Aroids: Care, Propagation, and Species Guides

Aroids are plants in the family Araceae, one of the most diverse plant families in cultivation. The family is defined by a distinctive flower structure: a spike-like spadix bearing tiny flowers, surrounded by a modified leaf called a spathe. The spathe is what most people recognize as the flower in anthurium and peace lily; in monstera and philodendron, the inflorescence is rarely seen indoors. The family is enormous, encompassing over 3,700 species across more than 100 genera, and includes some of the most popular and most collected houseplants in the world.

The genera most commonly grown indoors include Monstera, Alocasia, Anthurium, Rhaphidophora, Philodendron, Epipremnum (pothos), Colocasia, Caladium, Zamioculcas (ZZ plant), and Spathiphyllum (peace lily). Philodendrons and pothos have their own dedicated hubs in this silo; this hub covers the broader aroid family with guides for the genera not covered elsewhere.

Shared Care Characteristics

Most aroids share a set of care preferences that reflect their tropical or subtropical origin. They prefer bright indirect light, though many are more tolerant of lower light than their care reputations suggest. They grow in forest environments where direct sun rarely reaches the lower canopy, so they have evolved to use filtered light efficiently.

Well-draining, aerated growing media suits aroids better than standard dense potting soil. In the wild, many aroids grow as epiphytes or hemi-epiphytes, with roots that cling to bark, rocks, or tree surfaces rather than sitting in continuous soil. These roots need oxygen as much as moisture, which is why a mix that drains freely and does not compact is important. The how to make an aroid potting mix guide covers the recipes and ingredient ratios that replicate these conditions at home.

Most aroids are toxic. They contain calcium oxalate crystals in their tissue, which cause irritation to the mouth, throat, and digestive tract if ingested, and can cause skin and eye irritation on contact with the sap. This applies to philodendron, pothos, monstera, alocasia, anthurium, and most other aroids. Keep out of reach of pets and children.

Monstera

Monstera deliciosa is the most widely grown aroid indoors and one of the most recognizable houseplants worldwide. It produces large, glossy, perforated leaves that develop their characteristic fenestrations, the leaf holes, as the plant matures and the leaves reach larger sizes. Full care is in the monstera deliciosa care guide. For the highly sought-after variegated forms including Monstera deliciosa ‘Thai Constellation’ and ‘Albo Variegata’, the variegated monstera plants guide covers the types available, their care differences, and how to source them.

Alocasia

Alocasias are striking aroids with large, dramatic leaves in shapes ranging from elongated arrow-heads to broad shields, often with vivid venation and metallic or velvety surfaces. They are more demanding than most aroids in their requirements for humidity and consistent care. The alocasia varieties guide covers the full range of species available. Species guides for two of the most distinctive: alocasia stingray care and alocasia cuprea care.

Anthurium

Anthuriums are aroids grown for both their dramatic foliage and their long-lasting, waxy spathes in red, pink, white, and purple. Anthurium crystallinum is a collector species grown for its large, velvety, heart-shaped leaves with white venation. The anthurium crystallinum care guide covers this species in detail.

Rhaphidophora

Rhaphidophora is a genus closely related to monstera, with several species that have become popular collector plants. Rhaphidophora tetrasperma is commonly called mini monstera because its fenestrated leaves resemble a small monstera deliciosa, though the two are not closely related. Rhaphidophora decursiva is a fast-growing climbing species that produces deeply lobed leaves on maturity. Species guides: rhaphidophora tetrasperma care and rhaphidophora decursiva care.

Propagation

Aroids propagate by several methods depending on their growth habit: stem cuttings for vining and climbing species, division for clumping species such as alocasia, and offset separation for species that produce pups. The how to propagate aroids guide covers all three methods. For philodendron-specific propagation, the philodendron propagation guide covers that genus in detail.

For pest management relevant to aroids, including spider mites, scale, and thrips, the plant health problems hub links to the relevant diagnostic and treatment guides.