Garden Blog - Top Tropicals

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Healthy Plants: Q&A from Mr Booster

How to fertilize Caladiums and other Aroids

By Ed Jones, the Booster Guy

Q: I have a large collection of Aroid plants, different Monsteras, Philodendrons, and several unique varieties of Caladiums. I've been always told that Caladiums should not be fertilized, they don't like it. Is it so?

A: Caladium farmers often say that these plants don't need any additional fertilizer and that they really don't like it... The thing is, caladiums do not like DRY fertilizers, and this is why. Most Aroid plants do not like being watered too often, so dry fertilizers in combination with infrequent watering create excessive salinity for the root system. We have run some tests on the proper fertilizers for caladiums and the best results were performed after using SUNSHINE Robusta. It is amino acid based, so the delicate, large-leaved Aroid plants will not have to work quite so hard to take up the nutrients, and there will be no nutrient lock up in soil. The nutrients are readily available to these plants.
In this article, you will see some test results of caladiums fertilized with SUNSHINE Robusta vs. other brands of fertilizer, with more vigorous growth and larger leaf size occurring after use of Sunshine Robusta...

Caladiums do not have to be just an accent plant. They can also be the focus point of a garden area. It is said that as many as 98% of the world's caladium tubers come from right here in Highlands County, Florida, also home to the Sunshine Boosters manufacturing facility. It is such a big deal that they have a Caladium Festival here each summer. The fields are absolutely stunning in all of their colors. This year the festival runs this weekend, July 23 - July 25.

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Healthy Plants: Q&A from Mr Booster

Pineapple Season is Here!

Pineapple season is here and people often ask, "how do you get them to grow?" Well, the answer is simple really. One method involves cutting the top off a pineapple, prepping it and then planting it. You can find several different ways to do this with a short Google search. Of course the easiest way is to purchase plants that have already been started. You can do that here...

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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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Healthy Plants: Q&A from Mr Booster

How to prevent mango flowers drop

Q:The mango blossoms my tree had in February have blown off due to weather conditions. Do you know what I can do to prevent this from happening again in the future?

A: The only "guarantee" to protect mango flowers from cold weather damage here in Florida is to plant a LATE flowering variety. Generally, mango trees are winter bloomers. Those varieties called "early season" start flowering in January (for example, Nam Doc Mai), and of course very often they get affected by cold, so they drop. Some varieties are so called "late season" - for example Venus. They start flowering in spring when the weather conditions are more favorable.
Another thing that may help you with mango flower drop is applying plant micro-element supplement Sunshine-Honey - it contains Molybdenum and Boron, which help flower and fruit development/strength and prevent their drop.

Read more: Boosting Mango Flowers and Fruit.

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Healthy Plants: Q&A from Mr Booster

Healthy Heliconia Leaves?

Q: I purchased a heliconia from you a couple months ago. The new growth seems to be doing fairly well, however some of the larger leaves are discoloring around the edges then drying up. It's potted in a large pot with potting soil with 3 holes in the bottom to help with drainage in partial sun under a Royal Palm facing northwest. I'm here in Ft Myers. I was previously watering it every other day with your rapid growth fertilizer 1 tbsp per gallon but I have cut that back to once or twice a week. Please let me know your thoughts.

A: Heliconias and Gingers tend to develop dry leaves if grown in pots, especially ceramic or clay pots, because soil in such pots dries out too fast. These dry leaves are not caused by fertilizer, and you can see lots of new healthy green growth. The plant overall seem to be healthy. Continue fertilizing it with liquid Sunshine Robusta that is great for all wide-leaf tropical species, promotes green, lush foliage, and do not use any additional dry fertilizers!
Another suggestion, try to move the plant in more shady spot. Right now it sits in pretty bright light, this may be OK for established plants in the ground, but potted heliconias are very sensitive to hot sun. They get leaf burn easily.

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Healthy Plants: Q&A from Mr Booster

Mango leaves and fertilizing

Q: I received a mango tree we ordered last week (I am in California) and am trying to make sure we take care of it properly. I noticed the corners of some leaves have began drying out. I wanted to see if there was anything else we should be doing or if it is something normal. Overall the tree looks good and the leaves have perked up, but I noticed the dry tips on a handful of leaves. Any help is appreciated! I have not fertilized in the pot yet or applied the mango sunshine booster.

A:Your mango tree looks pretty healthy, and these dry leaf tips may be caused by overall shipping stress. You have dry air in California, and temperatures may be getting up, this may cause additional drying effect. You may start fertilizing with a liquid fertilizer, it will help the plant to get stronger and grow faster - then heat and dry air won't be a problem as soon as the plant becomes better established and hopefully go into a bigger pot soon, or in the ground. Make sure to provide regular water if you have hot dry summers.

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Healthy Plants: Q&A from Mr Booster

Why my Avocado is not flowering?

Q: I have 5 avocados. Three of your cold hardy varieties and two others that have all flowered and set fruit in the past. The last two years including this year, not a single one of them has put out any flowers. I am getting lots of new growth like one would expect on a tree too young to flower. The last two years have been very mild with out any damaging frost where in previous years they lost all their leaves due to frost yet started putting out flowers once winter was over. I am confused because they have all flowered and set fruit previous years. Any ideas would be appreciated.

A: From information you provided, and considering the trees get lots of full sun and cold was not an issue, the only explanation is - lack of nutrients. Here is an example.
Very common situation: you get a small 2-3 ft Avocado or Mango tree in 3 gal pot (or even smaller) from a nursery, full of flowers, and sometimes even a small fruit. You bring it home, plant it in the ground or a bigger pot, it looks happy and grows like crazy. Then next year - oops, no fruit, sometimes not even flowers. What happened?
When the tree lived in a nursery, it was provided with all necessary nutrients through the injector systems (continuous feed); or some nurseries may use top dress smart release on regular schedule. Regardless of fertilizer type, professional grower's set up delivers plant food non-stop, on regular basis, with balanced formulas. Plants are not only growing fast but also ready to produce, since nutrients are always available for a full growth cycle.
When you plant a tree in the ground (or larger pot), conditions change. They may be beneficial for the plant: lots of room for roots to establish, hence lots of vegetative growth. Even if you planted it using good quality fertile soil, this soil may contain mostly nutrients responsible for vegetative growth (branches and leaves). Chances are, your soil may be rich in Nitrogen (good for green growth), but poor in other elements responsible for flowering and fruiting (Phosphorous, Potassium, and many important micro-elements such as Molybdenum, Boron, Iron, etc.). Besides, existing soil gets exhausted quickly, and within a year a two, if you don't add fertilizer, flowering and fruiting may be reduced or even stopped. This is why fertilizing program is very important for fruit trees that are expected to bring a crop soon.

We recommend:

- SUNSHINE C-Cibus - Crop Nutrition Booster - balanced food for fruit trees
- SUNSHINE-Honey - sugar booster - promotes more efficient blossoming and pollination, makes flowers bigger and reduces bud drop
- SUNSHINE SuperFood - for improving fruit trees production

Also keep in mind that some fruit trees have a habit of "skipping" a year and may either produce less or not produce at all every other year. In any case, balanced nutrition program can help to fix this "bad habit".

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Healthy Plants: Q&A from Mr Booster

Ylang Ylang leaves after winter

Q: Hi, I purchased ylang ylang tree a couple of years ago. It's grown quite well in my Greenhouse but I'm having some trouble figuring out if I'm watering it too much not enough or if it has an insect. Can you please take a look at my photos and maybe give me a suggestion of what my problem might be?

A: It is normal for Ylang Ylang tree to get dark spots during winter time. Sometimes Cananga gets whole branches darkened (especially dwarf variety fruiticosa), some may even fall off. But they will be replaced with new growth in Spring-Summer. There is nothing wrong with your plant, it is just a reaction to cold and short day light when you keep this plant indoors. These leaves eventually will fall off as the weather warms up, and will be replaced with a new fresh green growth.
Luckily, Cananga is not susceptible to insects and diseases, but its leaves can look unattractive in winter. Make sure to keep watering at minimum until temperatures raise to 80's.
Start fertilizing as soon as new growth appears. We recommend SUNSHINE Pikake - Fragrant Flower Booster, an ultimate fertilizer for fragrant plants.

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Healthy Plants: Q&A from Mr Booster

Dragon Fruit Magic Tricks

Q: I purchased two sweet red pitayas, that arrived and were planted on May 28, 2020, they were damaged but not serious. my question is this one pitaya is a beautiful green, and has grown 6or 8 " already, the other is bigger and is a grayish green and has not shown any sign of growth at all in six weeks, how long do I wait before I throw it out and buy another?

A: Being a cactus, sometimes Pitaya slows down its growth waiting for more favorable conditions. If one of your plants doesn't show any new growth, just give a it some more time and make sure the plant stays happy. To make pitaya happy, provide the following:
- Water. Unlike most cacti, Pitaya prefers regular watering (but not a wet soil). Make sure it is planted in well-drained media. Do not water again if soil remains moist, wait until it dries out on the surface. During hot weather, Pitaya enjoys light daily watering.
- Light. Unlike most cacti, Pitaya benefits from a filtered light especially while establishing. Try to create a temporary shade over the plant until it starts active growth (if grown in the ground), or move the pot in filtered light. Dull color or dry spots are signs of sun burn. Once the plant shows new growth, you may remove sun protection, or move the pot gradually into the full sun.
- Food. Pitayas are heavy feeders. Use the following fertilizer:
SUNSHINE C-Cibus - Crop Nutrition Booster

Q: I've been growing dragon fruit cuttings from Okinawa, Thailand and Vietnam for several years in pots and cannot get them to fruit. Any fertilizer suggestions? I live in Northern Virginia so I bring the massive pots in the garage under lights and a heater for the winter but back outside once the temperature warms up.

A: There is a little trick to get Dragon fruit to flowering and fruiting. This plant likes flowering when it is attached to a strong support. In commercial plantations, they use special trellises/frames made out of logs, but you can make one yourself using simple materials.
See article: Do-It-Yourself Support Structure for Dragon Fruit.
And of course, don't forget a special plant food for tropical fruit - Sunshine C-Cibus.
You can successfully get your Dragon fruits to fruit in pots, providing bright light in Summer. In Winter, keep the plants on a dry side to give them some rest and a chance to hibernate before the next fruiting season.

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Healthy Plants: Q&A from Mr Booster

How to get Canistel tree to produce
without dropping flowers and fruit

Q: My Canistel tree is 3 1/2 years old and is growing very well, see the picture below. It gets hundreds of pea sized "berries" but then they fall off. No canistel fruit. What's wrong?

A: You have such a nice looking tree, it is a shame you can't get any fruit to ripen.
In our experience, Pouteria trees dropping fruit prematurely is a very common problem. There may be one of the following reasons, or a combination of them:
- Cold winters may affect production, and while Canistel is generally pretty hardy tropical plant that can easily withstand short periods of chill, the fruit may never form properly if it had a cold winter.
- Lack of water. Canistel tree is pretty drought tolerant, but for the proper production cycle it needs regular irrigation. Especially during hot summer.
- The tree may be not strong enough; young trees drop fruit very often when they don't have enough "fruiting energy" built up in their system.
Your tree looks well established and vigorous, however, flower/fruit drop is often a sign of insufficient nutrients of particular kind, usually Boron (B) and/or Molybdenum (Mo): either when a tree is too young and not strong enough, or because of poor soils and lack of necessary elements.

Here is what can be done, considering you live in a warm, frost-free climate.

1. Provide regular fertilizing program. We recommend liquid fertilizers Sunshine Boosters that are safe to use with every watering and year around. It is beneficial to switch plants from traditional "slow-release" fertilizer to the liquid one because it makes a huge difference in plant growth and flower/fruit quality and quantity. See also:
- Why liquid fertilizers are better than dry
- Article about benefits of liquid fertilizers.

Use this plant food for your Canistel tree:
SUNSHINE C-Cibus - Crop Nutrition Booster

2. Apply micro-element remedies that are very effective for improving fruit production, especially when flower or fruit drop occurs:

SUNSHINE Honey - promotes more efficient blossoming and pollination, makes flowers bigger and reduces bud drop.
SUNSHINE SuperFood - improves plant vigor and quality and size of flowers These are all natural, eco-friendly supplements that work great for fruit trees and other edibles.