Garden Blog - Top Tropicals

Date: 27 Apr 2020

How to feed a Mango tree...
and to grow a Dwarf Mango

How to fertilize a Mango tree

Q: My mango trees that I bought and planted last august now have fruit. I bought 2 types of fertilizer from you and never used it. Should I use your fertilizer now?

A: It is a perfect time now to fertilize your plants as they start active growth. For mango trees, we recommend liquid fertilizer Sunshine Booster - Mango Tango. It is formulated for Mango trees, especially for container grown. It improves quantity and quality of flowers and ability to set fruit, reduces bud-flower-fruit drop. Can be used as often as with every watering. For best results, use in combination with Sunshine Honey and Sunshine Superfood plant supplements. Its scientifically-balanced stable formula is organic Amino-acid based and has NO EDTA chelators to eliminate nutrients lockup; it does not affect crop taste.
Additionally, you may use slow-release granulated fertilizer Mango-Food once a month during hot season only. Dosage: 1 teaspoon per each gal of soil. Water-soluble fertilizers can be also used, however, those are usually EDTA-chelated which is not as efficient as Amono-acid based Sunshine Boosters and may create nutrients build up, especially if overdosed in containers.
For in-ground mango trees, you may use all the above, and slow-release granulated fertilizer can be applied in larger quantities: spread a handful around the drip line.

Remember that only liquid Sunshine Boosters can be applied year around. With other fertilizers, you need to be careful not to overdose, and apply only during hot weather (when night temperatures are steadily above 65F).

How to grow a Dwarf Mango tree

Q: I received the Ice cream mango tree in great condition (thank you for the ingenious packing job) on Wednesday and have planted it in a pot slightly bigger than the root ball. I plan to grow the tree on my front porch, so how big a container should I ultimately use when the tree outgrows this pot? How big a container does it need to fruit? I hope to keep it around 6-7 feet high, if possible. I live in Hawaii.

A: Ice Cream mango is a perfect variety for container culture, and it should be happy in Hawaii. You did everything right. Keep it in this small pot for now and wait until it starts vigorous growth in Summer. Once it starts growing (and you will notice roots growing too, sometimes they try to grow through the holes in the bottom of the pot), then it's time to step up into a bigger container (7-10 gal). Eventually you may use container size as large as 15 gal. Ice cream mango is slow growing and compact, and you will be able to maintain it under 7 ft with very minimal pruning if any.

Date: 7 Oct 2019

Fertilizing in Winter?

Q: I'm a bit confused about what winter fertilization schedule I should follow in South Florida. For blooming plants, usually, I use a monthly granular bloom booster fertilizer as well as a liquid fertilizer every 10 days or so. Should I continue that schedule in the winter as well? Should I stop fertilizing altogether in the winter? How about fruit trees? What fertilization schedule should I follow in the winter?

A: Here is a general fertilizing schedule for established plants that we follow here in SW Florida.
The rule of thumb is, do not fertilize (with macro- NPK elements) when minimum temperatures drop below 65F and stay at that level for more than 7 days. At this temperature point, most of the tropical and subtropical plants slow down their metabolism and some of them going into dormancy. This means, nutrients are not consumed as much as during active growth period, and built-up nutrient supply within a plant plus whatever is available in the soil is just enough to get by through the winter. So additional fertilizing is not necessary. You may continue micro-element supplements and bio-stimulants throughout the year. In fact, it is highly recommended to do so, to help the plant survive cold spells. These are very effective tropical plant protectors:
SUNSHINE-Epi - Brassinosteroid plant hormone
SUNSHINE-Power-Si - Advanced plant protector with Silicon
SUNSHINE SuperFood - Complex microelement supplement

This rule is applied to both flowering and fruiting plants, in general. However, some species are winter-flowering and winter-fruiting. For those, you can make an exception and provide extra nutrients for flowering and fruiting, as long as the weather stays warm. During cold spells, avoid any NPK fertilizers and use only bio-stimulants and micro-elements. If you apply NPK during cold, it won't be consumed by a plant, build up in the soil, and may create a root burn situation.

In simple words, fertilize from March to October. Give plants some rest from November to February.

Date: 10 Nov 2025

❄️ How to Prepare Your Tropical Garden for Winter

Two cats in a tropical garden at sunset. Smokey, a black-and-white tuxedo cat wearing a wool cap, holds a thermometer while Sunshine, a fluffy orange tabby, sits beside mulch and folded frost cloths surrounded by banana and hibiscus plants.

Smokey and Sunshine Wrap Up the Garden with Frost Cloth Before the Chill.

Smokey: "Thermometer says 45. Time to wrap the bananas!"
Sunshine: "You wrap the bananas. I’ll guard the mulch… from this sunny spot."
Smokey: "Teamwork, Sunshine. Teamwork."

🌡️ Cold nights are coming - but your tropicals do not need to shiver!

Even in sunny Florida and other warm zones, one cold snap can undo months of growth. Preparation is everything. Tropical plants can handle a lot, but they dislike surprises. Let’s make sure your garden stays safe, strong, and happy all winter long.

Tips from Tatiana Anderson, Top Tropicals Plant Expert

👉 Group and Check Your Plants

You already know which plants are in pots and which are in the ground. What matters now is prioritizing by cold sensitivity. Identify the tender tropicals – papaya, banana, plumeria, adenium, heliconia – and decide which ones get covered first when temperatures drop. Keep frost cloths or old sheets near those areas, ready to grab fast. If your garden is large, label protection zones or mark plants that always need extra care. The goal is to have a plan, not a panic, when the cold alert hits.

Once you know your priorities, you can plan the rest of your protection strategy.

👉 Feed and Mulch

Stop using high-nitrogen fertilizers by late fall. They push soft new growth that freezes easily. Add compost around the base of your plants and top with 3 to 4 inches of mulch. Mulch acts like a blanket: it keeps warmth in, protects the roots, and keeps soil moisture steady. Just make sure the soil drains well; cold and soggy soil leads to root rot. In raised beds, check that water flows away easily.

After you feed and mulch, it is time to look at how your local zone changes the game.

👉 Zone-by-Zone Tips

Woman sitting between two large potted tropical plants on a wooden deck in front of a house, preparing to move them indoors for the winter.

Moving Tropical Plants Indoors for Winter Protection

  • Zone 10: You are lucky! This is mostly a maintenance season. Watch for root rot after heavy rain, trim lightly if needed, and protect tender young trees during surprise chills. Keep some frost cloth ready just in case.
  • Zone 9: This is the main action zone. Nights can dip into the 30s. Deep-water your trees once before cold nights to insulate the roots. Apply heavy mulch, and have frost protection ready to go. If you grow tropical fruit like mango or guava, consider wrapping young trunks in burlap or foam pipe insulation.
  • Zone 8: This is where tropical gardening becomes creative. Stick to cold-hardy tropicals such as loquat, guava, or cold-hardy avocado varieties. Use portable greenhouses, wrap trunks, and move smaller plants indoors or to a heated porch when frost threatens.

Now that the garden beds are set, let’s look at your pots and containers – your most mobile plants.

👉 Container and Patio Plants

Potted plants are the easiest to protect but also the quickest to freeze. Start reducing watering now so roots do not stay too wet in cooler weather. Before moving them, check for insects hiding under leaves or in the soil. Group your pots close to a wall for reflected heat and wind protection. If you plan to bring them indoors, do it gradually. Move them closer to the house for a few days before bringing them all the way inside to help them adjust to lower light and humidity.

When the chill starts, many gardeners rush to move everything inside at once – but a smooth transition works much better.

👉 Indoor Plants

When bringing plants inside, give them a good rinse to remove dust and bugs, and flush the soil to wash out salts from summer fertilizing. Keep them separate from your houseplants for a week to make sure no pests come along. Expect some leaf drop – it is normal as they adjust to lower light. Give them bright light near a window, and cut watering by about half until spring. Avoid misting too much; good airflow matters more than humidity during winter.

Many tropicals, like hibiscus, brugmansia, and crotons, may look tired for a while, but they will bounce back quickly once days get longer.

👉 Timing Is Everything

The key is to prepare before the first cold warning. Check your weather app regularly once nights start dropping into the 50s. Keep covers, mulch, and supplies ready so you are not running outside at midnight with a flashlight and a frozen hose. Have your frost cloths labeled by plant group and stored in an easy spot. A little organization now saves a lot of stress later.

Many tropicals, like hibiscus, brugmansia, and crotons, may look tired for a while, but they will bounce back quickly once days get longer.

Remember: the goal is to help your plants rest safely. Many gardeners prune or fertilize too late in the season – we will talk about why that can be risky next week."— says Tatiana Anderson, Top Tropicals Plant Expert

Coming next mail-list: The best gadgets for cold protection (lights, heaters, frost covers) and what NOT to do in winter.

📚 Learn more from Top Tropicals Blog:

Cold protection - winter action for your plant collection

What plants are good to order in Winter?

How to take care of house plants in Winter

How to protect tropical plants in Winter

How to take care of a mango tree in winter

How to protect Avocado from cold

Overwintering Adeniums outside of tropics

Rows of tropical plants in black pots covered with frost cloth and plastic sheeting for winter protection at Top Tropicals nursery.

Protecting Tropical Plants with Frost Covers at Top Tropicals Nursery

Date: 10 Jun 2021

Growing Champaka in Virginia

Q: I purchased a Magnolia champaca 1 gallon a few years ago. It is still growing as I bring it into my greenhouse in the winter. I live in VA. This spring I planted it in the ground hoping it might bloom which it did not. Will it survive our fairly mild winters with several freezing days with some special attention? What would you do?

A: Magnolia champaca is a tropical tree and won't survive winter in VA. It can not take hard freeze. Your only option is, to keep it in a pot and bring inside. If the temperature inside your greenhouse is too low, this may affect the plant's ability to flower. For example, if it stays 35-40F for a whole month - although it is not a hard freeze and the plant may survive, but the duration of the cold period is more critical than the low temperature itself. Champaka can survive a few hours even at upper 20's, but not many days with cool temperatures. The temperature in winter should be maintained at least above 55F during day time (the higher the better) and at least above 45F at night.
If the tree has grown too big, you may trim it. If the root ball is too large, roots can be trimmed too (similar way like they do with bonsai) before repotting. However, trimming must be done either during warm season and active growth, or in Spring, when the tree starts waking up and promotes new growth.
To encourage flowering, start fertilizing your Champaka with a liquid bloom booster - SUNSHINE Pikake - Fragrant Flower Booster. It can be used year round including winter months, and it is safe to apply with every watering. This way you will provide to the tree enough energy for the next flowering season, so flowers can be expected in late Spring - Summer.

Read more about greenhouse growing: Greenhouse in Virginia.

Date: 10 Mar 2021

Healthy Plants: Q&A from Mr Booster

Jasmine Grand Duke flowering

Q: Hey can you help me figure out why my jasmine grand duke supreme is not flowering? Ive had it for almost a year (in NY) and only had 1 flower bloom and that immediately turned brown and died. Since then no flowers have come. The leaves are green and healthy and its growing like crazy but not flowers. Please help me figure this out.

A: For profuse flowering, Jasmine sambac needs 2 things: bright light and special plant food. We have plenty of both here in Florida. If your grow this plant indoors in colder climate, get it to flowering can be a bit tricky.
Your plant grows well overall with lots of vegetative growth, this is a good sign, it means it's healthy, and not being overwatered which is one of the most common problems with Sambacs. You're doing a great job! This jasmine just needs more sun and fertilizer.
Make sure to keep it in the brightest spot of your home. The more hours of light, the better. When night temperatures stay above 65F, it is beneficial to bring the plant outside on a balcony, patio, or in a garden in full sun as a potted specimen (move to bright light gradually). You should give this Jasmine plenty of food with every watering. We recommend SUNSHINE Pikake - Fragrant Flower Booster. This is a natural fertilizer that can be applied to plants year round without risk of burning the roots or nutrient lock up in the soil. It provides all necessary elements for the flowering cycle - just add a bit into watering can, every time you water.

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