into a sand bed, and it will root in 10 to 15 days. In greenhouses with temperature control equipment, this can be done all year round. Division is mainly used for propagating variegated-leaf varieties.

How to grow potted peperomia obtusifolia?

1. Soil: Peperomia obtusifolia likes to grow in loose, fertile, well-drained sandy soil rich in humus, and is not suitable for growing in clay. So the substrate is usually a mixture of leaf mold, river sand and a small amount of decomposed organic fertilizer. For a better substrate, a mix of peat soil and perlite can be used.

2. Watering: Peperomia obtusifolia prefers water and is not tolerant of drought. During the growing period it should be watered frequently. When the temperature is above 25°C or the air is dry, water a little more, but also prevent waterlogging. When the temperature is below 25°C, water thoroughly only when the surface of the potting soil is dry. When the temperature is below 10°C, it can tolerate several days of dryness without watering.

3. Humidity: Peperomia obtusifolia likes a humid growing environment. Under conditions of high humidity it grows lushly and its leaves are brightly colored. When the temperature is high or the air is dry, increase spraying on the leaf surface or sprinkle water in the growing environment to maintain relatively high air humidity, which is extremely beneficial to the plant's growth. It can also adapt to a short period of dry environment, but not for long; generally humidity should be kept at around 70%.

4. Temperature: Peperomia obtusifolia likes a warm environment. The optimum growth temperature is between 20 and 30°C. The overwintering temperature is best kept above 10°C. Below 10°C growth stops, and below 5°C it is prone to frost damage. Temperature changes directly affect leaf color. For variegated-leaf types, the suitable winter temperature is 18 to 20°C, while for green-leaf types it is around 15°C. It fears heat in midsummer, so it can be placed under a shade shed and sprayed with water to cool it down, but note that both excessive heat and excessive moisture can cause the stems and leaves to turn black and rot.

5. Light: Peperomia obtusifolia likes semi-shade or scattered light. Apart from needing sufficient light in winter, it needs a little shading in other seasons, especially in summer when shading is even more necessary. If placed in a shaded environment, it tends to grow leggy, the internodes lengthen, and its ornamental value decreases, so this is not advisable either. Under semi-shaded conditions, the leaf color is brighter and the gloss is better. Special variegated-leaf varieties have slightly higher sunlight requirements.

6. Fertilizing: When the temperature is above 18°C, peperomia obtusifolia needs a small amount of fertilizer. When the temperature is below 18°C or above 30°C, it is best to apply little or no fertilizer. Fertilizer is best applied in small amounts many times, and watering with diluted fertilizer solution instead of clear water is best. It is not tolerant of raw fertilizer or concentrated fertilizer, which can easily cause fertilizer damage. Fertilizer solution can also be sprayed on the leaves, with good results. The main fertilizers are nitrogen fertilizer and potassium fertilizer, with phosphorus fertilizer secondary.

7. Pruning: Peperomia obtusifolia has strong branching ability and grows quickly. Usually pay attention to pruning, cutting off branches that are too tall or too dense. This can both improve air circulation between branches and stems and maintain a beautiful plant shape. For newly propagated small seedlings, pinch off the growing tips when the seedlings are about 10 cm tall to increase the number of branches. For large plants, pruning is generally based on their growth condition.

Precautions for peperomia obtusifolia

1. Peperomia obtusifolia has relatively few pests and diseases. Generally, the diseases that appear are caused by improper care and an unsuitable environment, and it can gradually recover after adjustments. The main pest is red spider mite damage, but it can be prevented by maintaining relatively high air humidity. When it occurs, it can be controlled by wiping the leaves with a damp cloth or spraying a specific pesticide.

2. When growing peperomia obtusifolia in summer, air convection should be strengthened so that the heat inside the plant can be released. Place it in semi-shade, or give it 50% shading. At the same time, spray appropriately, 2 to 3 times a day.

3. When growing peperomia obtusifolia in winter, move it indoors to a bright place for care. Outdoors, it can be wrapped in plastic film to overwinter, but every two days at noon when the temperature is relatively high, the film should be opened to let it breathe.

4. Peperomia obtusifolia has high requirements for fertilizer and water, but it is most afraid of careless fertilizing, concentrated fertilizer and one-sided application of nitrogen, phosphorus or potassium fertilizer. It is required to follow the fertilizing (and watering) principle of "light fertilizer applied frequently, small amounts many times, complete nutrition."

5. Peperomia obtusifolia fears direct strong light and needs to be cared for in semi-shade, or given 70% shading. When cared for indoors, place it in as bright a place as possible, and every one or two months move it outdoors to semi-shade or shade for a month of care, so that it can accumulate nutrients and recover its growth vigor.