Houseplant Light Requirements Database
Search species, cultivars and synonyms. Filter numerical, contextual and qualitative records without turning missing evidence into a guessed PPFD target.
Showing 30 of 30 records
| Plant | Scientific name | PPFD reference | Mode | Evidence | Confidence |
|---|---|---|---|---|---|
| Monstera Deliciosa | Monstera deliciosa | 150–250 | full | exact species | Medium confidence |
| Monstera Thai Constellation | Monstera deliciosa | 150–250 context | contextual | exact cultivar | Medium confidence |
| Monstera Albo | Monstera deliciosa | 150–250 context | qualitative | exact cultivar | Limited evidence |
| Monstera Adansonii | Monstera adansonii | Not established | qualitative | exact species | Limited evidence |
| Golden Pothos | Epipremnum aureum | 50–150 | full | exact species | High confidence |
| Marble Queen Pothos | Epipremnum aureum | 50–150 context | contextual | exact cultivar | Medium confidence |
| Neon Pothos | Epipremnum aureum | 50–150 context | contextual | exact cultivar | Medium confidence |
| Manjula Pothos | Under review | Not established | qualitative | exact cultivar | Limited evidence |
| Heartleaf Philodendron | Philodendron hederaceum | 50–150 | full | exact species | Medium confidence |
| Pink Princess Philodendron | Philodendron erubescens | 50–150 context | contextual | exact cultivar | Medium confidence |
| Alocasia Frydek | Alocasia micholitziana | 150–250 context | contextual | genus | Medium confidence |
| Alocasia Cuprea | Alocasia cuprea | 150–250 context | contextual | genus | Medium confidence |
| Snake Plant | Dracaena trifasciata | 50–150 | full | exact species | Medium confidence |
| Fiddle Leaf Fig | Ficus lyrata | 150–250 | full | exact species | Medium confidence |
| White Bird of Paradise | Strelitzia nicolai | Not established | contextual | exact species | Limited evidence |
| Rubber Plant | Ficus elastica | 150–250 | full | exact species | Medium confidence |
| Peace Lily | Spathiphyllum wallisii | 50–150 context | contextual | genus | Medium confidence |
| Spider Plant | Chlorophytum comosum | 150–250 | full | exact species | High confidence |
| Hoya Carnosa | Hoya carnosa | 150–250 context | contextual | genus | Medium confidence |
| Calathea Orbifolia | Goeppertia orbifolia | Not established | qualitative | exact species | Medium confidence |
| Peacock Plant | Goeppertia makoyana | Not established | qualitative | exact species | Medium confidence |
| African Violet | Streptocarpus ionanthus | Not established | qualitative | exact species | Medium confidence |
| String of Pearls | Curio rowleyanus | Not established | qualitative | exact species | Medium confidence |
| Jade Plant | Crassula ovata | 150–250 | full | exact species | Medium confidence |
| Anthurium Clarinervium | Anthurium clarinervium | Not established | qualitative | exact species | Medium confidence |
| Alocasia Polly | Alocasia × mortfontanensis | 150–250 context | contextual | genus | Medium confidence |
| Alocasia Black Velvet | Alocasia reginula | 150–250 context | contextual | genus | Medium confidence |
| Philodendron Brasil | Philodendron hederaceum | 50–150 context | contextual | genus | Medium confidence |
| White Princess Philodendron | Philodendron erubescens | 50–150 context | contextual | genus | Medium confidence |
| Alocasia Dragon Scale | Alocasia baginda | 150–250 context | contextual | genus | Medium confidence |
How to use the Houseplant Light Requirements Database
Houseplant Light Requirements Database exists to let users search plant identity and understand how strongly each light reference is supported. The page focuses on species and cultivar light records with PPFD references, evidence scope, confidence and explicit missing data and keeps the measurement, evidence and interpretation steps separate so a precise-looking value never hides weak biological evidence.
The most useful starting information is common name, scientific name, cultivar, synonym, evidence mode, confidence and plant features. These attributes describe either the plant, the light environment or the measurement context. PlantLightIndex uses them because houseplant light is not one universal label. A plant beside a window, a plant several metres into the room and a plant directly under a grow light can experience very different photon flux even when the room feels equally bright to a person.
The expected output is a filtered set of plant records that separates practical numerical references from contextual and qualitative guidance. That output should be read as a decision aid, not as a guarantee of growth. The site is designed to answer the light question clearly while leaving unrelated care factors outside the result. Water availability, root condition, temperature, nutrition, pests and acclimation can all influence plant performance, so a correct light result is one environmental observation rather than a complete health diagnosis.
The database treats plant identity and light evidence as separate layers. Cultivars can therefore have their own evidence status even when they share a parent species.
Search by the plant name you actually know
The database searches common names, accepted scientific names, older botanical names, cultivars, synonyms and trade names. That matters because houseplant naming is messy. A user may type Snake Plant or Sansevieria trifasciata even though the accepted record is stored as Dracaena trifasciata. Heartleaf Philodendron may be searched under older names such as Philodendron scandens. Search aliases help users reach the correct entity without rewriting taxonomy to match popular usage.
Cultivars remain separate records when their light evidence or search intent is meaningfully different. Thai Constellation, Marble Queen Pothos and Pink Princess Philodendron are not reduced to a generic parent row. This lets the database show cultivar-specific physiology when it exists and parent context when exact household evidence does not.
What the Full, Contextual and Qualitative filters mean
A Full record has a practical numeric PPFD reference that PlantLightIndex considers suitable for direct comparison in the calculator. Contextual records can display a related parent or genus range, but the site labels the scope so the number is not mistaken for an exact cultivar target. Qualitative records explain the available light guidance without assigning a precise range.
These filters are more useful than sorting plants into only low, medium and bright categories. A generic label may help a beginner orient themselves, but it does not tell you whether the number is supported for the exact taxon. Filtering by evidence mode lets you separate the strongest numerical records from records that still need better research.
How confidence differs from evidence scope
Evidence scope asks how closely the source matches the plant entity. Confidence asks how strong the evidence is overall. An exact-species record can still have medium confidence if quantitative research is limited. A broader genus reference can be useful but should remain visibly broader. PlantLightIndex considers source quality, taxon match, direct measurement, agreement among sources and household relevance when assigning confidence.
Do not interpret a confidence label as a probability that your plant will thrive. It is a description of the evidence behind the light reference. Individual plants also differ because of acclimation, age, canopy structure and previous growing conditions.
How to compare PPFD rows correctly
A PPFD range in the database is a practical comparison range unless the page explicitly identifies another evidence type. The lower edge is not a biological cliff, and the upper edge is not automatically a damage threshold. A reading slightly outside a practical band should prompt interpretation, not panic. Open the plant profile to see whether the range is exact-species, parent or genus context and whether an upper-tolerance value actually exists.
The database also avoids deriving DLI targets from PPFD by assuming an arbitrary twelve-hour photoperiod. If a species-specific daily target is not established in the reviewed evidence, the DLI field remains Not established even though the PPFD-to-DLI arithmetic can still be performed for your own setup.
Use filters to build a researchable shortlist
Search and filters are designed for decisions. Use Numeric PPFD target available when you want records that can be compared directly with a sensor reading. Use Contextual reference when you are comfortable reading broader evidence with caveats. The variegated filter helps surface cultivars where light and leaf coloration often drive user questions, while the grow-light-friendly filter helps identify records with suitable artificial-light guidance.
After creating a shortlist, open the individual profiles instead of treating the database table as the final answer. Profiles explain taxonomy, measurement context, low-light observations, variegation considerations and uncertainty. The table is for navigation and comparison; the profile is where the evidence is interpreted.
How evidence scope changes the answer
A numerical plant-light recommendation is only as specific as the evidence behind it. Exact-cultivar evidence applies most directly to a named cultivar. Exact-species evidence applies directly to a species record. A parent-species reference can provide useful context for a cultivar, while a genus-level reference is broader again. Those categories should not be presented as equivalent.
PlantLightIndex uses full, contextual and qualitative calculator modes. A full record contains a practical numerical reference suitable for direct comparison. A contextual record may show a related parent or genus range but explicitly labels it as context. A qualitative record explains what is known without generating an exact numerical target. This structure is especially important for variegated cultivars, where physiology can differ from a green parent.
Confidence is also shown. The confidence label reflects source quality, taxon match, direct measurement, agreement among independent evidence and relevance to indoor growing. It does not mean that a plant has a fixed percentage chance of success. The measurement itself can also have uncertainty, and individual plants can respond differently because of acclimation and growing history.
How to measure or enter the information correctly
Use values that describe the plant's real growing position. If PPFD is involved, measure at leaf level. For a small plant, one representative point may be useful. For a large specimen, take several readings across the canopy because the top, centre and outer leaves can receive different light. Record the light source and approximate time.
For grow lights, measure at the actual mounting distance and dimmer setting. Do not hold the sensor next to the fixture and assume the same value reaches the leaves. Beam angle, optics and distance change both intensity and coverage. Two lights using the same electrical wattage can produce very different PPFD at the plant.
For window light, remember that natural PPFD changes through the day. Direction, distance from glass, window size, season, latitude, cloud cover, buildings, trees and curtains can all change the result. A single midday measurement is a snapshot. Several readings provide better context when the daily pattern changes strongly.
When a tool uses an estimate rather than a measurement, PlantLightIndex labels that origin. Estimated window light and interpolated fixture values should not be displayed as if a quantum sensor measured them directly.
A practical example of how to interpret the result
A search for Snake Plant can resolve the accepted name Dracaena trifasciata while still finding the older Sansevieria trifasciata synonym. A Thai Constellation record can show a parent reference as context without copying it as an exact cultivar target.
The important lesson is to keep the calculation and biological claim separate. If a calculator produces a DLI of 6.48 mol/m²/day, that number follows mathematically from the entered PPFD and hours. It does not prove that 6.48 is an ideal DLI for every houseplant. If a chart shows a practical PPFD range, the upper edge is not automatically a damage threshold. If a window estimator returns “medium,” the label is still an estimate until a real measurement replaces it.
The same principle applies to experimental research. A plant surviving at a very low PPFD demonstrates tolerance under those study conditions. It does not establish the same intensity as an optimum for ornamental growth. A photosynthetic light-saturation point is a physiological benchmark, not necessarily a recommended household setting. A greenhouse production treatment answers a production question, which may differ from a living-room care question.
PlantLightIndex stores those contexts separately so the user can see what a value is actually evidence for.
What a trustworthy result on Houseplant Light Requirements Database should tell you
A useful result should identify the quantity being discussed, the origin of the value and the strength of the biological reference. On this page, the central focus is species and cultivar light records with PPFD references, evidence scope, confidence and explicit missing data. The relevant inputs are common name, scientific name, cultivar, synonym, evidence mode, confidence and plant features. A user should be able to tell which of those values were measured, which were estimated and which came from the curated plant or fixture dataset.
The result should also preserve units. PPFD belongs in µmol/m²/s, DLI belongs in mol/m²/day, duration belongs in hours and fixture distance needs an explicit unit. A qualitative label such as bright or medium should never be displayed as though it were a sensor reading. If the page returns a filtered set of plant records that separates practical numerical references from contextual and qualitative guidance, the explanation should state what that output can support and what it cannot prove.
Evidence language matters just as much as arithmetic. Exact-species evidence can support a more direct statement than genus context. A parent reference can be useful for a cultivar without becoming an exact cultivar target. An experimental observation should retain the study context. This is why PlantLightIndex places confidence and evidence scope near the result instead of hiding them in a methodology page.
When to revisit the measurement or comparison
Light environments change. Re-check after moving the plant, changing fixture height, adjusting a dimmer, moving curtains or blinds, replacing a grow light, rotating a large specimen, or entering a different season near a window. A growing plant can also move its newest leaves into a different light zone even when the pot never changes position.
Use the same measurement method when comparing before and after. Note the sensor position, time, light source and duration assumptions. If a result was based on an estimate, replace it with a measured PPFD when possible. If the biological record was contextual or qualitative, review the plant profile later because stronger species- or cultivar-specific evidence may change the recommendation status.
Keep the measurement chain intact
When you move from one PlantLightIndex tool to another, carry the original measurement details with the number. A PPFD value should remain tied to its leaf position and light source. A DLI value should remain tied to both PPFD and the hours used in the calculation. An interpolated fixture value should remain labelled as an estimate. This prevents a number from becoming more certain simply because it appears on a second page.
The same rule applies to plant evidence. If the plant record uses a genus or parent reference, that scope should remain visible in the calculator, chart and matcher. Changing the format from a profile to a table does not strengthen the underlying evidence. Consistent provenance makes different tools comparable without turning context into certainty.
What can make the result misleading?
The launch database is intentionally small. A missing target does not mean the plant has no light requirement; it means the reviewed evidence is not strong enough for the specific numerical claim.
Another source of error is plant identity. Common names can refer to different species, and older scientific names can remain popular long after taxonomy changes. Cultivars can also be mistaken for species. The plant database stores accepted scientific names, common names, synonyms and trade names separately so a search alias does not silently redefine the biological entity.
Measurement method matters too. A lux meter is not a universal PPFD meter. A phone sensor may be useful for relative brightness but can differ from a calibrated quantum sensor. Manufacturer PPFD maps can be useful when the test conditions are clear, but room reflections, fixture height and dimmer settings may differ from the published setup.
Finally, biological response is not perfectly sharp at one boundary. A reading one unit below a practical range is not meaningfully different from a reading one unit above it. Ranges are decision aids. Observe patterns over time and avoid treating care references as exact on/off thresholds.
How to use this information to make a change
Start by confirming the current light rather than changing several variables at once. If the measurement is clearly below an appropriate practical reference, you can move the plant closer to a suitable window, reduce shading, increase grow-light output, adjust fixture distance or consider a longer daily duration when a valid DLI framework exists.
If you increase light substantially, acclimate the plant. Leaves developed under dim conditions may respond differently to a sudden strong exposure. A gradual change also makes it easier to identify the cause of a response. After changing the setup, measure again at the leaves instead of assuming the adjustment produced the intended PPFD.
If the record is contextual or qualitative, keep the uncertainty in the decision. A genus-level range can tell you whether your environment is broadly plausible, but it should not be treated as an exact cultivar optimum. Use observable growth, leaf development and repeated measurements while stronger evidence is unavailable.
The database treats plant identity and light evidence as separate layers. Cultivars can therefore have their own evidence status even when they share a parent species.
Common mistakes to avoid with Houseplant Light Requirements Database
The first mistake is looking for one universal number. Houseplants differ, cultivars can differ from their parent species, and the same plant can experience different canopy zones. The second mistake is confusing electrical watts, lux or visual brightness with PPFD at the leaves. The third is using a practical range as if it were a proven optimum or damage threshold.
Another mistake is ignoring time. PPFD does not include duration. DLI does, but DLI does not describe the exact intensity pattern used to reach the daily total. A user who changes fixture intensity and timer duration simultaneously can make it difficult to understand which variable caused the plant's response.
A final mistake is filling missing evidence with a convenient number from an unsourced page. PlantLightIndex intentionally displays “not established” when a precise plant-specific target cannot be defended. That blank is information. It tells the user the current evidence is weaker than the precision of the question.
How this page connects to other PlantLightIndex tools
Houseplant Light Requirements Database is part of a connected system rather than a standalone article. The plant database stores identity, PPFD references, evidence scope and confidence. The Houseplant Light Calculator compares a selected plant with a measured setup. The PPFD-to-DLI Calculator handles the objective light math. The Plant Light Matcher starts from an environment and finds compatible numerical records.
Window pages help users describe natural-light conditions when a PPFD measurement is not available. The grow-light database is designed to store verified fixture measurements at known distances and dimmer settings. Learn pages explain the underlying units and concepts so users can interpret the tools rather than treating them as black boxes.
The most relevant next steps for this page are:
Use internal links based on your current question. If you already have a measurement, move toward the calculator. If you are choosing a plant, move toward the database or matcher. If a unit is unclear, use the Learn guides first.
Document the setup so the result remains useful
A light value becomes much more useful when you can reproduce the conditions behind it. Record the plant or fixture identity, measurement position, PPFD origin, distance from the source, dimmer setting when relevant, and the hours used for any DLI calculation. For window measurements, add the approximate time and season. These details let you compare a later reading with the same setup instead of comparing two numbers collected under different conditions.
Good records also make uncertainty easier to spot. If one result came from a quantum sensor and another came from a broad window estimate, they should not be treated as equally precise. If the plant evidence changed from genus context to an exact-species reference, keep that distinction beside older notes. Measurement history is most valuable when provenance stays attached to the number.
Authoritative sources and measurement references
PlantLightIndex prioritizes peer-reviewed research, university extension, botanical institutions and established measurement references. Sources are used to support the concepts on this page, while plant-specific numerical claims remain tied to their own evidence records.
The page does not copy source wording. It uses those references to explain the measurement system, then keeps practical recommendations, physiology, production observations and estimates in their proper categories.