Every houseplant care guide lists a light requirement: “bright indirect light,” “medium light,” “low light.” These terms are meant to be helpful, but they’re maddeningly vague because light levels vary enormously depending on your location, window orientation, season, and obstructions outside your window.

“Bright indirect light” in a north-facing apartment in Melbourne in July is completely different from “bright indirect light” in a Queensland sunroom in January. And yet, plant care guides use these terms as if they’re universal.

I’ve been growing indoor plants in a Melbourne apartment with two north-facing windows and one west-facing window for six years. I’ve killed plants by giving them too little light, and I’ve scorched plants by giving them too much. Here’s what these light terms actually mean in practical Melbourne conditions.

Understanding Light Direction in the Southern Hemisphere

In Australia, the sun moves through the northern part of the sky. This is opposite to the Northern Hemisphere, where the sun is in the southern sky. It means window orientation has different characteristics here than in US/European plant care content.

North-facing windows: Receive the most light year-round. Direct sun for several hours daily, especially in summer. This is your brightest exposure. Equivalent to “south-facing” in Northern Hemisphere advice.

East-facing windows: Morning sun, which is gentler than afternoon sun. Bright light for 3-4 hours in the morning, then indirect light for the rest of the day. Good for plants that need bright light but can’t handle intense direct sun.

West-facing windows: Afternoon sun, which is hotter and more intense than morning sun. Can scorch sensitive plants in summer. Similar light intensity to east-facing but harsher.

South-facing windows: Least light. Indirect light only, no direct sun except possibly in the depths of winter when the sun angle is low. This is the “low light” direction in Australia. Equivalent to “north-facing” in Northern Hemisphere advice.

When reading plant care advice from the US or Europe, mentally flip “north” and “south.”

What the Light Terms Mean in Melbourne

Bright indirect light: The plant is near a window (within 1-2 metres) but not receiving direct sun on its leaves. Or it’s in a spot that gets some direct morning sun (1-2 hours) but is shaded the rest of the day.

In Melbourne, this typically means:

• 1-2 metres from a north-facing window, shielded by a sheer curtain or by being off to the side so direct sun doesn’t hit the leaves
• Directly in an east-facing window
• 0.5-1 metre from a west-facing window

Examples of plants that need bright indirect light: Monstera, fiddle leaf fig, most calatheas, most philodendrons, pothos (though it tolerates lower), peace lily (though it tolerates lower).

Medium light: Further from windows, or in rooms with smaller windows. The plant gets ambient daylight but not strong direct or indirect light.

In Melbourne:

• 2-4 metres from a north or west-facing window
• 1-2 metres from a south-facing window
• In a room with windows but not directly near them

Examples: Pothos (tolerates a wide range), snake plant, ZZ plant, Chinese evergreen.

Low light: Away from windows, in rooms with limited natural light, hallways, bathrooms with small windows.

In Melbourne:

• 4+ metres from any window
• Rooms with only south-facing windows and obstructions (buildings/trees) blocking even indirect light

Examples: Snake plant, ZZ plant, cast iron plant (Aspidistra), pothos (barely).

Important caveat: “Low light” doesn’t mean “no light.” There’s no such thing as a houseplant that thrives in a windowless room. “Low light” plants tolerate dim conditions better than others, but they still need some natural light. If you’re relying entirely on artificial light, that’s a different category.

Measuring Light: Lux and Foot-Candles

If you want to stop guessing, use a light meter app on your smartphone (like “Lux Light Meter” for Android or iOS). These aren’t perfectly accurate but they’re close enough for plant care purposes.

Light is measured in lux (metric) or foot-candles (imperial). Here’s how plant light requirements translate:

• Low light: 1,000-2,500 lux (100-250 foot-candles)
• Medium light: 2,500-10,000 lux (250-1,000 foot-candles)
• Bright indirect light: 10,000-20,000 lux (1,000-2,000 foot-candles)
• Direct sun: 30,000-100,000+ lux (3,000-10,000+ foot-candles)

Download a lux meter app, measure the light at different spots in your home at midday, and you’ll immediately understand where your bright and dim zones are.

I measured my apartment and found:

• Directly in my north-facing window at midday in summer: 80,000 lux (direct sun)
• 1 metre back from that window with sheer curtain: 12,000 lux (bright indirect)
• 3 metres back in the same room: 3,000 lux (medium light)
• My south-facing bedroom, 1 metre from window, midday: 1,500 lux (low light)

This explained immediately why my fiddle leaf fig thrived 1 metre from the north window but languished when I moved it to the bedroom.

Seasonal Variation

Light levels in Melbourne vary dramatically by season.

Summer (December-February): Long days, high sun angle, intense light. North-facing windows get 6-8 hours of direct sun. Even south-facing windows get reasonable ambient light.

Winter (June-August): Short days, low sun angle, weak light. North-facing windows still get some direct sun, but it’s less intense and for fewer hours. South-facing windows are gloomy. Plants that were fine in summer may struggle in winter without supplemental light.

I move some of my medium-light-tolerant plants closer to windows in winter to compensate for reduced overall light levels. My pothos moves from 2 metres back to right next to the window in June.

Signs Your Plant Needs More Light

Leggy growth: Stems elongate with large gaps between leaves. The plant is stretching toward light sources. This is called etiolation and it’s the most common sign of insufficient light.

Pale or yellowing leaves (but not dropping): New growth is paler than older growth. The plant can’t produce enough chlorophyll in low light.

Slow or no growth: If your plant hasn’t produced new leaves in months during the growing season (spring/summer), it probably needs more light.

Variegated plants reverting to solid green: Variegation (white, yellow, or pink patterns) requires high light to maintain. In insufficient light, the plant produces more chlorophyll to compensate, and new leaves are greener.

Leaning heavily toward the light source: All plants grow toward light (phototropism), but if your plant is noticeably lopsided, it’s not getting enough light from its current position.

Signs Your Plant Is Getting Too Much Light

Scorched leaves: Brown, crispy patches on leaves, usually on the side facing the window. This is sunburn. Direct sun is too intense.

Faded or bleached leaves: Leaves lose colour and look washed out. Too much light breaks down chlorophyll faster than the plant can replace it.

Wilting despite moist soil: Extreme light increases transpiration (water loss through leaves) faster than roots can replace it, causing temporary wilting even when the soil is wet.

Most houseplants are native to forest understories and aren’t adapted to full direct sun. A few (succulents, cacti, some ficus species) handle it fine, but most common houseplants will scorch if placed in unfiltered sun for extended periods.

Using Artificial Light

In Melbourne’s winter, some spots in your home genuinely don’t get enough natural light for plants. Supplemental grow lights solve this.

LED grow lights are affordable, energy-efficient, and effective. A basic clip-on LED grow light costs $30-50 and provides enough light for 1-2 small plants.

Position the light 15-30cm above the plant. Leave it on for 10-14 hours daily. This simulates the extended daylight plants would receive in brighter seasons or locations.

I use a couple of cheap LED grow lights for plants in my south-facing bedroom during winter. They make the difference between survival and thriving.

Practical Melbourne Light Recommendations

If you have north-facing windows: You’re in good shape. Most houseplants will thrive within 2-3 metres of these windows. Use sheer curtains to diffuse light for sensitive species.

If you have only south-facing windows: Stick to low-light-tolerant plants (snake plant, ZZ plant, pothos) or invest in grow lights for anything more demanding.

If you have east or west-facing windows: These work well for most plants. Put sun-sensitive plants (ferns, calatheas) in east-facing windows where morning sun is gentler. Use west-facing windows for more light-demanding plants, but watch for scorching in summer afternoons.

If you’re in an apartment with limited window access: Focus on proven low-light survivors. Don’t torture yourself trying to keep a fiddle leaf fig alive in a dim hallway. It’s not going to work.

The Bottom Line

“Bright indirect light” and similar terms are useful starting points, but they don’t account for the huge variability in actual light levels. Measure the light in your space, observe how your plants respond, and adjust accordingly.

Melbourne’s winter light levels are challenging for indoor plants. Expect slower growth from June to August, move plants closer to windows, and consider grow lights for species that show clear signs of light starvation.

And remember: most houseplant deaths are from overwatering, not light issues. But getting light right is the second most important factor in keeping plants healthy long-term.