Florivern Herbarium · Sheet HERB-01
Det. — species determination
Monstera deliciosa
Swiss Cheese Plant
Fam.
Araceae
Hemiepiphytic Neotropical climber celebrated for programmed cell-death foliar fenestrations that reduce wind torque and allow light transmission to lower canopy leaves.
Hab. — where it grows wild
Montane cloud forests of southern Mexico (Oaxaca, Chiapas) to Panama
HERB-01
Characters
Group
Tropical Foliage
Setting
Indoor
Size class
Floor Statement (1.0–2.5 m)
Temperament
Effortless / Resilient
Animals
Toxic if Ingested
Sheet II — Conditions of cultivation
How it has been grown,
and what changes it.
Irrigate thoroughly when the upper 5–8 cm of coarse aroid substrate reaches dryness. Frequency depends on ambient vapor pressure deficit, pot porosity, and seasonal photoperiod—typically every 7–10 days in active summer growth and every 14–18 days during winter rest.
50% – 75% RH (tolerates 40% ambient indoor humidity)
18°C – 29°C (65°F – 85°F); sensitive to sustained temperatures below 12°C
Air temperature as recorded for this species in cultivation. Cold drafts matter more than the average.
Coarse, high-porosity epiphytic aroid matrix: 40% aged Douglas fir bark, 25% horticultural pumice, 25% coco coir chips, 10% worm castings (pH 5.5–6.5).
Height 1.5–2.4 m indoors; leaf blades 35–60 cm wide with secondary midrib fenestrations
Sheet III — Animals and households
If a cat, a dog or a child shares the room
Toxic if ingested
Keep it out of reach of cats, dogs and small children. Place it where chewing is not a habit.
The record
Contains insoluble calcium oxalate raphides across leaf lamina, petioles, and aerial roots. Ingestion by cats or dogs causes immediate oral irritation, hypersalivation, and localized mucosal swelling (ASPCA verified).
Florivern is a herbarium and a shop, not a veterinary authority. If you suspect a plant has been eaten, call your veterinarian or an animal poison control line.
Sheet IV — Monograph
Notes toward cultivation
Morphology & Fenestration Mechanics
In its native montane cloud-forest habitat, Monstera deliciosa begins life as a terrestrial seedling seeking the dark silhouette of a host trunk via skototropism. As it ascends into brighter canopy strata, ontogenetic shifts trigger programmed cell death along inter-costal foliar tissue, producing the signature perforations that minimize wind resistance and allow dappled light to reach lower leaves.
Juvenile and adult leaves
Young plants produce entire, heart-shaped leaves. Splits and holes usually appear only once a plant is larger and receives stronger light, which is why a monstera kept in a dim corner can stay juvenile for years. Aerial roots are normal: they are how the plant anchors itself to a host tree in the wild.
In cultivation
Give bright, indirect light and something to climb. A moss pole or plank lets the stem rise the way it would on a trunk, and climbing plants generally make larger leaves than sprawling ones. Water when the upper part of the mix has dried, and less often in winter when growth slows.
Propagation
Stem cuttings root readily, but a cutting needs at least one node — the point where a leaf and an aerial root emerge. A leaf on its own will not grow a new plant. Cuttings can be rooted in water or directly in a coarse, airy mix.
Common problems
Yellowing lower leaves with soggy mix usually point to overwatering or poor drainage.
Brown, crisp edges are more often dry air or irregular watering.
Small leaves without splits usually mean the plant needs more light, not more fertilizer.
Supplementary plates
Plates show cultivated individuals, not a type specimen. Leaf form, color and habit vary between plants of the same species.
Sheet V — Cited in the Journal
Further reading on this plant
Held in the Store
Specimens and materials
Monstera Deliciosa — Fenestrated Specimen
In Stock
$165
Epiphytic Aroid & Orchid Bio-Substrate (8 L)
In Stock
$34
Each specimen is an individual plant; size and form differ from the plates on this sheet.