Do monstera plants need grow lights? Not always, but grow lights for monstera help in dim rooms and winter. University of Minnesota Extension lists monstera as a medium-light houseplant needing a PPF of about 150–250 µmol/m²/s (250–1,000 footcandles (about 2,700–10,800 lux)), and recommends hanging lights 12–24 inches (30–61 cm) above foliage houseplants for 12–14 hours a day.
Key takeaway: Monstera deliciosa, the Swiss cheese plant, is a climbing tropical vine that grows in dappled light under a forest canopy. NC State Extension says it prefers dappled sunlight or partial shade, and only mature leaves develop the famous holes. Indoors, most homes give it far less light than that. Grow lights for monstera close the gap, and extension guides from the University of Minnesota (UMN) and Iowa State University give clear numbers.
| Factor | Guideline | Source |
|---|---|---|
| Light category | Medium light | UMN Extension |
| Intensity | PPF 150–250 µmol/m²/s; 250–1,000 footcandles (about 2,700–10,800 lux) | UMN Extension |
| Distance | 12–24 in (30–61 cm) for foliage houseplants | UMN Extension |
| Hours | 12–14 hours a day for foliage houseplants | UMN Extension |
| Daily light integral | About 6–10 mol/m²/day for medium-light foliage | Iowa State |
| Natural habitat light | Dappled sun or partial shade | NC State Extension |
Do You Really Need Grow Lights for Monstera?
Only if your window is weak. UMN Extension says a medium-light plant suits an east-facing window or a spot near a west-facing window, out of direct light. Iowa State notes that even the brightest windowsill has only a fraction of outdoor light intensity, especially in winter. If your monstera sits far from a window, grow lights for monstera are the easiest fix.
Growing one in a vase? See our monstera in water guide.
How Much Light Do Grow Lights for Monstera Need to Give?
Medium intensity. UMN Extension defines medium light as a PPF of 150–250 µmol/m²/s, or 250–1,000 footcandles (about 2,700–10,800 lux), and lists monstera in its medium-light group. Iowa State’s daily light integral (DLI) table puts medium-light foliage houseplants at 6–10 mol/m²/day. Choose grow lights for monstera that can deliver that range across the whole plant, not just one leaf.
Learn how PPFD and DLI connect in our PPFD and DLI guide.
How Far Should Grow Lights for Monstera Be?
About 12 to 24 inches (30–61 cm). UMN Extension recommends that distance for foliage houseplants, compared with 4–6 inches (10–15 cm) for seedlings and 6–12 inches (15–30 cm) for flowering houseplants. Start grow lights for monstera near 24 inches (61 cm) and move them closer if growth stays sparse. Raise them if leaves look bleached or pale.
- Foliage houseplants: 12–24 in (30–61 cm).
- Tall plants: angle a second light at the lower leaves.
- Climbing plants: raise the light as the moss pole grows.
How Many Hours Should Grow Lights for Monstera Run?
About 12 to 14 hours a day. UMN Extension recommends 12 to 14 total light hours for foliage houseplants, using a timer. Iowa State says to calculate DLI by multiplying PPFD by hours of light by 0.0036. For example, 150 µmol/m²/s for 12 hours gives about 6.5 mol/m²/day, inside Iowa State’s medium-light range for grow lights for monstera.
- Measure or look up the PPFD at leaf height.
- Multiply PPFD × hours × 0.0036 to get DLI.
- Aim for about 6–10 mol/m²/day.
- Adjust hours or distance until you land in range.
What Type of Grow Lights for Monstera Works Best?
White or balanced LEDs. UMN Extension says LEDs are very energy efficient, long-lasting and offer a wide spectrum without much heat, though they cost more up front. It notes blue or mixed bulbs suit non-flowering houseplants, while white or balanced bulbs suit most plants at any stage. Because monstera is grown for foliage, full-spectrum white LEDs make good grow lights for monstera and look natural indoors.
Compare fixtures in our full-spectrum grow lights guide.
How Do You Know Your Monstera Needs More Light?
Watch the stems and new leaves. UMN Extension says plants short on light grow long spaces between leaf nodes, stretch toward the light, turn pale and may drop older leaves, and variegated plants may revert to solid green. NC State notes only mature monstera leaves develop holes. Leggy growth means grow lights for monstera should move closer or run longer.
- Leggy stems: long gaps between nodes.
- Pale leaves: less chlorophyll from low light.
- Leaf drop: older leaves fall first.
- Variegation fading: common in variegated forms.
Can Grow Lights for Monstera Be Too Strong?
Yes. NC State Extension describes monstera’s natural light as dappled sunlight or partial shade, with direct sun only two to six hours a day, and UMN places it in the medium-light group rather than high light. UMN Extension warns that too much light can scorch and bleach leaves. If leaves look bleached, raise grow lights for monstera or shorten the schedule.
Do Grow Lights for Monstera Help Cuttings Root?
Yes, they give steady light. Iowa State’s DLI table places vegetative cuttings in the same medium-light band, 6 to 10 mol/m²/day, as foliage houseplants. That means the grow lights for monstera that keep the mother plant healthy can also support cuttings rooting in water or moss nearby. NC State describes monstera as a rapid-growing climber, so trimmed stems are common.
Is Monstera Safe Around Pets Under Grow Lights?
Keep it out of reach. NC State Extension lists monstera as poisonous to humans and a problem for cats, dogs and horses, because needle-like calcium oxalate crystals can cause intense burning of the mouth and throat, drooling and vomiting, and sap can irritate skin. Place plant shelves with grow lights where pets cannot chew leaves. Our grow lights for indoor plants guide covers safe shelf setups.
FAQ About Grow Lights for Monstera
How many hours of light does a monstera need?
About 12–14 hours a day under lights, per UMN Extension.
How far should a grow light be from a monstera?
About 12–24 inches (30–61 cm).
What PPFD does a monstera need?
About 150–250 µmol/m²/s, per UMN Extension.
Can a monstera grow without a window?
Yes, with grow lights giving 6–10 mol/m²/day.
Why is my monstera leggy?
It needs more light; move the light closer.
Are LED grow lights good for monstera?
Yes; UMN calls LEDs efficient and long-lasting.
Sources
- University of Minnesota Extension — Lighting for Indoor Plants
- Iowa State University Extension — Important Considerations for Providing Supplemental Light to Indoor Plants
- Iowa State University Extension — Growing Indoor Plants Under Supplemental Lights
- NC State Extension Plant Toolbox — Monstera deliciosa
- Photo credits (Wikimedia Commons, edited with titles): New Monstera Deliciosa Leaf by Kittykittymaomao (CC BY-SA 4.0); White Full-Spectrum LED Aspect Grow Light by Robert Bolen via Soltech Solutions (CC BY-SA 4.0); Indoor Monstera deliciosa by kallerna (CC BY-SA 4.0)