Garden Blog - Top Tropicals

Date: 26 Oct 2018

Improving cold hardiness before winter: fertilizer and micro-elements

TopTropicals.com

Q: I live in New Jersey and it is getting cool here, with temperatures in the upper 40s, but my tropical plant collection is in a heated sunroom (still around 70s). Should I continue fertilizing my plants? And if yes, my second question about deciduous Sugar Apple tree. Should I continue fertilizing it until it drops leaves?

A: First of all, even though you live outside tropical climate, your plants enjoy warm temperatures year round, and can be treated like if they were in a Southern garden.
Plant nutrients, both macro-elements (regular fertilizer) and micro-elements (such as iron, manganese, magnesium, copper, and other elements) play an important role not only in overall plant health but also in plant hardiness.
The rule of thumb is, even in warm climates we cut off any fertilizer by the end of October. You still have time for the last treatment this year (next will be in March, or when your plants start showing new growth). You may apply just a bit of slow-release granulated fertilizer, or water-soluble by foliar spray, diluted 1/2 of label strength, to all evergreen species in your collection.
The most important application before winter is micro-elements and other plant boosters that will help you plant collection survive winter months with a shorter daylight and cooler temperatures. Now it is a perfect time to make these simple steps:

1) Miscro-element applications, any one of: Superfood, Iron Supplement, Greenleaf.
2) Sunshine-T application: for improving cold hardiness, plus immune system resistance to insects and deceases.
3) Sunshine-Honey application for all fruit trees to encourage bigger and sweeter fruit next year.

Regarding your second question. Deciduous tropical plants like Annonas, Adeniums, Plumerias, etc - do not need regular fertilizer at this time, however, go ahead and apply microelements Superfood complex, as well as Sunshine-Honey, while leaves are still green. These two will give a kick-start to provide better flowering in spring, and production of sweeter fruit later.

Check out SUNSHINE boosters - all with free shipping!

Date: 16 Mar 2026

🌱 💪 Green Magic + SUNSHINE Boosters: A Complete System for Strong Plant Growth

By Tatiana Anderson, Horticulture Expert at Top Tropicals with Smokey & Sunshine help

Nearly  dead  houseplants  (Dracaena,  Syngonium,  and  Spathiphyllum) 
 recovering  and  growing  vigorously  after  treatment  with  Green  Magic 
 fertilizer  and  Sunshine  Robusta  plant 
 booster.

Green Magic recovery test with SUNSHINE Robusta support: Dracaena, Syngonium, and Spathiphyllum revived from severe stress and growing vigorously.

☀️🌱 Sunshine Boosters: Complete Plant Nutrition

Sunshine Boosters provide complete plant nutrition, including Calcium and micronutrients that plants need for strong growth. Because nutrients are delivered in liquid form, plants can absorb them quickly and respond almost immediately.

The Practical Problem

Liquid feeding works well, but it requires frequent application. In real gardens, many growers simply do not have time to add liquid fertilizer with every watering.

Green Magic: The Foundation

Green Magic solves this problem by providing steady background nutrition through controlled-release fertilizer. It feeds plants gradually, so they continue receiving nutrients even between liquid feedings.

Why This Combination Works

Together, this system provides both complete nutrition and steady feeding. Sunshine Boosters supply fast nutrients and Calcium, while Green Magic maintains a stable nutrient supply between feedings.

✍️ How to Feed Your Plants

📅 Step 1 – Start of the Growing Season

  • Apply Green Magic around the root zone every 6 months.

    In ground:
    • Small Shrubs (1–3 feet): Use approximately 1/4 to 1/2 cup per plant
    • Established Trees: Use 1/2 lb to 1 lb of product per 1 inch of trunk diameter.
    • Small In-Ground Ornamentals: A common "spoon" rate is roughly 1 teaspoon per gallon of estimated root volume (or per sq. ft. of surface area).
    • Spread evenly around the dripline. Avoid piling the granules against the base or trunk of the plant. For best results, lightly rake the granules into the top 1–2 inches of soil.
    Container plants:
    • Apply 1 tea spoon per 1 gal of soil (mix in with soil) every 6 months during active growth period, or with every re-potting.
  • Water normally after application.
  • Adjustment for Temperature. Because Green Magic is temperature-controlled, adjust your rate if your local climate is extreme:
    • Cooler Climates (<60°F average): Increase the rate by 20% to ensure enough nutrients are released.
    • Hot Climates (> 80°F average): Decrease the rate by 20% to prevent over-releasing as the heat speeds up the process.

☀️🌿 Step 2 – Active Growing Season

  • Apply Sunshine Boosters during the growing season.
  • Regular feeding (maintenance): Mix with tap water according to the ratio on the label. For SUNSHINE Robusta use 25 ml (5 tsp)per gallon of water and spray leaves every 5-7 days during active growth.
  • Correction feeding ("medicine" dose): if plants show visible nutrient deficiencies, combine SUNSHINE Robusta with SUNSHINE Superfood and spray every 5–7 days until new growth appears healthy. All SUNSHINE Boosters products are compatible and can be mixed with water in the same sprayer.
  • Best time to spray: early morning or evening when temperatures are cooler and leaves can absorb nutrients efficiently.
  • Important: spray both the top and underside of leaves for maximum absorption.

Tacca  plant  (bat  flower)  showing  strong  vegetative  growth  and  flower 
 bud  development  in  the  same  season  after  feeding  with  Green  Magic 
 fertilizer.

Tacca (bat flower) showing vigorous growth and producing flower buds in the same season after feeding with Green Magic.
Swipe left/right to see all data ↔️

📊 Seasonal feeding schedule with Green Magic and Sunshine Boosters.

Season Product Method Goal
Spring (March) Green Magic Soil Surface 6-month steady nutrient base.
Growing Season Sunshine Boosters Foliar (Every 5-7 days) Calcium & Bio-available growth power.
Late Summer Green Magic Soil Surface Replenish foundation for Fall.
Winter Sunshine Epi Foliar/Drench Cold tolerance and shipping recovery.

Quick Dose Reference

  • Green Magic: 1 teaspoon per 1 gallon of soil volume.
  • Sunshine Boosters: 25 ml (5 tsp) per 1 gallon of water.
  • Pro Tip: Always spray in the early morning or late evening to prevent leaf scorch and ensure maximum absorption through the stomata.

❓Frequently Asked Questions: Plant Nutrition & Fertilizer

General Fertilizer Concepts

Why is the "Spring Fertilizer Rush" a problem?
Most gardeners apply a large amount of traditional fertilizer once in March. This creates a "roller coaster" effect where plants get a sudden spike of nutrients followed by weeks of starvation. This leads to inconsistent growth and potential "fertilizer burn."

What is "fertilizer burn"?
Traditional fertilizers are made of soluble salts. When too many salts accumulate around the roots, they actually pull water out of the plant tissues (osmosis), dehydrating the plant and damaging sensitive root tips and leaf edges.

Is there a difference between "Slow-Release" and "Controlled-Release"?
Yes.

  • Slow-Release: Relies on natural factors like moisture and soil microbes to break down. It is often unpredictable.
  • Controlled-Release: Uses engineered polymer membranes (like Polyon) to release nutrients at a specific, predictable rate based primarily on temperature.

Green Magic & Temperature

How does temperature affect my fertilizer?
Most fertilizers are lab-tested at 75°F. In hot climates (90°F+), the nutrients release much faster. A "6-month" fertilizer might only last 3 months in the summer heat.

How should I adjust Green Magic for my local weather?

  • Cooler Climates (<60°F): Increase the application rate by 20%.
  • Hot Climates (> 80°F): Decrease the application rate by 20% to prevent over-releasing.

The Calcium Gap

Why doesn't Green Magic contain Calcium?
Calcium salts are highly soluble and can destabilize the polymer coating used in controlled-release granules. Therefore, most high-quality granules leave Calcium out. You can provide Calcium by using SUNSHINE Boosters

Why is Calcium so important for new growth?
Calcium is the "bone" of the plant, building strong cell walls. Unlike other nutrients, it is immobile—the plant cannot move it from old leaves to new ones. If you don't provide a constant supply, new leaves and fruit will emerge distorted or weak.

Advanced Science & Troubleshooting

What makes Sunshine Boosters "Bioavailable"?
Unlike most liquid fertilizers that use EDTA chelators, Sunshine Boosters are amino-acid based. They use organic acids and glycine to escort minerals into the plant, allowing it to incorporate nutrients into its proteins almost immediately.

Will these fertilizers affect the taste of my fruit?
No. Sunshine Boosters are made from pharmaceutical-grade components and contain no urea or harmful salts, ensuring your harvest (like Mangoes or Avocados) has a pure, natural flavor without a chemical aftertaste.

✨ Green Magic - 15% Off This Week

Give Your Plants a Strong Start This Spring
Green Magic - 15% OFF.

Build the foundation for the entire growing season with a steady, long-lasting nutrient base.

No coupon needed. The discount is automatically applied at checkout.
Offer valid through 03/21/2026. Discount applies to Green Magic products only. Not valid on previous purchases and cannot be combined with other promotions or discounts. Offer subject to change without notice.
Sunshine: So Green Magic feeds the plant for months. Does that mean I can forget about Sunshine Boosters?

Smokey: Not quite. Green Magic is the steady base diet. Sunshine Boosters are the weekly power drink during active growth.

Sunshine: Ah. Like my regular meals and donuts on top.

Smokey: Exactly. Plants eat slowly from Green Magic, and once a week they get a fresh boost.

Sunshine: Sprinkle once, then boosters every week. The plant grows, I drink coffee, and nobody forgets anything important.

Smokey: Except where you left the donuts.

Sunshine: Smokey... nobody forgets donuts. Ever

🛒 Feed your plants

✍️ Learn more about fertilizers

Date: 27 Sep 2024

How to protect Mango Trees from Cold Weather

How to protect Mango Trees from Cold Weather



🌞 Mango trees love warm weather. They grow best in temperatures between 70F to 100F.

📍 Cold weather can be harmful to mango trees: when the temperature drops below freezing, trees can get damaged. Frost can hurt young leaves and flowers, reducing the amount of fruit.

💬 Ways to protect mango trees from cold


  • 🔹 Right location: Plant in sunny areas with protection from cold winds.

  • 🔹 Cover them up: Use blankets or frost cloth to protect young trees.

  • 🔹 Add mulch: Helps keep the roots warm during cold weather.

  • 🔹 Move potted trees: Bring them inside when it gets too cold.

  • 🔹 Use Sunshine Boosters to improve tree hardiness


Fertilized mango trees are stronger and more resilient.
  • They grow faster and have better root systems, making them more hardy against cold weather.
  • Sunshine Boosters provide the essential nutrients needed for strength and vigor, helping plants recover faster from cold damage.


🥭 Sunshine Boosters "Mango Tango" makes mango trees stronger and more resistant to cold. A well-fed tree can survive cold better and produce more fruit. With Sunshine Boosters, you ensure your mango trees stay healthy, even in chilly weather!

📚 Learn more from the articles:


Mango trees and how to deal with cold weather
How to fertilize your Mango trees

📸 See photo in the next post👇

🛒 Shop Sunshine Boosters

#Fertilizers #Mango

🔴 Join 👉 TopTropicals

Date: 22 Oct 2025

💞 Cassia or Bauhinia?

Collage  of  Cassia  and  Senna  flowering  trees:
1  –  Cassia  bicapsularis  (Butterfly  Bush),
2  –  Cassia  x  natalensis  (Rainbow  Cassia),
3  –  Cassia  grandis  (Red  Cassia),
4  –  Cassia  didymobotrya  (Popcorn  Cassia),  similar  to  Senna  alata 
 (Empress  Candles),
5  –  Cassia  javanica  (Apple  Blossom  Tree),
6  –  Cassia  roxburghii  (Ceylon  Senna),
7  –  Cassia  fistula  (Golden  Shower  Tree),
8  –  Cassia  x  nodosa  (Pink  Shower).

Looking for a small tree that blooms like fireworks but still fits on your patio? We hear this question all the time at Top Tropicals: Cassia or Bauhinia? Both are tropical showstoppers, but they shine in very different ways.

🌞 Cassias: Sunshine Fireworks

Cassia trees are some of the most rewarding tropical bloomers you can grow. Fast-growing, free-flowering, and surprisingly cold-tolerant, they thrive in full sun and summer heat. Their bright clusters come in shades of yellow, orange, pink, red, and even multicolor blends. The famous Rainbow Cassias show swirls of coral, gold, and rose on the same tree, creating a living fireworks display.

For gardeners in warm regions, these trees become spectacular focal points in the landscape. In containers, compact yellow forms like Cassia didymobotrya (Popcorn Cassia) and Senna alata (Empress Candles) stay manageable and bloom freely through summer.

Cassias can also be grown in pots with pruning and patience. Once mature, they reward you with breathtaking color that turns any patio or pool deck into a tropical show. Most showy cassias (numbers correspond to the photos in the collage above):

  1. Cassia bicapsularis (Butterfly Bush) - is a fast-growing, low-maintenance shrub covered in bright yellow, butterfly-like blooms from fall through winter.
  2. Cassia x natalensis (Rainbow Cassia)
  3. Cassia grandis (Red cassia) - a medium size tree having profuse blooms of dark pink to crimson flowers throughout the Spring.
  4. Cassia didymobotrya (Popcorn Cassia), small tree producing golden-yellow flowers with a distinct scent of peanut butter that open from brown buds in late summer and autumn. Similar to Senna alata (Empress Candles)
  5. Cassia roxburghii (Ceylon Senna) - graceful tree with spreading, drooping branches appearing to be overweighed by its wealth of clustering red blossoms.
  6. Cassia x nodosa (Pink Shower) - is a spectacular medium-sized, fast-growing tree with cascading clusters of fragrant pink-and-white appleblossom blooms in spring and summer.
  7. Cassia fistula (Golden Shower) - to many tropical gardeners, the most beautiful of cassias with masses of bright gold flower clusters appear on almost every branch.
  8. Cassia javanica (Apple Blossom) - dazzles with dense clusters of pink-to-white blossoms that change shades as they bloom, creating a spectacular display that lasts for months.
"Cassias love the heat and sunshine," says Tatiana Anderson, Top Tropicals Plant Expert. "They are perfect for anyone who wants big bursts of color and doesn’t mind giving them space and light to grow."

👉 Explore Cassia Trees

Bauhinia Magic: Orchid-Like Blooms in a Compact Size

Collage  of  Bauhinia  orchid  trees:  top  left  –  Bauhinia  acuminata 
 (Dwarf  White  Orchid  Tree),  middle  left  –  Bauhinia  blakeana  (Hong  Kong 
 Orchid  Tree),  bottom  left  –  Bauhinia  monandra  (Napoleon’s  Plume 
 Orchid  Tree),  top  right  –  Bauhinia  madagascariensis  (Red  Dwarf  Orchid 
 Tree),  and  bottom  right  –  Bauhinia  tomentosa  (Yellow  Orchid 
 Tree)

Bauhinia orchid trees: top left – Bauhinia acuminata (Dwarf White Orchid Tree), middle left – Bauhinia blakeana (Hong Kong Orchid Tree), bottom left – Bauhinia monandra (Napoleon’s Plume Orchid Tree), top right – Bauhinia madagascariensis (Red Dwarf Orchid Tree), and bottom right – Bauhinia tomentosa (Yellow Orchid Tree)

Bauhinia trees known as Orchid Trees, bring a touch of tropical luxury to any space. Their butterfly-shaped leaves and orchid-like blossoms appear in shades of red, pink, purple, white, and yellow, often lasting up to ten months a year. Bauhinias are ideal for gardeners who want nonstop color in a manageable size. Most species grow well in large pots and bloom young, often within the first season.

The following compact varieties stay neat and flower almost continuously in warm weather:

The Hong Kong Orchid Tree is especially prized because it is sterile and produces no messy seed pods, keeping patios clean. Grafted Buhinia blakeana trees begin blooming while still small, making them perfect for containers or tight spaces.

"Bauhinias are generous bloomers," Tatiana explains. "They respond beautifully to regular feeding and full sun. If nights turn too cold, just move the pot to a sunny porch - they’ll keep their tropical charm most of the year."

Give them full sun, regular fertilizer, and a well-drained mix such as Sunshine Abundance, and they will reward you with months of vivid blooms. When nights turn too cold, simply move the pot to a sunny porch or bright window. Bauhinias adjust beautifully and keep their tropical grace year after year.

🎥 Watch Short Videos:

💲 Special Offer – 20% off Cassias and Bauhinias!

Get 20% OFF Cassias and Bauhinias with code

RAINBOW2025

Min order $100. Excluding S/H, valid online only, cannot be combined with other offers.

Hurry, offer expires October 30, 2025!

👉 Explore Bauhinias - Orchid Trees

Date: 19 Jul 2019

How to grow Soursop in a pot

Q: Is it possible to grow soursop in a large pot for life?

A: Soursop, or Guanabana - Annona muricata - is actually one of those tropicals fruit trees that can be easily cultivated in a container. Most plants of genus Annona have compact nature, and these fruit trees usually start production at a young age, as early as 3 years from seed. Annona muricata seedlings take a little longer to fruit, this is why we offer grafted trees, which can start producing right away.
We have a very interesting article about growing Soursop in an apartment. The article was written by an indoor gardener who lives in a very small apartment in Moscow, Russia. He grew this tree from seed and after years of cultivation fun, he finally got several large delicious fruit! It is an amazing story. We have it published in our Tropical Treasures magazine, download the whole issue #7, get a hard copy, or you may download PDF file of the single article.

Recommended fertilizers and supplements:

Fruit Festival Plant Food - Super Crop Booster
Mango-Food - Smart Release Fruit Tree Booster
SUNSHINE-Honey - sugar booster