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: 4 Jun 2021

Tahitian Gardenia

Q: I am interested in your Tahitian Gardenia and I would love to try and grow this plant in a large container/fabric pot. The soil here where I live is terrible as it's hard rock, clay, and sand! So I'm not sure if amending the soil would help to plant in the ground? Can you tell me if this will do okay in a container or best in ground? I live here in Las Vegas, NV (zone 9a). Any information would be great to help me make a this decision, I love the selection of cool tropical plants you offer! Also my daughter does Tahitian/Polynesian dance and this would be a cool "topping on the cake" if she could have a live Tiare flower in her performances.

A: Tahitian Gardenia will be doing best if grown in container in your area. In its natural habitat, it grows full sun but also it enjoys mild weather conditions and high air humidity. All gardenias prefer acidic soils. In your area, if planted in the ground, it may be exposed to some harsh conditions: too high temperatures, too hot sun, dry air, and as you mentioned - heavy clay and sandy soil. You can enjoy this plant grown in container, which can be moved as needed away from too much sun during summer months. Use well-drained potting mix. Use plastic pot, do not use fabric or clay pots - soil will dry out too quickly.
Also remember to fertilize this plant on regular basis with a liquid fertilizer SUNSHINE Pikake - Fragrant Flower Booster.
Grow gardenia in full sun or semi-shade during the hottest months. You may spray it with pure water if the air too dry and hot. Enjoy your Tropical Beauty and good luck!

Date: 17 Sep 2021

Hibiscus: TopTropicals' first plant

- September 2001 @ TopTropicals -

Q: I wonder how you started your plant business and what was your first plant?

A: It was 20 years ago this month that we started Top Tropicals Project. No idea where it was going or how to even get "there", just started with the idea of sharing these wonderful creatures we call plants with anyone and everyone who felt the same way.

Believe it or not, the first plant at TopTropicals was a hibiscus. Right before we opened our plant nursery in Florida, we ran into a place called Winn Soldani's FANCY HIBISCUS. The variety of colors inspired us to start our own tropical plant business. We asked the owner Winn Soldani: what plants do you suggest us to grow in Florida? His answer was, "Your plant will find you". Very soon we discovered jasmines, then perfume trees and fruit trees - all those became our specialty. Then very quickly TopTropicals.com turned into a large Plant Mall where you can find every tropical plant you can think of!
But at TopTropicals we still grow hibiscus!

- September 2004 @ TopTropicals -

Hibiscus Plus

Hibiscus is a wonderful plant, considering there are thousands of hybrids with color palettes you can only imagine. Especially interesting are those rare and useful species, yet very easy to grow, such as:
- Salad Hibiscus - Hibiscus furcellatus - yes, used in salads
- Coral Hibiscus with crazy pendant flowers - Hibiscus schizopetalus
- African Cranberry hibiscus that is used for making teas and salads - Hibiscus acetocella
- Cotton Candy Hibiscus mutabilis - the flower changes color, opens as white and turns into bright pink within 3 days, like Yesterday-Today-Tomorrow

Photo above: Hibiscus mutabilis Cotton Candy

Care of Hibiscus and other flowering tropicals

"If your plant isn't flowering, feed it."
- Winn Soldani, Fancy Hibiscus -

Among gardeners, Hibiscus plants have a reputation to have couple maintenance issues:
1) they can get bugsy (because they must be so tasty!)
2) they can get leggy, especially fancy grafted cultivars, and after a while they don't look as perfect as when they came from a nursery.

4 tips for healthy and pretty hibiscus plant

1. Full sun. Essential for profuse flowering and keeps away diseases.
2. Pruning. Keep it pruned and it will get bushy and produce more blooms.
3. Well-drained soil. Hibiscus likes regular watering but hates wet feet.
4. Nutrition program. Hibiscus plants are heavy feeders. But keep in mind that if you just keep pushing granulated plant food, you can over-fertilize the plant. Excessive salts will accumulate in soil and you will end up with a sickly looking plant.

Keys to balanced plant food and bloom booster

1) Use liquid fertilizer, preferably amino acid based, it won't create nutrients lock up
2) Fertilize on regular basis, it's better dilute concentration and add food with every watering
3) Always add micro-elements - they are essential for plant health

If you do this part right, the result will be:
- healthy, green plants, like they just came from a nursery
- reliable blooming circle
- better cold tolerance and disease resistance. Remember that a strong plant will be less stressed and less "bugged" by bugs!

We always suggest Sunshine Boosters - scientifically balanced liquid fertilizers that are amino acid based = they are natural and organic, can be used for both flowers and edibles, and what's most important - year around. They are safe to use virtually with every watering.

This is all you need for healthy plants and lots of flowers!

Date: 1 Jan 2019

Top Tropicals New Year Resolutions

We take this opportunity to extend our grateful thanks to all visitors and friends of our garden and website. The entire Top Tropicals team wishing you a Happy New Year with Happy New Plants!

In 2019, Top Tropicals plans include (but are not limited to):
- improved design of the website, online store and shopping cart
- many new introductions of rare flowering plants including Red Jade Vine, lots of new Adeniums
- rare fruit trees, including Mangosteen, Nutmeg, Clove and more
- extended selection of rare tropical seeds
- many new videos of rare tropical plants
- free and discounted shipping
Stay informed with our Newsletter updates!

New Year Resolutions for Gardeners in 2019

TopTropicals.com

January is the month to plan and dream about your yard and garden. Grow your garden a few steps at a time each year: pick a few resolutions for 2019 and plan accordingly. Next year, a few more, and so on until you build the garden of your dreams.
This winter, resolve to:
- Hang a bird feeder.
- Order seeds of some rare plants so you can have an early start.
- Prune a tree into an espalier - it's a perfect time before Spring.
- Ask your grandparents what they grew in their gardens.
- Build a raised bed for succulents.
- If you live in a warm climate, plant a fruit tree or two.
- Start a compost pile.
- Plant a palm tree.
- Try some plant boosters to improve your plants hardiness.
- Chose Flowering trees, shrubs and vines suitable for areas in your garden that still have room...
- Install a rain barrel.
- Eat outside as often as possible.
- Show a child how to plant a tree.
- Provide a water source for bees and butterflies. They are not only cool, but also pollinators that will help to set fruit and seeds!
- Call TopTropicals for garden advise - what to plant, where to plant, and how not to kill it!
- Plant a berry-bearing tree or shrubs to feed the birds. Mulberry, Blackberry, Tropicals Cherries - are always good choices. They are 15% OFF now, offer expires 1/8/19.
- Rake and save fallen leaves for winter mulch for your garden beds.
- Save seeds from flowers to plant next year.
- Give plants as gifts all year long.

Happy gardening in 2019!