Garden Blog - Top Tropicals

Date: 7 Mar 2026

🌞 Spring Nutrition Strategy: How to Identify and Fix Plant Nutrient Starvation

Smokey and Sunshine PeopleCats diagnose a starving coffee plant and revive it using Sunshine Robusta boosters, turning a weak yellow plant into a healthy green coffee tree after one month..
Sunshine: I'm trying to fight rising coffee prices. So I planted my own coffee plant. But it's dying.

Smokey: It's not dying. It's starving. Classic nutrient collapse. Imagine going two days without donuts.

Sunshine: Two days? That's a PeopleCats rights violation. Catstitution First Amendment: food, including donuts, must remain available.

Smokey: Exactly. Plants feel the same. Let's feed it. Sunshine Robusta. Robusta is coffee, you know.

Sunshine: Obviously they named Sunshine Boosters after my charm. And since it's coffee, it should work perfectly.

One month later

Sunshine: Holy whiskers! You're a magician.

Smokey: No magic. Just boosters.

Sunshine: Great. Coffee is on me when this tree starts producing. You bring the donuts.

Read more about Smokey & Sunshine

Fellow gardeners,

Spring has arrived, and plants are coming back to life. New shoots are appearing, fresh leaves are unfolding, and roots are beginning to grow actively again. As plants enter this important stage of the season, they need more than just water to support their growth. Proper nutrition is essential for strong development and healthy plants. SUNSHINE Boosters provide the balanced nutrition plants need to start the growing season strong.

A simple rule we follow in our nursery: new growth responds best to foliar feeding. When nutrients are sprayed directly on the leaves, plants can absorb them quickly and efficiently.

  • Immediate action – nutrients are absorbed through the leaves and start working right away.
  • No delay traveling through soil – plants do not need to wait for nutrients to move down to the roots.
  • Avoids soil lockout – micronutrients can become unavailable in high pH soils, but foliar feeding bypasses this problem.
  • Supports stressed plants – when roots are cold, damaged, or newly transplanted, foliar feeding helps plants recover faster.

However, sometimes plants begin to show visible nutrient deficiencies. Yellow leaves, slow growth, brown leaf edges, or distorted new leaves are often early signs that the plant is missing essential elements needed for healthy development.

Piper sarmentosum Vietnamese pepper plants comparison with fertilizer on the left and without fertilizer on the right

Piper sarmentosum - Vietnamese Pepper - with fertilizer (left) and without (right)

These symptoms are especially common in container plants, where nutrients can be quickly depleted or become unavailable due to soil pH and watering conditions.

Use the quick reference table below to identify common nutrient-related symptoms and the recommended SUNSHINE solution to correct them.

Symptom you see What to do
Pale leaves, slow growth, weak new shoots
(often nitrogen related) 		Spray SUNSHINE Robusta to stimulate strong vegetative growth.
Brown leaf edges or weak plant vigor
(often potassium related) 		Apply SUNSHINE Robusta to restore nutrient balance.
Yellow leaves with green veins
(iron or manganese deficiency) 		Apply SUNSHINE Superfood to correct micronutrient deficiency.
Small distorted leaves or poor flowering
(zinc or boron deficiency) 		Use SUNSHINE Superfood during active growth period.

🌿Foliar Feeding: How Much and How Often

For most plants, foliar feeding works best when applied lightly and regularly during active growth.

  • 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.

Coffee plants before and after regular Sunshine Robusta fertilizer applications showing darker leaves and stronger growth

Coffee plants before and after regular Sunshine Robusta applications

🛒 Feed your plants

Date: 18 Oct 2019

Using SUNSHINE Complete Nutrition System

For hydroponics and potted plants

Q: I recently bought both the 5ml of the sunshine epi and the 100 ml advanced nutrition kit. I read on the paper for the Epi not to use any other strong fertilizers along with this but I was wondering if it'd be alright to use both this foliar spray and nutrition watering together?

A: All solutions in SUNSHINE Booster Nutrition System (NPK-macro and micro-boosters) are compatible.
The only exception is Sunshine-Epi - brassinosteroid bio-stimulant. Epi should be mixed with distilled water separately from other boosters. The reason is, it is very bio-active, and if mixed with other compounds, oxidizes quickly which may affect its performance.

Sunshine-Epi solution must be prepared using distilled water and applied as foliar spray only (it only works on contact with leaves and not through the root system). Epi shows extremely impressive results when you apply it before the application of other nutrients because it increases plant metabolism; so all boosters become even more effective if you spray Epi the day before.

When using Micro- and Macro-boosters, you may mix all components in one watering can/tank (except for Epi), using regular tap water. Besides watering root ball, the macro-micro solution can be also used for foliar spray. It is optional, as in some circumstances growers prefer to keep leaves dry at all times: to stay away from mold, fungus and other issues caused by the wet environment.

Here is an example of Sunshine Boosters Nutrition System application:
1. Daily watering in one can: NPK 25 ml/gal (one of 5, depending on growth stage) + Constanta 5 ml/gal + Ca-Support 5 ml/gal, mixed in tap water
2. Every 2 weeks: spray Sunshine-Epi 2.5 ml/gal - to boost the immune system and growth rate, mixed in distilled water
3. From daily to every 2 weeks: Sunshine-Power-Si 25 ml/gal to protect from diseases and keep pH at 5.5-6.5. Can be used as often as daily and mixed with a daily watering solution (1)
4. As needed: Sunshine SuperFood and GreenLeaf - for correcting deficiencies. Can be also mixed with the daily solution (1)

Make sure to prepare a solution right before use and do not store solution for more than 1 day. Keep concentrates and solutions protected from bright sunlight.

Here is also advanced information on Sunshine Boosters compatibility.

READ MORE >>>

Date: 15 Jan 2021

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.

Date: 15 Nov 2016

SUNSHINE in a bottle - your help during winter

Q: I have been using your new plant hormone SUNSHINE for plants after shipping, and I must admit it does make a big difference! They recover right away. I order plants online very often, and usually it takes up to a week or more until they start showing new growth. After SUNSHINE treatments, they look fresh within a day or two. My question would be, for improving cold tolerance, what do you recommend? I live in Florida and it is still warm here, should I start spraying my garden now or should I wait until cold spells?

A: SUNSHINE is very effective plant stimulant that helps tropical plants survive different kinds of stress, including cold, heat, drought, low light, etc. At TopTropicals gardens and nursery, we have been using this hormone for many years to protect our plants from unfavorable conditions, and it saved us many rare tender species, and lots of money!
The sooner in Fall you start treatments, the better. Don't wait until cold spell. SUNSHINE works slowly and in very low doses. The mechanism is actually about boosting, building up the plant's own immune system. Low doses once a week, even every other week will work just fine, so you will need very little of the product. For less than $5 you can help expensive rare plants to go through winter painlessly. Recommended application is only 2.5 ml/1 gal of water, to spray every 1-2 weeks throughout winter period.

Start spraying your plants with SUNSHINE now, to help them survive short winter days, build up insect resistance (especially for plants indoors), and what is most important, to remain strong through lower temperatures. These are our suggestions:

- SUNSHINE-T - thermo-protection booster. It is specially formulated for winter protection of tropical plants. To improve cold hardiness even more, spray 1-2 days prior to cold with 5 ml/1 gal solution and after that, continue applications with 2.5 ml/1 gal solution every 10-15 days throughout winter period.
- For large plant collections, and in-ground gardens in subtropical areas, take advantage of very cost effective bulk items 50 ml and 100 ml bottles of SUNSHINE.
- Don't forget that SUNSHINE is only a stimulant, and not a plant food. While regular fertilizer should be avoided during winter months, it is always beneficial to apply microelements through foliar spray. During cooler period, chances of chlorosis increase, because at low temperatures iron is difficult so absorb by roots especially in moist soil, hence iron deficiency! Our new Iron supplement SUNSHINE-Super-Iron microelement booster will help to avoid yellowing leaves and to maintain your plants strong and healthy during slow growth period. Ultra-potent, highly absorbable iron mix, with chelated Iron with DTPA (instead of usual EDTA) that is better soluble in hard water and more effective for chlorosis. This mix contains both EDTA + DTPA chelated iron in higher concentration than regular micro-elements mixes.

See all SUNSHINE booster products in our store. For advanced information on SUNSHINE plant boosters, history of use, formulation, and frequently asked questions, visit our manufacturer's website TTLaboratories.com.

Best plants suitable for containers. Check out our large selection of plants that are easily grown in containers. This week only, 20% off!

Date: 30 Jun 2021

Healthy Plants: Q&A from Mr Booster

Meet our new Booster Guy

Plants need food too! Our line of Complete Plant Nutrition system - Sunshine Boosters - will give your plants exactly what they need, and nothing they don't! The boosters are easy to use, and -

ON SALE NOW with FREE shipping

- as a part of our 4th of July specials!

We have a new team member to help you learn more about Sunshine Boosters and how they can make your plants grow healthy and fast.
Meet Ed Jones - our new Booster Guy! Ed will be your contact for all Sunshine Boosters questions, he will help you with fertilizer product selection and ordering.

Soon we will introduce some new fun stuff... including: new advanced formulas, and cool electronics for ultimate control of your plant collections, gardens, greenhouses, and groves... Stay connected!

MORE ABOUT ED >>

Meet Ed's serious Booster People: Roxy and Delilah

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