Garden Blog - Top Tropicals

Date: 6 May 2026

Why your plants need more than NPK

Why your plants need more than NPK

Why your plants need more than NPK



Most fertilizers focus on just three numbers - NPK. But that’s only part of the story. If your plants look okay but not amazing, or grow but don’t really thrive, they’re likely missing the smaller pieces that make a big difference.

☘️ Complete nutrition your plants actually use



Plants need more than just NPK. They also require a full range of microelements like iron, boron, magnesium, calcium, and others. These support photosynthesis, sugar movement, and internal plant processes.

Sunshine Boosters include a full spectrum of these nutrients in balanced amounts. This gives plants complete nutrition without needing extra products for basic care.

☘️ The "Potassium Pump" - how plants move water and energy



Potassium plays a central role in how plants move water and energy. You can think of plant cells as tiny rooms with doors that open and close. Potassium helps control these openings.

Where potassium goes, water follows. This movement fills plant cells, making them firm and strong. It also helps move energy through the plant, supporting fruit development and flowering.

With enough potassium, plants handle drought better, grow stronger, and produce better crops.

☘️ Calcium - the backbone of plant strength



Calcium plays a key role in building strong plant structure and keeping growth stable. It is a major part of cell walls, so it directly affects how firm and healthy the plant tissues are. When calcium is available, plants develop stronger stems, better roots, and more solid fruit with improved shelf life. It also helps regulate how nutrients move inside the plant and supports proper cell division, which is important for new growth, root tips, and developing fruit.

Calcium improves resistance to stress, including heat and disease, and helps prevent common problems like blossom end rot, weak growth points, and poor fruit quality. Because calcium does not move easily inside the plant, a steady and available supply is important throughout the growing cycle.

Calcium cannot be mixed with NPK dry fertilizers. It forms insoluble compounds with phosphates and sulfates, so it has to be dosed separately.

In Sunshine Boosters, Calcium is present along with additives - complex agents and pH regulators. This allows you to dose calcium, sulfates, trace elements and other additives in one solution without fear of fertilizer lockout.

👉 To be continued - next we’ll break down the 10 main Sunshine Boosters formulas and how to match them to your plants. 👉 More...

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Get your plants real food

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Learn more:
What makes Sunshine Boosters different
This changes how you feed your plants
Sunshine Boosters: Complete Plant Nutrition System
Frequently Asked Questions: Plant Nutrition & Fertilizer
Green Magic + SUNSHINE Boosters: A Complete System for Strong Plant Growth
Spring Nutrition Strategy: Is Your Garden Starving?
How to keep your house plants beautiful all year by feeding them right
Why do you need Sunshine Boosters?
Which dry fertilizer to use - slow release or controlled release?
Green Magic effect: before and after
The SECRET growers never tell you: simple trick how to bring plants back to life and keep green
📱 What are Sunshine Boosters

#Discover #Fertilizers #How_to

🟢 Join 👉 TopTropicals

Date: 23 Sep 2020

Fast-fruiting trees?

Photo above: Annona reticulata - Red Custard Apple

Q: More of a question than a review, but a review regarding your catalog, it would be easier for us buyers, if we could search for plants that produce fruit in 2 years or less, I don't have the patience to wait longer than that for fruit. I'm trying to buy for a fairly good sized garden but want some fast growers and fruit produced in 2 yrs. Can you help me out?

A: Fruiting time depends on many factors (established size, growing conditions, fertilizing, and even specific variety), this is why we can not just put a simple icon "will fruit within 2 years".
However, most grafted and air-layered fruit trees, including all Mango, Avocado, Loquat, Sapote, Sapodilla, Lychee/Longan, Peaches and Nectarines - will fruit right away. If you see in our store "grafted" or "air-layered" in plant description - these trees will fruit soon. Some of them already flowering and fruiting.
Some non-grafted trees or seedlings like Annona, Artocarpus (Jackfruit), Eugenia, Guava, Banana, Dragon fruit, Mulberry, Blackberry/Raspberry - will fruit within 3-4 years from seed or even sooner (Banana, Mulberry, Dragon fruit, Blackberry-Raspberry - within a year). Usually it says in description that this plant can produce fruit soon.
Bigger size plants are more established and have more energy to produce, so try to get larger size plants if your budget permits, and especially if you can pick up bigger plants rather than shipping them - obviously, shipping has size limitations.
In addition, all spice trees like Bay Leaf, Bay Rum, Allspice and many more - they will produce spice for you right away, so you don't need to wait at all!
If you have questions about fruiting time on any specific plant you put your eye on, don't hesitate to ask!

Photo above: Pimenta dioica - Allspice

Date: 24 Jun 2018

TopTropicals

URBAN TROPICAL GARDENING:
10 secrets of successful Container Mango growing on a balcony.

Q: I live in Miami in apartment on a second floor, and I have a balcony with SE exposure. I wonder if I can grow a mango tree in a pot? Will it fruit for me? I recently moved to South Florida and I don't know much about tropical plants; but I tasted real fiberless mangos from someone's garden - it was so delicious and different from those in the grocery store. I wonder if I can have a fruiting tree on my balcony? And if yes, how do I plant and take care of it?

A: Yes, you can! Here is what you need to do:
1) Temperature. You are lucky to live in Tropics, keep it on a balcony year round.
2) Light. Position the pot in a spot with the most sun exposure. Mango trees can take filtered light too, but the less sun, the less fruit you will get.
3) Soil and Container. Use only well drained potting mix. Step up the purchased plant into next size container (3 gal into 7 gal, 7 gal into 15 gal). When transplanting, make sure to keep growth point (where roots meet the trunk) just at the top of the soil. Covering base of the trunk with soil may kill the plant.
4) Water. Water daily during hot season, but only if top of soil gets dry. If it still moist, skip that day. Mangoes (unlike Avocados!) prefer to stay on a dry side.
5) Fertilizer. Use balanced fertilizer once a month, 1 tsp per 1 gal of soil. Do not fertilize during fruiting - this may cause fruit cracks.
6) Microelements. Apply SUNSHINE-Superfood once a month. This will help your mango healthy, vigorous, and resistant to diseases. Use SUNSHINE-Honey to make your fruit sweeter.
7) Insect control. Watch for scales and mealybugs, clean with solution of soapy water + vegetable oil (may need to repeat 2-3 times with 10 days interval), or with systemic insecticide like imidacloprid only as needed (if non-harsh treatment didn't help). Most Flea shampoo for dogs contain that chemical, you may try that shampoo solution.
8) Trimming. Once potted, do not remove leaves that are discolored or have spots until new growth appears. Dark dots on mango leaves, especially in humid climate like Florida, may be signs of fungus. Treat with fungicide according to label, and remove only badly damaged leaves. Trim crown as needed after flowering and fruiting (by Fall). Train into a small tree, and you may remove some lower branches eventually.
9) Flower and fruit. Mangoes are winter bloomers with bunches of tiny flowers coming in thousands. Many of them set fruit (if pollinating insects present). Keep in mind that young trees can only bare a few fruit. Normally a tree will drop excessive fruit and keep only a few that it can manage. To save the young tree some energy, remove fruit if too many and leave only 2-3 for the first year. It will pay you next year with more abundant crop.
10) Variety. Last but not least: Choose the right variety for container culture! Pick from "condo" dwarf varieties such as Icecream, Nam Doc Mai, Carrie, Cogshall, Julie, Fairchild, Pickering, Graham, Mallika, and a few others - check out Mango Chart pdf and full list of our Mango varieties.

Date: 4 Jun 2019

Plants for South Texas and other hot states

Q: Pretty much adore last newsletter. Haven't been buying because our weather here in deep south Texas is so bad it is stunting and killing even the Tamaulipan Scrub! Do you have a cure for that? :) I have every expectation the new grafted Plumeria I purchased from you last year will bloom soon. One of my favorite plants. Thanks again and keep up the good works.

A: Yes, there is a "cure" - using biostimulants that improve drought- and heat- resistance (SUNSHINE boosters), plus the right plant selection. In fact, there is a large number of tropical rare plants that can be successfully grown in hot climates like yours. One of our partners lives in hot and dry Arizona area and has an amazing tropical garden that includes many fruit trees (Mango, Persimmons, Pomegranates, Loquats, etc). Here you can see a few pics from his garden.
Your choice is absolutely right about plumerias. Other easy plants would be Desert roses - Adeniums, and Fancy Euphorbia millii - all these come in so many varieties of colors and bloom throughout most of the year. Our special recommendations for you would be also:

Bougainvillea Dwarf Pixie
Jasmine sambac
Calliandra selloi Pink Lilian
Dracaena marginata Tricolor - Colorama, Money Tree
Hamelia patens Lime Sizzler - Variegated Fire Bush
Jatropha berlandieri - Buddah Belly
Pedilanthus tithymaloides - Devils Backbone
Trachelospermum asiaticum Mandaianum - Dwarf Confederate Jasmine

See full list of more plants that are suitable for hot and dry landscapes.

Apply fertilizers, miscroelements, and plant stimulants for improving heat tolerance

Date: 15 Aug 2021

How to grow Cerbera and make it flower

Q: I purchased Cerbera manghas - Enchanted Incense a year ago. As you see from the photo, it's doing great however, no blooms. I fertilize properly and very often and use worm castings for micronutrients. Yes it's not "your" fertilizer, but my plumerias, that are also in pots they are over 5 feet tall and blooming like crazy. I don't see any inflows coming on the Cerbera at all and it is hot and humid here in North Carolina, so it's happy but no sign of blooming. What is your advice?

A: Top Tropicals first brought Cerbera manghas into the US plant market a few years ago, it was recommended to us by our friend, plant taxonomist John Mood who visited Thailand, and among other exotic plants noted this fragrant beauty. Since then we've been successfully growing this plant, it has become one of everybody's favorites.

Generally speaking, Cerbera culture is very similar to Plumerias. These plants are closely related. So if you know how to grow Plumeria, you sure will succeed with Cerbera. Hot and sunny location, well-drained mix, moderate water and bloom boom fertilizer will do the trick. However, we have noticed a few distinctive features that make this plant somewhat challenging at times.

1) Flowers

For past years, we've been studying what triggers its flowering. Sometimes these plants start flowering in 1 gal pot, 1 ft tall. Other times a large developed tree 5-6 ft tall, in 5-7 gal pot, grows beautiful foliage with no signs of flowers. Eventually all of them bloom, no matter how stubborn they are, it's just some individual plants start flowering sooner than others, all grown in the same conditions.
One of our plants in the ground, a well-branched tree, was covered with flowers for a few months, but only on the 3d year after planting. Before that, it only produced a few random blooms. Others bloomed in pots at very young age.
The following factors benefit to Cerbera flowering:
- full sun at least 10 hours a day
- hot temperatures above 85F
- regular water but not heavy rains
- regular fertilizer - Bloom Booster type
- very good drainage and drying out before waterings. If root ball stays moist, the plant may look healthy but won't set flower buds. Keeping on a dry side will encourage flowering. Very similar to Jasmines: they bloom like crazy in April while it's hot and dry in Florida, but once our summer rainy season starts, they reduce blooming.

We highly recommend using Sunshine Megaflor bloom booster or SUNSHINE Pikake in combination with micro-element supplements Sunshine Honey (B-Mo) and Sunshine Superfood (complex micro) that induce flowering. Dry and granulated fertilizers may not supply exactly what a plant needs: certain elements that trigger flowering may be missing. Sunshine Boosters formulas are scientifically balanced, they contain precise amounts of nutrients needed for setting flowers. Besides, excessive salts from regular dry fertilizers create nutrient lock up that may retard plant metabolism; with liquid amino-acid based Sunshine boosters, plants consume the whole menu of elements without building them up in the soil.

2) Fruit

Fruit of Cerbera are very pretty and cover the tree after profuse flowering. To inexperienced eye they may look very much like small mango or avocado fruit - so make sure kids or visitors don't try to eat them! Cerbera seeds are extremely poisonous.

3) Leaves

If you ever grew Passiflora or Milkweed, you know how leaves can be eaten by caterpillars overnight. This may happen to Cerbera too, as we discovered. In Florida environment this exotic plant doesn't have natural predators for protection from certain insect species that may feed on it. So watch out and if noticed first signs of leaves damage - its time for insect control.
Other than that, Cerbera foliage is usually beautiful and colorful, here in Florida it looks much healthier than that of Plumerias often affected with rusty residue during high humidity months.

Hope this helps. The Cerbera fragrance is enchanting, it is worth the efforts and waiting!