❄️Cold Night Survival Guide

Smokey and Sunshine Prepare Plants for the Cold Night.

Smokey: Come on, Sunshine, help me move these plants inside before it gets dark!
Sunshine: I am helping... see? I’m supervising the mango tree.
Smokey: You call that supervising? The frost cloth’s upside down!

When the forecast drops into the 30s, panic is not a plan. This is your simple, clear checklist to protect every tropical in your garden. Think of it as the quick emergency manual that goes hand in hand with the previous cold-weather newsletter.

"We all love our tropical flowers, mangoes, bananas, and rare fruit trees. A single cold night does not have to be a disaster. The key is knowing what to do, when to do it, and what mistakes to avoid." - Tatiana Anderson, Top Tropicals Plant Expert

🌡️ FROST AND FREEZE

A frost and a freeze are not the same. A frost is when you see ice crystals on leaves or grass, while a freeze is when the air temperature drops below 32 F. The tricky part is that you can get frost even when the air is above freezing, and you can have a freeze with no frost at all. It all depends on humidity and the dew point. If the dew point is below freezing, the ground can cool faster than the air, letting frost form even when your thermometer reads 35 or 36 F. And once the air itself drops below 32 F, even for an hour, tender tropicals can be damaged. For plants, a freeze is far more dangerous, because freezing air pulls heat out of stems, branches, and roots. Frost usually burns leaves, but a true freeze can injure wood, kill buds, and damage the entire plant.

Frost on the grass and leaves on Winter morning in Central Florida

WHAT TO DO AND NOT TO DO BEFORE A COLD SNAP

✔️ 5 THINGS TO DO:

1. Water well. Hydrated plants tolerate cold better than dry, stressed ones.
2. Add mulch. A thick layer around the base keeps roots warm.
3. Block the wind. Move pots to a sheltered corner or patio.
4. Cover at night, uncover in the morning. Let plants breathe and get light.
5. Add gentle heat if needed. Non-LED Christmas lights or a small old style 15-20W light can raise temps a few degrees.

❌ 5 THINGS NOT TO DO:

1. Do not prune or trim. Fresh cuts freeze first.
2. Do not overwater. Wet, cold soil invites root rot.
3. Do not let plants dry out either. Wilted plants freeze more easily.
4. Do not use dry fertilizer. Gentle liquid feeds like Sunshine Boosters are safe to use with every watering: its intake naturally slows down as watering decreases.
5. Do not look only at the thermometer. A long, windy night can be worse than a short freeze.

TEMPERATURE ACTION GUIDE (40 to 25 F)

• 40 to 38 F: Move potted plants to shelter, water soil, and cover tender tropicals.
• 37 to 33 F: Use frost cloth and anchor it down so the wind does not lift it.
• 32 to 30 F: Add a heat source like non-LED lights.
• 29 to 25 F: Double-cover sensitive plants, wrap trunks, and protect roots heavily.

COLD TOLERANCE BY PLANT TYPE

Before a cold night, it really helps to know your plant’s exact cold limits. Every species is different, and young plants are always more sensitive than mature ones. Take a few minutes to look up your varieties in our Tropical Plants Encyclopedia — it will tell you the safe temperature range, how much protection each plant needs, and which ones must be covered or moved before the next cold snap hits.

• Bananas: leaf burn below 37 F
• Mango, Annona: hurt around 32 F
• Cold hardy avocados: Mature tree can take about 25 F. Young trees must be protected
• Olives, Citrus, Guava, Jaboticaba: usually OK outside with mulch

QUICK-ACTION TABLE

Before the cold arrives, make yourself a quick list of every plant and what action each one needs. It saves time when temperatures start dropping and keeps you from scrambling in the dark. Check that you have enough frost cloth, blankets, and supplies on hand so you can cover everything without rushing. Planning ahead makes cold nights much less stressful.

• Bring Indoors: Cacao, Bilimbi, Coffee. They need warm, bright light.
• Cover Outdoors: Mango, Jackfruit, Banana, Annona. Use frost cloth, not plastic on leaves.
• Leave Outside: Eugenias, Peaches, Persimmons, Longan, Lychee, Papaya, Citrus, Loquat, Hardy Avocado. Add mulch and monitor overnight lows.

🛒 Check out cold tolerant tropicals

Covering large mango and avocado trees in pots at TopTropicals during cold nights

GADGETS AND TOOLS THAT HELP

• Indoor helpers: LED lights, small heaters, bottom-heat mats, timers.
• Outdoor helpers: frost cloth rolls, mini greenhouses, non-LED Christmas lights or small incandescent lights, smart thermometers.

Always keep electrical safety in mind, especially if you are using extension cords outdoors. Use only weather-rated cords, keep all connections off the ground, and protect plugs from moisture. Make sure heaters and lights are stable, secured, and never touching fabric covers. A few minutes of safety check can prevent a dangerous situation on a cold, wet night.

And if you want to keep plants strong through winter, add Sunshine Boosters to your watering routine. It is gentle, safe in cold weather, and gives plants an extra edge.

AFTER THE COLD PASSES

In the morning, uncover plants. Leaving covers on during the day can trap heat and cook the tender new growth, especially under the sun. The only exception is true frost cloth designed for all-day use, which allows air, light, and moisture to pass through. Regular blankets, sheets, and plastic must come off as soon as the sun rises.

Do not cut anything yet. A plant can look completely dead after a freeze, but many branches are still alive under the bark. Cutting too soon removes wood that would recover on its own. Wait until new growth begins in spring. That is when you can see exactly which branches are truly dead.

Use the scratch test. Gently scratch the bark with your nail or a small knife. If the layer underneath is green, the branch is alive. If it is brown and dry, it is likely dead. But even then, wait until warm weather to be sure, because sometimes only the tips die back while the lower part of the branch survives.

Once the weather stabilizes, resume light feeding. Plants coming out of cold stress need gentle support, not heavy fertilizer. A mild liquid feed like Sunshine Boosters helps them rebuild roots and push new growth without burning tender tissue.

Dwarf Ceiba Pink Princess (Grafted) - a unique compact cultivar covered with pink flowers in Winter. Watch short video: How this breath-taking flowering tree stays so compact.

WHAT NOT TO DO

• Do not prune right after a freeze.
• Do not overwater cold soil.
• Do not fertilize heavily until spring.
• Do not leave covers on in full sun.

CLOSING THOUGHT

Your tropical garden can survive any cold night if you prepare right. Cold snaps always feel stressful in the moment, but once you know your plants, have the right supplies, and follow a simple plan, it becomes routine. A few minutes of preparation before dark can save months of growth and keep your collection healthy all winter.

Frost cloth is the true workhorse of cold protection: it keeps heat in, keeps frost off, and will not suffocate plants the way plastic or blankets can. Having a few rolls ready means you never have to scramble at the last minute. Sunshine Boosters give your plants gentle support during the colder months so they stay strong enough to bounce back quickly when warm weather returns.

A little planning now will pay off in spring, when your mango, banana, citrus, and all your favorite tropicals come back happy and ready to grow.

🛒 Shop Garden Supplies

Add Heat Pack to your plant order

Prepare your plants for Winter with Sunshine Boosters

We usually stop using dry slow-release fertilizers from November to March. However, liquid Sunshine Boosters, which are natural plant food, can be used all year. They help your plants survive winter. When it gets colder, we water less, so the fertilizer decreases too. The plants only use what they need. To learn more about how Sunshine Boosters work and why they're safe and helpful, check out this blog: Using Sunshine Booster during Winter.

Apart from giving your plants nutrients during winter, you also can improve their ability to handle the cold. Try the Sunshine Boosters supplement kit for tropical plants. Follow the schedule and use three different supplements: SUNSHINE Superfood, SUNSHINE Epi, and SUNSHINE-Power-Si. Read more about treatment with Sunshine boosters supplement kit.

Healthy Plants: Q&A from Mr Booster

New Boosters for the New Year!
Sunshine Total Feed: Orchidasm and Citron

How to grow everblooming orchids?

Q: I ended up with a large collection of orchids that I was given as presents... They grow well but unfortunately after the showy blooms were gone, I don't see any more flowers, just green leaves. What do I need to do to make them bloom again? Should I fertilize them with Azalea bloom booster?

A: Orchids culture is different from garden ornamental plants. First big difference, they are epiphytes, growing in a loose bark medium rather than soil, and benefit from daily mist. Second difference is a type of fertilizer. You can not use a regular garden fertilizer on orchids, because they are very sensitive to salts. Orchids need special, acidic type of fertilizer, very mild in action.
Luckily, Sunshine Boosters formulas are exactly what orchids need! They are amino-acid based, have very mild formulas, and do not create nutrient lock up (building up salts is one of the biggest enemies of tender orchids).
A new Sunshine Boosters Orchidasm TotalFeed is scientifically balanced orchid food that contains all necessary nutrients, including micro-elements, for healthy, happy, vigorous orchids. It can be used as often as daily with every foliage spray. From our testing experience, after using Orchidasm Booster, orchids not only got happy and thriving - they also bloom more often - up to several times a year, shooting new flower spikes one after another! (while normal blooming cycle for most orchids is once a year). It gets even better - the flower display lasts twice longer!
To enjoy these beautiful flowers year around - treat them with Love, give them some Orchidasm!

See more information with pictures in Sunshine Boosters Orchid Blog

Secrets of a healthy Citrus tree

Q: We planted several citrus trees in our yard - Meyer Lemon, Grapefruit and Blood Orange. The trees came from the store full of flowers and even had a few fruit, but a year after planting - no more flowers! The old leaves are green, but new growth doesn't look healthy, leaves are yellowish and have spots, maybe eaten by bugs (?), and how do we get them to fruit?

A: Citrus plants are not the easiest trees to grow; they are susceptible to various diseases, pests, and deficiencies, especially in areas with high humidity/rainfall like Florida. Fungi, viruses, leaf minors, chlorosis - this is not a complete list of citrus common problems. In commercial groves, these conditions are kept under control by using harsh chemicals on solid schedule.
For home gardeners, growing citrus trees may become a challenge. Many people don't want to use harsh chemicals on their edibles; and those who do, may not always have time to apply treatments on a professional schedule. So as much as we all love a fresh juicy orange, growing your own may become quite a pain!
Sunshine Citron TotalFeed is your simple, eco-safe solution to a healthy looking, productive citrus tree with organic fruit! Amino-acid based formula provides all necessary elements to strengthen the tree and make it resistant to possible problems.
Did you know that treatment of leaf chlorosis (yellow leaves with dark green veins), commonly treated with iron supplements, in fact requires a complex combination of nutrients - both balanced NPK and micro-elements?
Use Sunshine Citron in combination with Sunshine GreenLeaf and Sunshine SuperFood and never see yellow chlorotic leaves again!
Apply Sunshine Epi on regular basis (every 2 weeks) and help your tree boost its immune system and stay virus-free.
Add Sunshine Honey, and you will have large, juicy fruit that are much sweeter and more flavorful than those from the store! All these boosters are compatible with each other, and perfectly natural. Eat your fruit safely and enjoy...

Read more about treating citrus tree defficiencies in Sunshine Boosters Citrus Blog.

Cold protection for tropical plants

Pushing the limits of tropical gardening

The year is almost over but the winter is not. This Christmas weekend at our Sebring B-farm we had it down to 30F. As a tropical gardener, winter can be challenging, especially if you grow plants outside of tropical zones.

To protect your garden from the cold, consider the following:

1. Monitor freeze watches and be prepared to take action if necessary.
2. Create temporary structures like mini-greenhouses using PVC pipes, carport frames, or bamboo sticks to support covers.
3. Use covers such as frost cloth, cardboard boxes, blankets, and bed sheets.
4. Use Christmas lights and other heating elements, including propane heaters, to keep plants warm.
5. Add a layer of heavy mulch around plant trunks to protect them from the cold.
6. Apply plant boosters that improve cold hardiness, such as Sunshine Epi, Sunshine-Si, and Sunshine Superfood.

At TopTropicals B-Farm, we sprayed our plants with a special cold hardiness treatment Sunshine-Si and covered and wrapped everything we could. We also moved cold sensitive species inside greenhouses. All of our plants are looking great and happy!

Photo above: Mulching mango trunks and using Christmas lights for cold protection

Read more about this special treatment plan: Cold Hardiness Improvement Kit.

Photo above: Temporary wrapping of a section of a greenhouse with a plastic or frost cloth protects from a windchill. It may also win you a few degrees even without a heater. In this particular case, according to our temp sensors, it was 30F outside, and 41F inside this "dome", no heaters used.

Sunshine Boosters:

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