Some begonias bloom for show, but this particular variety earns its name from the fine hairs along its leaf edges. The begonia eyelash is a fascinating houseplant that many collectors prize for its textured foliage rather than its flowers. If you have ever seen one up close, you know exactly why it stands out from the crowd.
These delicate hairs give the leaves a soft, almost furry appearance. They catch the light in a way that makes the plant look like it is sparkling. In this guide, you will learn everything about growing, caring for, and propagating this unique plant.
What Is A Begonia Eyelash
The begonia eyelash is not a single species but a common name used for several rhizomatous begonias. Most often, it refers to Begonia bowerae and its many hybrids. These plants are native to the cloud forests of Mexico and Central America.
The “eyelash” part of the name comes from the tiny white hairs that line the leaf margins. These hairs are soft to the touch and look like miniature eyelashes. The leaves themselves are usually green with dark brown or black markings along the veins.
This plant is a rhizomatous begonia, which means it grows from a thick, creeping stem called a rhizome. The rhizome sits on top of the soil and sends up leaves at intervals. It is a compact grower, making it perfect for small spaces and terrariums.
Key Characteristics
- Leaf shape: Asymmetrical, oval to heart-shaped
- Leaf size: 2 to 4 inches long
- Growth habit: Low, spreading, and mounding
- Height: Rarely exceeds 12 inches tall
- Flowers: Small, pink or white, appear in spring
- Light needs: Bright, indirect light
Because of its small size and interesting texture, this plant is a favorite among bonsai enthusiasts and fairy garden builders. It also does very well in a terrarium environment where humidity is high.
Light Requirements For Begonia Eyelash
Getting the light right is the most important part of keeping this plant happy. In its natural habitat, it grows on the forest floor under a canopy of taller plants. This means it receives dappled sunlight, not direct rays.
Indoors, you should place your begonia eyelash in a spot that gets bright but filtered light. An east-facing window is ideal because it provides gentle morning sun. A north-facing window can work too, but the plant may grow slower.
If you only have a south or west window, do not put the plant directly on the sill. The intense afternoon sun will scorch the leaves and cause the edges to turn brown. Instead, set the pot a few feet back from the window or use a sheer curtain to filter the light.
Signs Of Too Much Light
- Leaf edges turn brown and crispy
- Leaf color fades to a pale yellow-green
- The hairs on the leaves become less visible
- Growth slows down significantly
Signs Of Too Little Light
- Leaves become leggy and stretched out
- New growth is smaller than usual
- The dark markings on the leaves fade
- The plant stops producing new leaves
If you notice any of these signs, adjust the plant’s position gradually. Sudden moves can shock the plant and cause leaf drop. Move it a few inches each week until you find the sweet spot.
Watering Your Begonia Eyelash
Watering is where many people go wrong with rhizomatous begonias. These plants have shallow root systems and thick rhizomes that store water. They do not like to sit in soggy soil, but they also do not want to dry out completely.
The best approach is to water thoroughly when the top inch of soil feels dry to the touch. Stick your finger into the soil. If it feels dry at the tip, it is time to water. If it feels damp, wait another day or two.
When you water, do it from the top of the soil. Avoid splashing water on the leaves. The hairy leaves can hold moisture against the leaf surface, which promotes fungal diseases like powdery mildew and botrytis.
Watering Tips
- Use room-temperature water, never ice cold
- Water in the morning so excess moisture evaporates during the day
- Empty the saucer after 30 minutes so the roots do not sit in water
- Reduce watering in the winter when growth slows
- If the rhizome feels soft, you are overwatering
One common mistake is watering on a fixed schedule. Your plant does not care what day of the week it is. It cares about the moisture level in the soil. Always check the soil before reaching for the watering can.
Soil And Potting Mix
The right soil mix is critical for the health of your begonia eyelash. These plants need a mix that holds some moisture but drains quickly. A standard potting soil alone is too heavy and will stay wet for too long.
A good mix for this plant includes about 50% potting soil, 30% perlite, and 20% peat moss or coco coir. The perlite ensures good drainage and air flow to the roots. The peat or coir retains just enough moisture to keep the rhizome happy.
You can also add a handful of orchid bark to the mix. This mimics the chunky, airy soil that these plants naturally grow in. The bark also helps prevent the mix from compacting over time.
Pot Selection
Choose a shallow pot rather than a deep one. The rhizome grows horizontally, not vertically. A deep pot holds too much wet soil, which can lead to root rot. A shallow azalea pot or a bonsai pot works perfectly.
Make sure the pot has at least one drainage hole. This is non-negotiable. A pot without drainage will trap water at the bottom, and your plant will eventually rot.
Humidity And Temperature
Begonia eyelash plants come from cloud forests, which are humid environments. They prefer humidity levels between 50% and 70%. Most homes are much drier, especially in winter when the heating is on.
If your home is dry, you can increase humidity around the plant in several ways. A pebble tray filled with water is a simple solution. Set the pot on top of the pebbles, making sure the bottom of the pot does not touch the water.
A small humidifier near the plant also works well. This is especially useful if you have a collection of tropical plants. Grouping plants together can also raise the local humidity, as the plants release moisture through their leaves.
Temperature Range
- Daytime: 65°F to 75°F (18°C to 24°C)
- Nighttime: 60°F to 65°F (15°C to 18°C)
- Minimum: 55°F (13°C) – below this, the plant suffers
- Avoid cold drafts from windows and doors
Do not place this plant near a heat vent or radiator. The hot, dry air will cause the leaf edges to crisp up. Also, keep it away from air conditioning vents in the summer.
Fertilizing Schedule
Begonia eyelash plants are light feeders. They do not need a lot of fertilizer to thrive. In fact, too much fertilizer can burn the roots and cause leaf damage.
During the growing season, from spring to early fall, feed your plant once a month. Use a balanced, water-soluble fertilizer diluted to half strength. A 10-10-10 or 20-20-20 formula works well.
In the winter, stop fertilizing completely. The plant is resting during this time and does not need extra nutrients. Resuming fertilizer too early can force weak, leggy growth.
Fertilizer Tips
- Always water the plant before fertilizing to prevent root burn
- Use a fertilizer with low nitrogen if you want more flowers
- Flush the soil with plain water every few months to remove salt buildup
- If the leaf tips turn brown, you are likely over-fertilizing
Organic fertilizers like worm castings or compost tea are also excellent choices. They release nutrients slowly and improve the soil structure over time.
Pruning And Maintenance
Pruning is not strictly necessary for this plant, but it helps maintain a neat appearance. Over time, the older leaves will yellow and die off. Removing them keeps the plant looking fresh and directs energy to new growth.
Use clean, sharp scissors or pruning shears. Cut the leaf stem as close to the rhizome as possible. Do not pull the leaf off, as this can damage the rhizome.
You can also prune to shape the plant. If one side is growing more vigorously, trim it back to encourage a more balanced form. This is best done in the spring when the plant is actively growing.
Cleaning The Leaves
Because the leaves are hairy, they tend to collect dust. Dust can block light and reduce the plant’s ability to photosynthesize. Gently wipe the leaves with a soft, dry brush or a makeup brush.
Do not use leaf shine products on this plant. The chemicals can clog the pores and damage the hairs. A soft brush is all you need to keep the leaves looking their best.
Propagation Methods
Propagating your begonia eyelash is a rewarding process. You can create new plants from leaf cuttings, stem cuttings, or by dividing the rhizome. Each method is simple and reliable.
Leaf Cutting Method
- Select a healthy, mature leaf with a long stem
- Cut the leaf off at the base with a sharp knife
- Make small cuts across the main veins on the underside of the leaf
- Place the leaf flat on a moist potting mix, cut side down
- Pin the leaf down with small wire or a pebble
- Cover the pot with a plastic bag to create a greenhouse effect
- Keep in bright, indirect light and keep the soil moist
- New plantlets will form at the cut veins in 4 to 6 weeks
Rhizome Division
This is the easiest method. When the plant outgrows its pot, remove it and look at the rhizome. You will see that it has several growing points. Cut the rhizome into sections, each with at least one leaf and some roots.
Pot each section in its own container with fresh soil. Water lightly and keep in a shaded spot for a week to let the cuts callus over. After that, treat them like mature plants.
Stem Cutting Method
- Cut a 3-inch section of stem with a couple of leaves
- Remove the lower leaves, leaving only the top ones
- Dip the cut end in rooting hormone (optional)
- Insert the cutting into moist perlite or a light mix
- Keep the humidity high with a plastic bag
- Roots should form in 3 to 4 weeks
Propagation is best done in the spring or early summer. The warmer temperatures and longer days encourage faster root development.
Common Pests And Diseases
Like all houseplants, the begonia eyelash can fall victim to pests and diseases. The good news is that with proper care, these problems are rare. Here is what to watch out for.
Common Pests
- Mealybugs: White, cottony masses on stems and leaf undersides
- Spider mites: Tiny webs and stippled, yellowing leaves
- Aphids: Small green or black insects on new growth
- Fungus gnats: Small flying insects in the soil
For mealybugs and aphids, wipe them off with a cotton swab dipped in rubbing alcohol. For spider mites, increase humidity and wash the leaves with a gentle spray of water. Fungus gnats are usually a sign of overwatering; let the soil dry out more between waterings.
Common Diseases
- Powdery mildew: White, powdery spots on leaves
- Botrytis: Gray, fuzzy mold on leaves and flowers
- Root rot: Soft, mushy rhizome and yellowing leaves
Most fungal diseases are caused by too much moisture and poor air circulation. Improve airflow around the plant and avoid wetting the leaves. If you see signs of rot, remove the affected parts immediately and repot in fresh, dry soil.
Begonia Eyelash In Terrariums
This plant is a superstar in terrariums. The high humidity and consistent temperature mimic its natural cloud forest habitat. It will grow happily in a closed terrarium with minimal care.
When planting in a terrarium, use a shallow layer of charcoal at the bottom to keep the soil fresh. Add a layer of sphagnum moss on top of the charcoal, then a layer of potting mix. Place the begonia on top and cover the roots lightly.
One thing to note: terrariums can get too humid for this plant if they are sealed completely. Leave a small opening for air exchange. If you see condensation dripping heavily on the glass, open the lid for a few hours to let it dry out.
Frequently Asked Questions
Is the begonia eyelash plant toxic to pets?
Yes, begonias are toxic to cats and dogs if ingested. The sap contains calcium oxalate crystals, which can cause mouth irritation, drooling, and vomiting. Keep the plant out of reach of curious pets.
Why are the leaves on my begonia eyelash turning brown?
Brown leaf edges usually indicate underwatering, low humidity, or too much direct sun. Check the soil moisture and move the plant to a spot with more indirect light. Increase humidity with a pebble tray.
How often should I repot my begonia eyelash?
These plants prefer to be slightly root-bound. Repot only every 2 to 3 years, or when the rhizome has completely filled the pot. Use a pot that is only one size larger than the current one.
Can I grow begonia eyelash from seed?
Yes, but it is slow and unreliable. The seeds are very fine and need specific conditions to germinate. Most growers prefer leaf cuttings or division because they are faster and produce identical plants.
Why is my begonia eyelash not flowering?
Insufficient light is the most common reason. Move the plant to a brighter spot with indirect light. Also, make sure you are not over-fertilizing with high nitrogen, which promotes leaves over flowers.
Final Care Summary
Caring for a begonia eyelash is not difficult once you understand its basic needs. Give it bright, indirect light, keep the soil slightly moist but not wet, and provide good humidity. That is really all it takes.
This plant rewards you with textured, eye-catching foliage that looks great on a desk, shelf, or in a terrarium. It is a conversation starter and a joy to watch grow.
If you are new to begonias, this is a great variety to start with. It is forgiving, compact, and easy to propagate. Once you have one, you will likely want more.
Remember to check the soil before watering, keep the leaves dry, and give it a little fertilizer during the growing season. Follow these simple steps, and your begonia eyelash will thrive for years to come.
Take a moment to inspect your plant each week. Look for new growth, check for pests, and remove any dead leaves. This regular attention will help you catch problems early and keep your plant in top shape.
Whether you are a seasoned plant collector or a beginner, the begonia eyelash is a wonderful addition to any indoor garden. Its unique appearance and easy care make it a standout choice. Enjoy watching it grow and share cuttings with friends who will appreciate its quirky charm.