🌿 Bring the Jungle Inside: Winter Survival Guide Part 2.Temperature. ❄️

Smokey: Too cold. We need more heaters so the plants feel comfortable.
Sunshine: I feel comfortable.
Smokey: You are not part of my plant collection, but I am glad you are comfortable.

🌡️ TEMPERATURE: THE TROPICAL DORMANCY LINE

In Part 1 (Winter Survival Guide: Temperature) we covered the foundation: light, placement, and acclimation. That is the survival layer.

Most tropicals stop growing below 70 to 75 F. They stay green, but their engine shuts down.

Below 70F:

• Water intake drops.
• Roots slow down.
• Fertilizing becomes risky.
• Root root becomes easy.

If you WANT your plants to grow in winter, you must take care of everything: Warmth, light, humidity, water. It all works together.

• Aim for 75 F with bright light. Water lightly. No fertilizer.
• Watch out for drafts. Cold windows. Door blasts. Garage entryways. Even one gust can trigger leaf drop.
• Vents are the opposite problem: hot, dry, dusty air. That gives you crispy edges and mites.
Root zone temperature matters just as much as room air. Your thermostat may say 72 F, but your pot on a tile floor may be sitting at 55 F. Fix this by elevating pots on boards or stands. Use Styrofoam. Never keep pots directly on cold tile o windowsill
• Extra winter heat: Space heaters are fine if used smartly. Do not blow hot air directly on plants. Keep heaters away from cords, trays, and water. Oil filled radiators are the safest option for plant rooms.
• Use a humidifier if you want growth or want to prevent spider mites. But do not blow mist directly onto leaves. Always place the unit lower than the plant canopy.
• Grouping helps. Put tropical plants close together to share humidity. Do not mix succulents with humidity lovers.
• Cats and dogs love to knock over lights and stands. Secure your fixtures. Trust us.
• Airflow: Light airflow is healthy. Direct fan blast is not. Still, dry corners invite mites.
• A mild night drop is OK. A big one below 55 F will stop growth completely.

A mandevilla thriving indoors with bright pink blooms and glossy green leaves.

☂️ PLACEMENT: MICROCLIMATES RULE EVERYTHING

Indoors is one big tradeoff: light but cold near windows, warm but dim away from them. The winning combo is a warm room with supplemental light.

Best zones to keep plants in winter:

• South or east windows with additional light
• Warm living spaces
• Bright bathrooms for natural humidity

Worst zones to keep plants in winter:

• Behind curtains
• Directly on windowsills
• Near heaters or vents
• Against cold exterior walls
• Dark corners without supplemental lighting

A vigorous indoor philodendron stretching across the window.

💨 ACCLIMATION

Moving a plant from outdoors to indoors is a shock. Light drops. Humidity drops. Airflow stops. Soil cools. Even healthy plants may drop some leaves for a few weeks. That is normal.

Before you bring them inside:

• Rinse foliage to remove dust and pests. We recommend Sunshine NoBug - and organic, safe solution.
• Check for ants.
• Trim weak branches.
• Treat soil if fungus gnats are present.

Try to bring plants inside before the first cold front, not after. If you are reading this too late, do the prep now and expect a little leaf drop.

If you nail light and temperature, winter becomes simple. In the next mail-list we will cover watering, fertilizer timing, humidity, and other indoor tricks that keep tropicals happy till spring. Stay tuned.

Cat Bob is inspecting his indoor garden around the tub with a bright skylight

✔️ WINTER INDOOR FAQ: TEMPERATURE AND PLACEMENT

Q: Why are leaves dropping only on the window side?
A: Cold glass. The room may be warm, but the glass surface can be much colder.

Q: Is a cold room OK for tropicals?
A: They may survive, but they will not grow below about 65F to 75F. When nights stay below 65F for a week, many plants enter dormancy.

Q: My room feels warm. Why is my plant still not growing?
A: Check the soil temperature. Pots on cold tile can be 10 to 20F colder than the air.

Q: Can plants sit directly on the floor?
A: Not on cold tile. Always elevate them on boards, stands, or trays.

Q: Is it OK to keep plants near a heater or vent?
A: No. Vents and heaters blast hot, dry air and cause crispy leaves and mites.

Q: My plant is dropping leaves after coming indoors. Why?
A: Normal acclimation to reduced light and humidity right after the move.

Q: Can I keep plants in a bright bathroom?
A: Yes. Bathrooms can have good humidity. Just keep pots off cold tile.

Q: Do I need a humidifier?
A: Not for survival. Yes if you want better growth and fewer pests like spider mites.

Q: Do I need a grow tent?
A: No. A bright LED plus a warm room is enough for winter holding.

Q: Should I fertilize in winter?
A: Not now. Winter fertilizer rules will be covered in the next mail-list.

Q: Should I water the same as in summer?
A: No. Indoor plants need much less water in winter. Watering rules also coming soon.

🛒 Shop Indoor Garden

📚 Learn more:

• Bring the Jungle Inside: Winter Survival Guide Part 1: Lighting
• SUNSHINE NoBug - Natural Plant Protector
• How to overwinter tropical plants indoors
• Feeding indoor plants
• Overwintering Adeniums outside of tropics

Sunshine: January might feel warm, but its still winter. Wool socks, scarf, hot coffee.
Smokey: You get warm when you work. Plant now so roots are established before spring growth starts.
Sunshine: Alright. Lets see who stays warmer - you digging or me with coffee.

🌴 Why winter planting works in a warm climate

By our plant expert Tatiana Anderson

We are lucky to live in a warm climate. This is how I think about the seasons here. Winter is for roots. Spring is for growth. Summer is for managing heat and water.

So if we want plants that handle summer better, we plant them in the season that gives them the best start. Winter here is comfortable. The soil stays workable. The days are mild. And plants are not being stressed by heat. That is exactly why winter is the best time to plant in Florida and other warm areas.

If we use this season well, plants go into spring already settled instead of trying to catch up. This is what I like to plant now, and why.

🟢 Trees first. Anything that will be in the ground for years. Fruit trees, shade trees, flowering trees. When we plant them in winter, they can focus on roots before the spring growth surge starts. By the time spring arrives, the tree is anchored and ready to grow on top.
Examples: mango, avocado, Eugenia cherries, jackfruit, sapodilla, longan, lychee, canistel.

🟢 Shrubs next. Shrubs establish faster than trees, but winter still gives them an advantage. They settle in quietly before the spring flush and bloom cycles begin. That usually means steadier growth and fewer problems once heat returns.
Examples: gardenia, jasmine, brunfelsia, hibiscus, clerodendrums.

🟢 Vines are often overlooked. Vines want to grow fast when spring starts. If the root system is not ready, you get weak growth and frustration. Planting vines in winter gives them time to build a foundation first, so spring growth has support.
Examples: Rangoon creeper, stephanotis, Petrea, Mexican Flame Vine.

💘Rooted love lasts longer than flowers

Sunshine: Valentine Day soon. We need flowers.
Smokey: Nope. Heart-shaped hoya. Flowers fade. Plants stay.
Sunshine: Alright. One for my Valentine. One for me, with coffee.

💖 Sweetheart Hoya: a Valentine gift that lasts

Sweetheart Hoya (Hoya kerrii) has thick, heart-shaped leaves and a compact form that fits easily on a windowsill, desk, or shelf. It does not need constant attention, bright sun, or frequent watering. In fact, it prefers a lighter touch.

This is a plant that works well indoors, grows slowly, and forgives missed waterings. It is comfortable in normal home conditions and does not require special tools or experience. That makes it a good gift not only for plant lovers, but also for people who have never kept a houseplant before.

Unlike flowers, it does not come with an expiration date. It becomes part of daily life and stays there quietly, doing its job. Over time, it feels less like a purchase and more like something chosen with intention.

For Valentines Day, Sweetheart Hoya is a simple, lasting way to give something real.

Sweetheart Hoya care: quick how-to

• Light: Bright window light is ideal. Avoid harsh, hot direct sun.
• Water: Let the potting mix dry between waterings. When you water, water thoroughly, then let it drain.
• Feeding: Light feeding during active growth helps. A balanced fertilizer like Sunshine™ Robusta keeps growth steady and leaves healthy.
• Pace: Slow-growing and patient. Do not overwater or overpot.

❓Sweetheart Hoya: quick FAQ

• Is it good for beginners? Yes. It is forgiving and does not need constant attention.
• Can it live indoors year-round? Yes, in bright indoor light and normal home conditions.
• Does it need flowers to be special? No. The heart-shaped leaves are the main feature.
• Learn more: What is the best Valentines Day gift that actually lasts?