Problems

Monstera Adansonii Problems: Causes & Quick Fixes

Quick answer

Monstera Adansonii is prone to 43 common issues - each link below is a plant-specific fix guide.

Monstera Adansonii problems

Use the guides below to diagnose and fix common issues on Monstera Adansonii. Each problem page explains why it happens on this species and what to do first.

Or use our problem diagnosis tool to narrow down symptoms.

Common problems on Monstera Adansonii

Ants on Plant

Low

Likely cause: Monstera adansonii Monsteras are widely cultivated as ornamental houseplants around the world for their large, decorative foliage …

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Brown Tips

Medium

Likely cause: Low humidity

Quick fix: Increase humidity to 50%+

Full fix guide →

Likely cause: Mar 13, 2025 · Monstera deliciosa: The most popular variety, Monstera deliciosa, is known for its large, dark green leaves that can reach 2 feet or more across and are decorated with fenestrations, says …

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Crispy Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Drooping Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Distorted Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Holes in Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Leaf Drop

Medium

Likely cause: Feb 9, 2026 · The split-leaf philodendron (Monstera deliciosa) is a stunning climbing evergreen for indoors and out. Here's a care guide for your full-grown monstera.

Quick fix: Follow extension or botanical guidance for Monstera Adansonii leaf drop; adjust care before applying broad treatments.

Full fix guide →

Leaf Spot Disease

Medium

Likely cause: Feb 9, 2026 · The split-leaf philodendron (Monstera deliciosa) is a stunning climbing evergreen for indoors and out. Here's a care guide for your full-grown monstera.

Quick fix: Follow extension or botanical guidance for Monstera Adansonii leaf spot disease; adjust care before applying broad treatments.

Full fix guide →

Leggy Growth

Medium

Likely cause: Insufficient light or no climbing support

Quick fix: Move to brighter light; provide moss pole

Full fix guide →

Leaf Miners

Medium

Likely cause: Feb 9, 2026 · The split-leaf philodendron (Monstera deliciosa) is a stunning climbing evergreen for indoors and out. Here's a care guide for your full-grown monstera.

Quick fix: Follow extension or botanical guidance for Monstera Adansonii leaf miners; adjust care before applying broad treatments.

Full fix guide →

Not Enough Light

Medium

Likely cause: Dec 23, 2025 · Learn how to grow monstera as a houseplant, including care needs such as amount of light, water, soil type, and the best fertilizer. Plus find out how to propagate and prune a monstera.

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Pale Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Plant Leaning

Medium

Likely cause: Monstera adansonii Monsteras are widely cultivated as ornamental houseplants around the world for their large, decorative foliage and tolerance of indoor conditions.

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Purple Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Pot Too Large

Medium

Likely cause: Monstera adansonii Monsteras are widely cultivated as ornamental houseplants around the world for their large, decorative foliage and tolerance of indoor conditions.

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Root Rot

Medium

Likely cause: Consistently wet soil

Quick fix: Repot in fresh draining mix; correct watering interval

Full fix guide →

Nutrient Lockout

Medium

Likely cause: Aug 7, 2025 · The Monstera Adansonii, a popular houseplant, relies on specific nutrients for robust growth and vibrant appearance. Deficiencies can impact its health and aesthetic appeal. This article …

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Sticky Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Transparent Leaves

Medium

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Sunburn / Scorched Leaves

High

Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

Full fix guide →

Yellow Leaves

Medium

Likely cause: Overwatering - too frequent

Quick fix: Allow top 3–5 cm to dry before watering

Full fix guide →

Aphids

Medium

Likely cause: Aphids on Monstera Adansonii cluster on soft unfurling leaves at vine tips, moss-pole crowns, and tight nodes along thin trailing stems. First step: isolate the pot, inspect the newest perforated grow

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Fungus Gnats

Medium

Likely cause: Fungus gnats on Monstera adansonii are small dark flies breeding in the top layer of constantly moist potting mix-not on the fenestrated leaves. First step: let the top 3–5 cm of mix dry completely an

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Low Humidity

Medium

Likely cause: Low humidity on Monstera Adansonii shows first at leaf edges and unfurling leaves. First step: measure humidity at the canopy and run a humidifier until you reach at least 50% relative humidity near t

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Mealybugs

Medium

Likely cause: Mealybugs on Monstera Adansonii hide in leaf axils along vining stems, moss-pole wraps, and unfenestrated juvenile tips. First step: isolate the plant and dab every visible cluster with a cotton swab

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Mold on Soil

Medium

Likely cause: White or gray fuzz on Monstera adansonii soil is usually harmless saprophytic mold on a damp surface-not a leaf disease. First step: scrape the top 1–2 cm, then let the top 3–5 cm of aroid mix dry bef

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Overwatering

Medium

Likely cause: Overwatering on Monstera adansonii shows as limp thin fenestrated leaves while the top 3–5 cm of mix stays wet, a heavy pot, and sometimes soft stems at nodes. First step: stop watering until the top

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Slow Growth

Medium

Likely cause: Slow growth on Monstera Adansonii usually means light is too weak, roots are crowded, or the plant is in winter rest-not that it needs more fertilizer. First step: move it to brighter indirect light a

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Spider Mites

Medium

Likely cause: Spider mites on Monstera Adansonii cause fine stippling and silk on thin fenestrated leaves, especially in dry winter air near heaters. First step: isolate the plant and shower-rinse every leaf unders

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Underwatering

Medium

Likely cause: Underwatering on Monstera Adansonii shows as a very light pot, limp fenestrated leaves, and dry mix 3–5 cm down. Bottom-soak until the root ball rewets, drain fully, then water when the top 3–5 cm dry

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Wilting

Medium

Likely cause: Wilting on Monstera adansonii starts with one check-soil moisture at 3–5 cm depth plus pot weight. Dry, light soil means thirst; wet, heavy soil with limp fenestrated leaves often means damaged roots,

Quick fix: See plant-specific guide for step-by-step fixes.

Full fix guide →

Brown Leaves

Medium

Likely cause: Common brown leaves pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Black Spots

Medium

Likely cause: Common black spots pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Scale Insects

Medium

Likely cause: Common scale insects pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Thrips

Medium

Likely cause: Common thrips pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Whiteflies

Medium

Likely cause: Common whiteflies pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Caterpillars

Medium

Likely cause: Common caterpillars pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Nitrogen Deficiency

Medium

Likely cause: Common nitrogen deficiency pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Iron Deficiency

Medium

Likely cause: Common iron deficiency pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Magnesium Deficiency

Medium

Likely cause: Common magnesium deficiency pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Potassium Deficiency

Medium

Likely cause: Common potassium deficiency pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Calcium Deficiency

Medium

Likely cause: Common calcium deficiency pattern on Monstera Adansonii under indoor care stress.

Quick fix: Inspect roots, watering, light, and pests; adjust one variable and monitor new growth.

Full fix guide →

Frequently asked questions

How often should I water Monstera Adansonii?

Every 7–10 days - allow top 3–5 cm to dry. Water thoroughly until drainage from holes. Reduce to every 10–14 days in winter.

What light does Monstera Adansonii need?

Monstera Adansonii grows best in bright indirect light, medium indirect light.

Is Monstera Adansonii toxic to pets?

Monstera Adansonii is toxic to cats, dogs, rabbits, birds, horses, turtles, and tortoises. Keep out of reach of curious pets and choose pet-safe alternatives for accessible spots.

How do I propagate Monstera Adansonii?

Propagate Monstera Adansonii from healthy stem or root divisions during active growth.

What soil is best for Monstera Adansonii?

Use standard potting mix + 20–25 % perlite + 10–15 % orchid bark. Well-draining aroid mix. pH 5.5–7.0.

When should I repot Monstera Adansonii?

Repot Monstera Adansonii when roots circle the pot or growth slows despite good care.

Why does my Monstera Adansonii have ants on plant?

Monstera adansonii Monsteras are widely cultivated as ornamental houseplants around the world for their large, decorative foliage … Quick fix: Confirm diagnosis on your Monstera Adansonii, then address the most likely care or pest factor described in current extension guidance.

How this Monstera Adansonii problems guide is reviewed?

Editorial policy Review board

Written by · Reviewed by LeafyPixels Review Board · Updated September 10, 2026

This Monstera Adansonii problems problem guide was researched and written by . Problems symptoms on Monstera Adansonii, lookalike causes, and step-by-step fixes are cross-checked against extension pest, disease, and care references before publication.

We prioritize sources that hold up under scrutiny:

University cooperative extension bulletins and fact sheets (Penn State, Clemson, UMD, NC State, and similar programs)
Botanical garden and horticultural society publications
Peer-reviewed plant science and veterinary toxicology references where pet safety matters (including ASPCA Animal Poison Control)
Established reference works on indoor plant culture

The LeafyPixels editorial team then reviews the draft for clarity, step-by-step usefulness, and fit with real apartment and home conditions-not ideal greenhouse setups. When guidance changes materially, we update the page and note the revision date.

Sources used

1/50 inch long (n.d.) Spider Mites. [Online]. Available at: https://extension.umn.edu/yard-and-garden-insects/spider-mites (Accessed: 10 September 2026).
65–80°F comfort range (n.d.) Monstera As A Houseplant. [Online]. Available at: https://extension.psu.edu/monstera-as-a-houseplant (Accessed: 10 September 2026).
American serpentine leafminer (*L. trifolii*) (n.d.) IN506. [Online]. Available at: https://edis.ifas.ufl.edu/publication/IN506 (Accessed: 10 September 2026).
anthocyanin buildup (n.d.) Purple Leaves. [Online]. Available at: https://www.canr.msu.edu/resources/purple-leaves (Accessed: 10 September 2026).
ants protect honeydew producers from predators (n.d.) Aphids. [Online]. Available at: https://ipm.ucanr.edu/home-and-landscape/aphids/ (Accessed: 10 September 2026).
aphids prefer on tender new growth and leaf undersides (n.d.) Online resource. [Online]. Available at: https://hgic.clemson.edu/?s=aphids (Accessed: 10 September 2026).
Apply insecticidal soap (n.d.) Insect Control Insecticidal Soap. [Online]. Available at: https://extension.colostate.edu/resource/insect-control-insecticidal-soap/ (Accessed: 10 September 2026).
Ask Extension (n.d.) Saprophytic mold FAQ. [Online]. Available at: https://ask.extension.org/kb/faq.php?id=620408 (Accessed: 10 September 2026).
ASPCA Animal Poison Control (n.d.) Aspca Poison Control. [Online]. Available at: https://www.aspca.org/pet-care/aspca-poison-control (Accessed: 10 September 2026).
black sooty mold (n.d.) Mealybugs. [Online]. Available at: https://ipm.ucanr.edu/home-and-landscape/mealybugs/ (Accessed: 10 September 2026).
Bottom-soak the pot (n.d.) Winter Indoor Plant Problems. [Online]. Available at: https://extension.umd.edu/resource/winter-indoor-plant-problems (Accessed: 10 September 2026).
bright shade under tree cover (n.d.) HS311. [Online]. Available at: https://edis.ifas.ufl.edu/publication/HS311 (Accessed: 10 September 2026).
circular patches, sometimes with yellowish margins (n.d.) Houseplant Diseases Disorders. [Online]. Available at: https://hgic.clemson.edu/factsheet/houseplant-diseases-disorders/ (Accessed: 10 September 2026).
Colorado State Extension (n.d.) 1339 Leaching Salts Potting Mixes. [Online]. Available at: https://planttalk.colostate.edu/topics/houseplants/1339-leaching-salts-potting-mixes/ (Accessed: 10 September 2026).
completes its life cycle in as few as five days around 80°F (n.d.) IN307. [Online]. Available at: https://edis.ifas.ufl.edu/publication/IN307 (Accessed: 10 September 2026).
Contact sprays and soaps (n.d.) Vegleafminers. [Online]. Available at: https://ipm.ucanr.edu/PMG/GARDEN/VEGES/PESTS/vegleafminers.html (Accessed: 10 September 2026).
Damaged roots cannot take up water or nutrients (n.d.) Indoor Plants Watering. [Online]. Available at: https://hgic.clemson.edu/factsheet/indoor-plants-watering/ (Accessed: 10 September 2026).
Excess water reduces oxygen in soil and shows as wilting or yellowing of lower leaves (n.d.) Leaf Yellowing Problems Flowers. [Online]. Available at: https://extension.umd.edu/resource/leaf-yellowing-problems-flowers (Accessed: 10 September 2026).
Excessive fertilizer causes soluble salts to concentrate (n.d.) Fertilizer Toxicity Or High Soluble Salts Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/fertilizer-toxicity-or-high-soluble-salts-indoor-plants (Accessed: 10 September 2026).
extension guides cite (n.d.) Fungal Leaf Spots Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/fungal-leaf-spots-indoor-plants (Accessed: 10 September 2026).
feed on honeydew excreted by aphids and soft scales (n.d.) Ants. [Online]. Available at: https://extension.umn.edu/insects-infest-homes/ants (Accessed: 10 September 2026).
fertilizer salt deposits on indoor plants (n.d.) Mineral And Fertilizer Salt Deposits Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/mineral-and-fertilizer-salt-deposits-indoor-plants (Accessed: 10 September 2026).
Fertilizing during winter when reduced light slows growth (n.d.) Fertilizer Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/fertilizer-indoor-plants (Accessed: 10 September 2026).
Fungus gnats (n.d.) How Treat Pesky Fungus Gnats Houseplants. [Online]. Available at: https://extension.umn.edu/yard-and-garden-news/how-treat-pesky-fungus-gnats-houseplants (Accessed: 10 September 2026).
Hold fertilizer on stressed indoor plants (n.d.) Nutrient Deficiency Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/nutrient-deficiency-indoor-plants (Accessed: 10 September 2026).
Honeydew from scale indoors may attract ants (n.d.) Scale Insects Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/scale-insects-indoor-plants (Accessed: 10 September 2026).
insecticidal soap or horticultural oil (n.d.) Common Houseplant Insects Related Pests. [Online]. Available at: https://hgic.clemson.edu/factsheet/common-houseplant-insects-related-pests/ (Accessed: 10 September 2026).
insoluble calcium oxalate crystals (n.d.) Swiss Cheese Plant. [Online]. Available at: https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/swiss-cheese-plant (Accessed: 10 September 2026).
internal water pressure (n.d.) Problems Common To Many Indoor Plants. [Online]. Available at: https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/visual-guides/problems-common-to-many-indoor-plants (Accessed: 10 September 2026).
Iowa State Extension (n.d.) Why Does My Houseplant Have Brown Leaf Tips And Edges. [Online]. Available at: https://yardandgarden.extension.iastate.edu/faq/why-does-my-houseplant-have-brown-leaf-tips-and-edges (Accessed: 10 September 2026).
Iowa State Extension (n.d.) Diagnosing Houseplant Problems Improper Environmental Conditions. [Online]. Available at: https://yardandgarden.extension.iastate.edu/how-to/diagnosing-houseplant-problems-improper-environmental-conditions (Accessed: 10 September 2026).
isolate the plant (n.d.) Insects Indoor Plants. [Online]. Available at: https://extension.umn.edu/product-and-houseplant-pests/insects-indoor-plants (Accessed: 10 September 2026).
let the top 1–2 inches dry between waterings (n.d.) Faq.Php. [Online]. Available at: https://ask.extension.org/kb/faq.php?id=857364 (Accessed: 10 September 2026).
local cooperative extension office (n.d.) Extension. [Online]. Available at: https://www.nifa.usda.gov/Extension (Accessed: 10 September 2026).
loses turgor (n.d.) Drought Stress Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/drought-stress-indoor-plants (Accessed: 10 September 2026).
Maryland Extension grooming guidance (n.d.) Grooming Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/grooming-indoor-plants/ (Accessed: 10 September 2026).
Mealybugs are very difficult to control (n.d.) Mealybugs Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/mealybugs-indoor-plants (Accessed: 10 September 2026).
Mississippi State Extension notes that sticky leaves are usually the first sign of soft scale on houseplants (n.d.) Insect Pests Houseplants. [Online]. Available at: https://extension.msstate.edu/publications/insect-pests-houseplants (Accessed: 10 September 2026).
Missouri Botanical Garden (n.d.) Monstera adansonii. [Online]. Available at: https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=276655 (Accessed: 10 September 2026).
Missouri Botanical Garden (n.d.) Problems Common To Many Indoor Plants. [Online]. Available at: https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/visual-guides/problems-common-to-many-indoor-plants/ (Accessed: 10 September 2026).
Monstera Adansonii contains calcium oxalate crystals toxic to pets (n.d.) Swiss Cheese Plant. [Online]. Available at: https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/swiss-cheese-plant (Accessed: 10 September 2026).
Monstera contains calcium oxalate crystals (n.d.) Monstera. [Online]. Available at: https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/monstera (Accessed: 10 September 2026).
Moving indoor plants between environments can cause leaf drop (n.d.) Lighting Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/lighting-indoor-plants (Accessed: 10 September 2026).
NC State Extension (n.d.) Overwatering. [Online]. Available at: https://content.ces.ncsu.edu/overwatering (Accessed: 10 September 2026).
no more than 2 inches larger in diameter (n.d.) Repotting Houseplants. [Online]. Available at: https://wayne.ces.ncsu.edu/news/repotting-houseplants/ (Accessed: 10 September 2026).
Not enough light can cause slow, spindly growth and the development of small pale leaves (n.d.) Houseplants%202022 Pdf. [Online]. Available at: https://www.missouribotanicalgarden.org/Portals/0/Kemper%20Gardens/Fact%20Sheets/Houseplants%202022-pdf.pdf (Accessed: 10 September 2026).
Oedema is caused when roots take up more water than leaves can transpire (n.d.) Oedema. [Online]. Available at: https://www.rhs.org.uk/problems/oedema (Accessed: 10 September 2026).
only two inches larger in diameter than the current pot, because excess soil can hold water and lead to root rot (2014) 012712. [Online]. Available at: https://wpcdn.web.wsu.edu/extension/uploads/sites/57/2014/04/012712.pdf (Accessed: 10 September 2026).
Penn State Extension (n.d.) Monstera As A Houseplant. [Online]. Available at: https://extension.psu.edu/monstera-as-a-houseplant/ (Accessed: 10 September 2026).
plants just brought home seldom need immediate repotting (n.d.) G6510. [Online]. Available at: https://extension.missouri.edu/publications/g6510 (Accessed: 10 September 2026).
programmed cell death while the leaf is still tiny (n.d.) The Swiss Cheese Plant. [Online]. Available at: https://botanicalgarden.berkeley.edu/learn/garden-stories/the-swiss-cheese-plant/ (Accessed: 10 September 2026).
Quarantine every new Monstera Adansonii for two weeks (n.d.) Aphids. [Online]. Available at: https://pestsense.cahnrs.wsu.edu/fact-sheet/aphids/ (Accessed: 10 September 2026).
rapid-growing vining aroid (n.d.) Monstera Adansonii. [Online]. Available at: https://plants.ces.ncsu.edu/plants/monstera-adansonii/ (Accessed: 10 September 2026).
reproduce quickly (n.d.) Aphids. [Online]. Available at: https://extension.umn.edu/yard-and-garden-insects/aphids (Accessed: 10 September 2026).
sap-feeding insects excreting honeydew (n.d.) What Sticky Substance All Over Table Floor And Lower Leaves My Houseplant. [Online]. Available at: https://yardandgarden.extension.iastate.edu/faq/what-sticky-substance-all-over-table-floor-and-lower-leaves-my-houseplant (Accessed: 10 September 2026).
secondary outbreaks after aphid or mite sprays (n.d.) Leaf Miners. [Online]. Available at: https://ucanr.edu/site/uc-marin-master-gardeners/article/leaf-miners (Accessed: 10 September 2026).
Small, soft-bodied insects (n.d.) Pn7404. [Online]. Available at: https://ipm.ucanr.edu/PMG/PESTNOTES/pn7404.html (Accessed: 10 September 2026).
soap only works on direct contact (n.d.) Managing Houseplant Pests. [Online]. Available at: https://extension.colostate.edu/resource/managing-houseplant-pests/ (Accessed: 10 September 2026).
soggy roots fail to take up water (n.d.) Overwatering. [Online]. Available at: https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/insects-pests-and-problems/environmental/overwatering (Accessed: 10 September 2026).
spider mites spread quickly on stressed houseplants (n.d.) Houseplant Pests. [Online]. Available at: https://extension.umn.edu/news/houseplant-pests (Accessed: 10 September 2026).
Test alcohol on one thin leaf first and wait a day (n.d.) Search. [Online]. Available at: https://extension.colostate.edu/search/?q=mealybugs+on+houseplants+5+585 (Accessed: 10 September 2026).
Thrips feed by puncturing leaf surfaces and sucking cell contents (n.d.) Pn7429. [Online]. Available at: https://ipm.ucanr.edu/PMG/PESTNOTES/pn7429.html (Accessed: 10 September 2026).
tiny arachnids that pierce leaf cells and suck sap (n.d.) Spider Mites. [Online]. Available at: https://ipm.ucanr.edu/home-and-landscape/spider-mites/ (Accessed: 10 September 2026).
too large of a pot may retain too much moisture and lead to root rot (n.d.) 2616e. [Online]. Available at: https://extension.umaine.edu/publications/2616e/ (Accessed: 10 September 2026).
translucent margin spots that become reddish-brown with yellow halos (n.d.) Philodendron Diseases. [Online]. Available at: https://extension.psu.edu/philodendron-diseases (Accessed: 10 September 2026).
UC IPM (n.d.) Houseplant Problems. [Online]. Available at: https://ipm.ucanr.edu/home-and-landscape/houseplant-problems/ (Accessed: 10 September 2026).
UC IPM notes that ants "farm" sap-sucking houseplant pests (n.d.) Pn74172. [Online]. Available at: https://ipm.ucanr.edu/PMG/PESTNOTES/pn74172.html (Accessed: 10 September 2026).
UC Master Gardeners Santa Clara County (n.d.) Watering Hydrophobic Soil. [Online]. Available at: https://ucanr.edu/site/uc-master-gardeners-santa-clara-county/watering-hydrophobic-soil (Accessed: 10 September 2026).
UF/IFAS EP639 (n.d.) Monstera toxicity. [Online]. Available at: https://ask.ifas.ufl.edu/publication/EP639 (Accessed: 10 September 2026).
UMN Extension (n.d.) Managing spider mites on houseplants. [Online]. Available at: https://extension.umn.edu/news/managing-spider-mites-houseplants (Accessed: 10 September 2026).
Uniform chlorosis on older foliage is an early nitrogen deficiency symptom (n.d.) Report02 N D.Shtml. [Online]. Available at: https://hort.ifas.ufl.edu/database/nutdef/report02_N-D.shtml (Accessed: 10 September 2026).
University of Maryland Extension (n.d.) Fungus gnats. [Online]. Available at: https://www.extension.umd.edu/resource/fungus-gnats (Accessed: 10 September 2026).
University of Maryland Extension (n.d.) Temperature And Humidity Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/temperature-and-humidity-indoor-plants/ (Accessed: 10 September 2026).
University of Maryland Extension (n.d.) Watering Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/watering-indoor-plants (Accessed: 10 September 2026).
University of Minnesota Extension (n.d.) Mold on houseplant soil. [Online]. Available at: https://extension.umn.edu/yard-and-garden-news/mold-growing-houseplant-soil (Accessed: 10 September 2026).
water-soaked at first (n.d.) Bacterial Leaf Spots Indoor Plants. [Online]. Available at: https://extension.umd.edu/resource/bacterial-leaf-spots-indoor-plants (Accessed: 10 September 2026).
water-soaked, irregular grey to black patches (n.d.) Publication. [Online]. Available at: https://www.ars.usda.gov/research/publications/publication/?seqNo115=406099 (Accessed: 10 September 2026).
Wisconsin Horticulture (n.d.) Fungus gnats on houseplants. [Online]. Available at: https://hort.extension.wisc.edu/articles/fungus-gnats-on-houseplants/ (Accessed: 10 September 2026).
Yellowing of lower leaves and death of growing tips can be caused by too little light or overwatering (n.d.) Philodendron Pothos Monstera. [Online]. Available at: https://hgic.clemson.edu/factsheet/philodendron-pothos-monstera/ (Accessed: 10 September 2026).