Monstera obliqua, often called Monkey Mask, is a delicate aroid prized for its extremely perforated, lace-like leaves.

Light

• Bright, indirect light is best. Avoid direct sun, which can scorch the thin leaves.

• Too little light slows growth and reduces leaf development; too much light causes bleaching or brown edges.

• East- or north-facing windows or a few feet back from a south- or west-facing window work well. Diffuse light with sheer curtains if necessary.

Temperature

• Keep between 65–80°F (18–27°C).

• Avoid temperatures below 55°F (13°C).

• Protect from cold drafts and sudden temperature swings.

Humidity

• High humidity (60–85%) is ideal. The thin foliage is highly susceptible to low-humidity damage.

• Use a humidifier, pebble tray with water, or consistently group plants to raise local humidity.

• Bathrooms and kitchens can work if they have sufficient light.

Watering

• Water when the top 1–2 inches (2.5–5 cm) of the potting mix are dry. Frequency depends on potting mix, pot size, humidity and temperature.

• Use room-temperature, filtered or rainwater if your tap water is hard or high in chlorine. Chlorinated or saline water can cause leaf tips to brown.

• Avoid overwatering and waterlogged soil — Monstera obliqua is prone to root rot. Ensure good drainage and never leave the plant sitting in standing water.

Soil and potting mix

• Use a well-draining, airy aroid mix: a blend of high-quality potting soil, orchid bark, perlite, and a bit of coco coir or peat for moisture retention.

• Aim for a mix that holds moisture but drains quickly to provide oxygen to the roots.

• Use pots with drainage holes. Consider terracotta for better moisture regulation.

Fertilizing

• Feed lightly during the active growing season (spring through early fall). Use a balanced, water-soluble fertilizer at 1/4 to 1/2 the recommended strength every 4–6 weeks.

• Do not over-fertilize; because growth is generally slow, excess salts can build up and damage roots and foliage.

• Flush the potting mix with clear water every few months to remove accumulated salts.

Support and growth habit

• Monstera obliqua is a vining climber. Provide a moss pole, trellis, or stakes to support vertical growth — climbing encourages larger, healthier leaves and more fenestrations.

• When grown trailing, leaves tend to be smaller; climbing supports better leaf development.