Monstera obliqua is a rare hemiepiphyte with unique leaf fenestrations. There are many ‘forms’ of Monstera obliqua, each native to a specific geographical area. This article discusses the rarest form, Monstera obliqua Peru.
Madison 1977 notes that Monstera obliqua leaves can vary greatly by geographical region. The Peru form has up to 90 percent of the leaf area fenestrated. Making it the most desirable form for plant enthusiasts.
In its native habitat in Peru, Monstera obliqua produces 30 to 70 leaves per year. But otherwise, it grows very slowly taking a month or more to produce a single leaf. It is a vining plant that can grow up a moss cover pole or cascade over a pot.
Monstera Obliqua Peru Care
Proper care of Monstera obliqua is critical. Since it grows slowly and will take a long time to recover from damage. Overwatering and unacceptable lighting conditions are two of the most common causes of unhealthy Monstera obliqua plants.
Monstera obliqua requires high humidity levels and well-draining soil to thrive. You’ll also need to fertilize it regularly and watch for insects and disease issues. Below are all the details you need to successfully grow Monstera obliqua Peru.
Use well-draining soil, such as an aroid mix, to prevent overwatering. Aroid mixes vary but most consist of coco coir, perlite, orchid bark, potting soil, worm castings, and horticultural charcoal.
Another option is to simply use 100 percent sphagnum moss. But keep in mind it contains no nutrients for your Obliqua Peru.
Don’t overwater your Monstera obliqua Peru. Only water when the soil is dry. Do not use saucers under the plant’s pot as this will not allow the soil to drain properly and may lead to root issues.
The obliqua Peruvian form does not tolerate direct sunlight well. Bright, indirect light works best. The University of Georgia recommends you provide 75 to 200 footcandles (ft-c) of light for Monstera obliqua.
Humidity & Temperature
Being native to the tropics, Monstera obliqua Peru needs high humidity and warm temperatures. Humidity should be kept around 80 percent. Which is achievable by growing your plant in a terrarium or plastic box. The ideal temperature is 75 to 80 degrees Fahrenheit.
Fertilize your Monstera obliqua Peru monthly. This is especially important when using sphagnum moss as your soil. A liquid fertilizer with a nitrogen, phosphorus, potassium ratio of 20-20-20 works well.
Propagation of Monstera obliqua Peru is a difficult and slow process. Node cuttings from Monstera obliqua Peru runners are likely the most cost effective and easiest to obtain for propagation. Ideally your cutting should have 2 to 4 nodes.
Place the cutting on moist sphagnum moss in a container with a lid to increase humidity. Place it in a well-lit area and open the container once a day to let in fresh air. A heating pad under the container, to keep it warm, can help.
Patience is key! It can take 4 months or longer before you see leaves begin to grow.
Diseases & Pests
Whitefly, mealybugs, spider mites, and thrips can all feed on Monstera obliqua Peru. And can be controlled with insecticides. Diseases which can impact it include anthracnose, powdery mildew, mosaic virus, leaf-spot disease, root rot, rust, and southern blight. Prevent disease by providing proper care to keep your plant healthy. And quarantine any new plants you acquire.
The calcium oxalate in Monstera obliqua Peru is toxic to pets and humans. It will cause irritation of the mouth, esophagus, and stomach, decreased appetite, and vomiting.
Frequently Asked Questions
Monstera obliqua Peru is an extremely rare plant. Making it highly desirable and expensive. It is also very difficult to propagate from cuttings. Which often take many months to develop healthy roots and new leaves. Monstera obliqua is also very slow to grow, limiting how many cuttings a plant can produce each year.
Excessive light or overwatering are the most common causes of Monstera obliqua Peru leaves yellowing. Underwatering, low humidity, inadequate light and unfavorable temperatures can also lead to yellowing leaves. Damage from insects and diseases can also make leaves turn yellow.