🌡 What Temperature Should My Rex Begonia Be Kept At?

By Kiersten Rankel

Dec 14, 20237 min read

  1. 65°F to 75°F (18°C to 24°C) is the sweet spot for Rex Begonias.
  2. 🌡️ Avoid temperature fluctuations to prevent wilting and leaf discoloration.
  3. Monitor and adjust humidity to complement temperature, preventing stress.

Ideal Temperature Range for Rex Begonia

Rex Begonias are like Goldilocks' porridge—just right when it's not too hot, not too cold. The sweet spot for these leafy show-offs is between 65°F to 75°F (18°C to 24°C). Stray outside this range, and you're asking for trouble, or at least a less-than-thrilled plant.

🔑 Consistency is Key

Keep temperatures steady. Rex Begonias aren't fans of change, especially the rapid kind. Think of them as creatures of habit, thriving on routine. Consistent temperatures mean consistent growth and those lush, vibrant leaves everyone raves about.

Signs of Temperature Stress

Recognizing temperature stress in Rex Begonia is key to keeping your leafy friend happy. Wilting is a telltale sign that your plant feels like it's in a desert or an icebox, rather than its preferred cozy environment.

🌡️ Heat Stress Symptoms

When the mercury rises too high, your Rex Begonia's leaves might start looking like they've been on a diet—thin and crispy. You might also notice the plant getting a bit too eager to reproduce, blooming when it's not supposed to. That's its way of saying, "It's hot, and I'm not a fan!"

❄️ Cold Stress Symptoms

Conversely, if your plant is shivering, the leaves will darken, resembling an overcooked roast, and might even collapse in despair. Brown spots on the leaves are like frostbite for your Begonia, and wet-looking patches are the plant's equivalent of crying icicles.

🛠️ Addressing Temperature Extremes

To combat these extremes, think of your plant like a pet that can't move away from the heater or air conditioner. Relocate it to a spot where it can chill or warm up as needed. Remember, consistency is the name of the game—no sudden temperature changes, please.

🛡️ Proactive Measures

Prevention is better than cure, so keep your Rex Begonia away from drafty windows or hotspots near radiators. And if you're the type to blast the AC or crank up the heat, maybe give your Begonia a little more TLC to help it cope with your indoor climate whims.

Factors Causing Temperature Stress

🌬️ Drafts and Direct Sunlight

Drafts can sneak up like uninvited guests, chilling the Rex Begonia when it least expects it. Place your plant away from windows or doors that are frequently opened, or you'll risk the leaves turning into a sad, droopy mess. Direct sunlight is another deceiver; it promises a tan but delivers a burn. Keep your Rex Begonia in bright, indirect light to avoid the scorched-leaf look.

🔥 Heating and Cooling Sources

Heating sources are like that friend who doesn't know their own strength—a little too close, and your plant gets a fever. Cooling sources, on the other hand, can give your Begonia an unwanted cold shoulder. Maintain a respectful distance from radiators, vents, and air conditioners to keep the temperature just right.

🌡️ Sudden Temperature Fluctuations

Sudden changes in temperature can cause your Rex Begonia to throw a fit. Think of it as a plant's version of going from a sauna straight into an ice bath—not pleasant. Avoid placing your plant near kitchen appliances or exterior doors where temperature swings are more common.

🏡 Indoor and Outdoor Considerations

For indoor plants, monitoring is key. Keep an eye on the thermostat and remember that your comfort zone is likely theirs too. Outdoor plants need a bit more babysitting, especially when the weather decides to be fickle. A quick cover-up or a strategic relocation can save your Begonia from a temperature tantrum.

Addressing Temperature Stress

When your Rex Begonia hits a rough patch with temperature stress, swift action is key. Let's break down the rescue ops.

🌡️ Relocating the Plant

If your plant's throwing a tantrum, it might just be in the wrong spot. Drafts or direct sunlight can turn your Begonia's life into a rollercoaster. Move it to a more stable environment stat.

🌬️ Adjusting Environmental Conditions

Got a heatwave on your hands? Cool it down with some shade or a fan. If it's shivering in the cold, consider cranking up the heat or wrapping it in a plant cozy. Yes, that's a thing.

💊 Remedies for Specific Stress Symptoms

Wilting? Hydrate with care. Leaf drop? Check for drafts and adjust. If the leaves are looking burnt, dial down the light exposure. And remember, a little TLC goes a long way.

💦 Humidity Check

Don't forget, humidity is the sidekick to temperature. If your Begonia's leaves roll up like a burrito, it's begging for moisture. Aim for that sweet spot between Mardi Gras and the Sahara.

🕵️ Monitoring and Prevention

Keep an eye on the thermometer and hygrometer. No fancy gadgets? Your Begonia's body language will spill the beans. Stay vigilant and remember, prevention is better than cure.

Maintaining the Ideal Temperature

Keeping your Rex Begonia comfortable is like finding the sweet spot on your pillow—it's essential for a good night's sleep, or in this case, a thriving plant. Aim for a steady temperature between 65°F to 75°F (18°C to 24°C).

🌡️ Room Thermometers: Your Secret Weapon

Snag a room thermometer to avoid the guesswork. It's the unsung hero that'll help you keep tabs on the climate around your leafy friend.

❄️ Heating and Cooling: The Balancing Act

If your thermostat is more unpredictable than a plot twist in a telenovela, consider adjusting your heating or cooling systems. Just a nudge can make all the difference.

🌬️ Drafty Areas: The Silent Foliage Foe

Avoid drafty spots like you'd avoid spoilers for your favorite show. That means steering clear of open windows, doors, and vents that could usher in sudden temperature changes.

💦 The Humidity Factor

Remember, Rex Begonias don't just enjoy a cozy temperature; they're also humidity enthusiasts. Think about placing them in naturally humid rooms like kitchens or bathrooms, or use a pebble tray or humidifier to keep the air moist.

🌿 Grouping Plants: Strength in Numbers

Grouping plants together can create a microclimate that helps maintain humidity and temperature, like a plant huddle for warmth and companionship.

🍂 Seasonal Tips: Adapting to Change

When seasons change, be prepared to move your plant to a more suitable spot. It might not love the journey, but it'll thank you for the destination.

Remember, your Rex Begonia isn't just another pretty face; it's a living, breathing entity that relies on you to keep its environment just right. So, keep the temperature steady, and your Begonia will reward you with its stunning foliage.

Brief Mention of Humidity

Humidity isn't just a buzzword for meteorologists; Rex Begonias crave it like a cat craves catnip. They're not alone in their love for a moist atmosphere—many tropical plants share this desire. To keep your Rex Begonia from throwing a fit, aim for humidity levels between 50% and 70%.

🌿 Why Humidity Matters

Rex Begonias are like the Goldilocks of the plant world; they want their air just right—not too dry, not too damp. Moderate to high humidity complements their temperature needs and keeps their leaves from throwing a tantrum, turning brown, or getting crispy.

🎯 Achieving the Sweet Spot

So, how do you hit that humidity sweet spot? It's simpler than brewing a perfect cup of coffee. Use a humidifier to dial in the climate, or place a tray of water near your plant. If you're feeling extra, group your plants together to create a mini rainforest vibe—they'll thank you for it.

👀 Watch Out for the Signs

Keep an eye out for drama queen behavior. If your Rex Begonia's leaves start to droop or discolor, they might be staging a protest against the dry air. Don't let them suffer in silence—adjust the humidity and watch them perk up.

Remember, while your Rex Begonia doesn't need a tropical rainstorm indoors, it does appreciate a bit of pampering in the humidity department. Keep it misty, but not soggy, and you'll have a happy plant on your hands.

Ensure your Rex Begonia thrives in comfort 🌡️ with Greg's environment tracking for that ideal 65°F to 75°F range.