Why are the Leaves on my Monstera Borsigiana Turning Yellow?

Ah, the Monstera Borsigiana—a beloved cousin of the famous Monstera Deliciosa. If you're a plant lover who has one of these beauties at home, you know how rewarding it can be to watch those iconic split leaves unfurl. However, when those leaves start turning yellow, your heart might skip a beat. What's going on, and how can you help your leafy friend?

In this post, we'll explore the various reasons why your Monstera Borsigiana might be showcasing those unwanted yellow hues. From watering mishaps to lighting mistakes, we'll cover it all, so you can bring back the green vibrancy to your plant's foliage. Let's get started!

Understanding Yellow Leaves

First things first, let's talk about what yellow leaves mean. Yellowing, technically known as chlorosis, occurs when the green pigment in the plant leaves fades. This can happen for several reasons, any of which can affect the photosynthesis process—the way your plant converts light into energy.

Think of chlorosis as your plant’s way of waving a tiny white flag, signaling that something isn’t quite right. While a yellow leaf here and there is normal as old leaves die off, a sudden outbreak of yellowing leaves can indicate trouble. The key is to diagnose the problem correctly and quickly so you can take the right steps to remedy it.

Watering Woes

One of the most common culprits behind yellowing leaves is improper watering. Whether it’s too much or too little, water can make or break your plant’s health. So, how do you know if water is the issue?

Overwatering

If you're anything like most plant parents, you've probably loved your plant a little too much with water. Overwatering is the number one cause of yellowing leaves. When a Monstera Borsigiana sits in waterlogged soil, its roots can't access oxygen and start to rot, leading to yellow leaves.

• Feel the soil: Stick your finger about an inch into the soil. If it feels damp, hold off on watering.
• Check the pot: Ensure your pot has drainage holes to prevent water from accumulating at the bottom.
• Look at the roots: If you suspect root rot, gently remove the plant from its pot and inspect the roots. Healthy roots are white, while rotting ones are brown and mushy.

Underwatering

On the flip side, underwatering can also cause those pesky yellow leaves. If your plant is thirsting for water, it can't carry nutrients effectively, leading to chlorosis.

• Check the soil: If it feels bone dry, your plant might need a drink.
• Observe the leaves: Wilting, along with yellowing, can be a sign of underwatering.
• Water thoroughly: Make sure to water until you see it draining from the bottom, ensuring the entire root ball gets moisture.

Lighting Issues

Lighting is another critical factor in maintaining the lush green of your Monstera’s leaves. Not enough light, and your plant may struggle to photosynthesize adequately. Too much, and you might end up with sunburned leaves.

Insufficient Light

Monsteras thrive in bright, indirect light. If they're not getting enough, their leaves might start to yellow as they struggle to perform photosynthesis efficiently.

• Evaluate the placement: Is your Monstera too far from a window? Consider moving it to a brighter spot.
• Observe growth patterns: Leggy growth and smaller leaves can also indicate insufficient light.
• Supplement with artificial light: Especially in winter months, a grow light can help provide the extra boost your plant needs.

Excessive Light

While Monsteras love light, direct sunlight can be harsh. Leaves exposed to too much direct sun may scorch, leading to yellow or brown patches.

• Check leaf position: Are the yellow leaves facing a window with direct sunlight? Consider moving the plant back a bit.
• Use sheer curtains: Diffuse harsh sunlight with curtains, providing a softer light that your Monstera will love.

Nutrient Deficiencies

Like humans, plants need a balanced diet to thrive. Nutrient deficiencies can manifest as yellow leaves, indicating your Monstera might need a little extra nutrition.

Nitrogen Deficiency

Nitrogen is crucial for leaf development, and a lack of it can lead to yellowing as the plant redirects nutrients to newer growth.

• Look for uniform yellowing: Older leaves will typically yellow first while new leaves remain green.
• Consider a fertilizer: A balanced, water-soluble fertilizer can help replenish nitrogen levels.

Iron Deficiency

Iron is another nutrient that, when lacking, leads to chlorosis. Unlike nitrogen deficiency, iron deficiency usually shows up as yellowing between the leaf veins.

• Check new growth: Iron deficiency often affects new leaves first.
• Use chelated iron supplements: These can be added to the soil or applied as a foliar spray.

Pest Problems

Yellowing leaves can also be a sign of unwanted visitors. Pests like spider mites and thrips can sap the life from your plant, leading to those tell-tale yellow patches.

Spider Mites

These tiny pests are hard to spot but leave a distinct pattern of yellow stippling on leaves.

• Inspect the undersides: Use a magnifying glass to look for tiny webbing.
• Shower your plant: A gentle spray can help dislodge spider mites.
• Use an insecticidal soap: This can help manage an infestation.

Thrips

Thrips can cause similar damage, leaving silvery patches or streaks along with yellowing.

• Check for black spots: These are thrips’ excrement and a clear sign of their presence.
• Use sticky traps: These can help catch adult thrips.
• Consider neem oil: It’s an effective, natural pesticide.

Environmental Stress

Changes in your plant's environment can also lead to yellow leaves. Moving a plant to a new location, temperature fluctuations, or drafts can stress your Monstera and cause its leaves to yellow.

Temperature

Monsteras prefer a consistent temperature range. Too much fluctuation can cause stress.

• Keep it cozy: Aim for temperatures between 65°F to 85°F.
• Avoid drafts: Keep your plant away from windows or doors that might cause sudden temperature changes.

Humidity

Monsteras thrive in humid environments. If your home is too dry, it can lead to yellowing leaves.

• Get a humidity tray: Place a tray with water and pebbles under the pot to increase humidity.
• Consider a humidifier: This can help maintain optimal humidity levels, especially in winter.

Pot and Soil Considerations

The type of pot and soil you use can also impact your Monstera's health. Poor soil drainage or an improperly sized pot can lead to yellow leaves.

Soil Quality

Monsteras need well-draining soil. Compact, heavy soil can retain too much water and suffocate roots.

• Use a proper mix: A mix of potting soil, perlite, and orchid bark works well for Monsteras.
• Repot if needed: If the soil has broken down and compacted, consider repotting your plant.

Pot Size

A pot that's too small can restrict root growth, leading to yellowing leaves.

• Check for root-bound plants: If roots are circling around the pot, it's time to repot.
• Choose a slightly larger pot: Aim for one size up, but not too big, as excess soil can hold too much moisture.

Natural Aging Process

Sometimes, yellowing leaves are simply part of the natural aging process. As plants grow, older leaves will yellow and die off to make room for new growth.

It's important to differentiate between a few old leaves yellowing and a widespread issue. If only the oldest leaves are affected, and new growth looks healthy, there's probably no need for concern.

Final Thoughts

In summary, the yellowing of Monstera Borsigiana leaves can stem from various sources: watering errors, lighting issues, nutrient deficiencies, pest problems, environmental stress, and natural aging. Identifying the cause is crucial for effective treatment and ensuring your plant thrives.

At Cafe Planta, we understand how plants can transform your space and bring joy. If you have questions or need plant care tips, feel free to email us or reach out on Instagram. We're here to help you nurture and grow your plant collection with love and care.