Garden Blog - Top Tropicals

Date: 2 Mar 2026

😼😺 The Story Behind Smokey and Sunshine 🐾

Smokey and Sunshine in office presentation about Cherry of the Rio
Grande freeze survival, with Sunshine pointing at polar bear and penguin
marketing poster, coffee and donuts on table, tropical plants on shelves in
background.

Sunshine: You know, February 27 was International Polar Bear Day. I just learned about it and got a brilliant marketing idea. Cherry of the Rio Grande survived 25F. With wind. Real wind. That means we go north. Let them taste this magic. I even have a donut recipe with the fruit. It’s a bomb, Smokey. We expand. Trust me. Finally you can afford that new watering timer.

Smokey: Not so fast, genius. Twenty five degrees is not the North Pole. And polar bears and penguins do not share zip codes.

Sunshine: You always pour cold water on my brilliance. Fine. Where do we start?

Smokey: Well, first you go talk to Tatiana. She graduated from the Geography Department. She can explain climate zones. Cherry of the Rio Grande can grow in North Florida, Texas, and similar climates. Let’s master that before we conquer Arctic.

Sunshine: So… Phase One: Geography?

Smokey: Exactly.

Some stories are easier to tell with a little humor. Smokey and Sunshine were never just mascots. They represent the two forces behind every decision we make here: bold ideas and careful reality. One dreams big. The other checks the climate zone map. Together, they remind us that growing plants is part science, part optimism, and always personal. If you have ever wondered why they keep appearing in our newsletters, you can read their full story on the Smokey and Sunshine page. They have been with us longer than most people realize.

🐾 Learn the Story of Smoky and Sunshine

Freeze Testing of Grumichama and Cherry of Rio Grande 🍒❄️

Eugenia brasiliensis - Grumichama tree flowering and fruiting

When temperatures dropped to 25F, with wind chill near 14F, winter made it clear which tropical trees were truly resilient. Some plants burned back. Tender growth collapsed. But our established Eugenia cherries stood steady. Leaves held. Branches stayed flexible. The canopy remained intact.

Cherry of the Rio Grande (Eugenia aggregata) and Grumichama (Eugenia brasiliensis) are among the most cold-hardy tropical cherries for Southern gardens. Both are native to Brazil and thrive in USDA Zones 9b–11, and even protected 9a sites.

Cherry of the Rio Grande produces dark ruby fruit that ripens almost black, with a rich, full cherry flavor. It flowers early in spring and can fruit well into summer. Mature trees can tolerate brief drops into the low 20s once established. Trees typically grow 8 to 15 feet tall, remain naturally compact, and often begin fruiting within 2 to 3 years.

Grumichama is an evergreen tree known for both beauty and productivity. In spring, it covers itself in white starburst flowers that attract pollinators. Within about four weeks, glossy purple-black fruit develops. Established trees tolerate temperatures into the upper 20s and grow well in the ground or in 5–10 gallon containers. Mature trees can produce hundreds of fruits per season.

Across the Eugenia group, strengths are consistent: early bearing, compact growth, heat tolerance, light freeze endurance, and low pest pressure. They are adaptable to different soils, need modest water once established, and perform in full sun or partial shade. Birds enjoy the fruit, but there is usually plenty to share.

Nutritionally, Eugenia cherries provide Vitamin C, fiber, antioxidants, and notable Vitamin A that supports eye health. They offer sweetness with real dietary value.

In the kitchen, they are simple and rewarding. Cherry of the Rio Grande makes an easy compote. Simmer the fruit with a small amount of water until soft, mash lightly, and spoon over pancakes or warm bread. Grumichama turns into a deep red jam with sugar and lime, or can be blended into a bright spoon drizzle over vanilla ice cream.

Even when not fruiting, both trees remain attractive year-round with glossy evergreen foliage and clean structure. They fit well into edible landscapes, small yards, and container gardens.

Winter will return. The difference lies in planting fruit trees that can handle heat, humidity, and the occasional cold snap. If you are building a food forest for lasting harvests, cold-hardy tropical cherries like Cherry of the Rio Grande and Grumichama deserve a place in your garden.

Ripe Grumichama (Eugenia brasiliensis) fruits developing on the tree, turning deep red to nearly black when fully mature.

Eugenia aggregata (cv. Calycina), Cherry of the Rio Grande

🛒 Plant hardy Eugenia cherries

Date: 25 Feb 2024

Avocado pollinating and crops

Photo above: Avocado Joey - very buttery fruit, cold hardy variety.

Q: I bought an anise leaf-scented avocado from you, and it is finally quite large and doing great. I live in California, the coldest temperatures we seem to get in some winters is around 25 to 28F, and it never lasts long. The tree might get a bit of frost nipping on the new growth, but it has done very well. It has flowered profusely for the last two years but hasn't set any fruit. What variety you might recommend to help with pollinating?

A: We are glad your avocado is doing great. Anise is one of our favorite varieties, with the wonderful smell of leaves and tasty fruit.

Cold hardiness and flower quality

It is true that cold damage may affect avocado production, especially in setting fruit. To improve the tree's cold hardiness, make sure to provide balanced plant food, especially during the season of active growth. For our avocado trees, we use Sunshine C-Cibus year-round.

If you prefer to use dry (granulated, slow-release) fertilizers, make sure they contain micronutrients, or apply Sunshine Superfood microelement complex once a month.

To improve flower quality (including the ability to set fruit), we recommend a special micronutrient supplement called Sunshine Honey. It contains Boron and Molybdenum - elements that are responsible for setting fruit and for developing fruit (meaning not dropping at the early stage of development).

Cross-pollination and crop

In general, every avocado tree is self-fertile, meaning it can produce some fruit with its own pollen and doesn't necessarily require a second tree for pollination. So even if you don't do anything, sooner or later your tree will set fruit. However, it is also true that the amount of fruit and crop reliability depends on pollination factors. One type of avocado classification is by flowering and pollination behavior - type A or B.

When both types of trees are grown in proximity to each other, their overlapping flowering patterns significantly enhance the chances of cross-pollination. This can lead to improved fruit set and higher yield, making it especially important for commercial production and, to a lesser extent, for home growers.

Therefore, it's advisable to plant different varieties of avocado in your garden - the more, the merrier! The greater the diversity of avocado trees with overlapping flowering periods, the better your crop is likely to be. If you're growing an avocado tree without other avocados nearby, it becomes helpful to have more than one tree with different flowering patterns (A and B) to increase yield in your garden.

Anise Avocado is type B. So to increase your crop, you may consider planting type A variety from the list: Bernecker, Black Prince, Catalina, Choquette, Day, Donnie, Fantastic, Florida Hass, Lila, Loretta, Lula, Mexicola, Mexicola Grande, Red Russell, Reed, Russell, Simmonds, Ulala , Waldin .

To learn more about avocado types, fruit characteristics, cold hardiness and much more, refer to our Avocado Variety Guide - a page with very convenient interactive chart allowing you to quickly sort types of avocado by requirements of your choice (just click on column header to sort data). You may also buy a Book or download a PDF.

Avocado Variety Guide Page

Shop Avocado Trees

Photo above: 15 gal Avocado trees for local pick up. Delivery and installation available!

See 15 gal Avocado varieties available

Date: 13 Apr 2021

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".

Date: 31 Oct 2023

How to establish Tabernaemontana
and get more fragrant blooms

Q: I purchased Tabernaemontana australis from you back in June of this year and it recovered just fine, but the new growth got some chlorosis. Older leaves still look normal. The flowers also look normal but lack fragrance. Since I live up north, I have it in a heated greenhouse for the winter, with a grow light to compensate for the short days. I have it in a 10 inch clay pot in a mix of equal parts standard indoor potting soil, peat moss, and perlite. It gets fed with half strength 10-10-10 about once a month on average. Is there some specific culture that you would recommend for this plant ? I really love it and want it to thrive.

A: Tabernaemontana is a plant that may take some time to establish itself, and leaf chlorosis often becomes a common issue when the root system is not well-established. This symptom is indicative of Iron deficiency, and possibly other micro-element deficiencies, such as Boron or Molybdenum, which become more apparent when the plant receives excessive water. This problem tends to intensify as temperatures drop, particularly when a combination of cool and wet conditions prevails. It's worth noting that your potting mix seems to be appropriate for this plant.

In light of these circumstances, we recommend the following steps:

1) Reduce watering during the cooler season, especially when daylight hours are shorter. Allow the top layer of the soil to dry before watering again.

2) Consider supplementing with microelements using a product like Sunshine Superfood. You can apply this as a foliar spray and mix it with your watering can.

3) Maintain your regular fertilizing program throughout the winter months, but ensure that you use only liquid amino-acid fertilizer, such as Sunshine Megaflor. Follow the instructions on the label for the correct dosage and apply it with each watering, even during the winter. Since you will be reducing amount of water, the amount of fertilizer also will be adjusted accordingly.
Important: do not use any dry fertilizers during winter months (Nov-March).

Regarding the fragrance of the flowers, they typically emit a mild, sweet scent, although it may not be as potent as that of gardenia or jasmine. The strongest aroma usually becomes more prominent during warm (but not excessively hot) and humid conditions, particularly in the morning hours. As the plant grows larger and healthier, the fragrance should become more intense because the flowers produce more essential oil when the plant is robust. You may also apply Sunshine Honey supplement to improve flower quality and fragrance strength.

Shop fragrant plants

Date: 1 Feb 2023

10 secrets of growing a perfect Mango tree

Grow Your Own Food

How to grow a healthy and productive mango tree?

1. Right variety. Select a vigorous grower for in-ground planting, or a condo mango cultivar for growing in container. More info on varieties.
2. Soil must be well-drained. If planted in the ground, plant on a little elevation (see How to plant a tree)
3. Full sun is a must. The more sun, the more flower and fruit.
4. Water. Keep mango tree on a dry side, water young trees regularly but let top of the soil dry before next watering. Mango trees don't like wet feet.
5. Air circulation is important for mango tree to eliminate diseases. Allow enough space from other trees and buildings.
6. Fungicide. Mango leaves are very susceptible do fungal issues, especially in humid climates likÑƒ Florida. Spray fungicide (Copper or similar) according to the label, once a month.
7. Fertilize year around with every watering with liquid fertilizer Sunshine Boosters Mango Tango. Apply Micro-elements once a month and use other good supplements.
8. Shape. Check out Video: - to shape the most vigorous and productive tree.
9. Protect from hard freeze. Mango tree doesn't take freezing temperatures well. In subtropical areas Mango can be protected. Alternatively, it can successfully produce in container, if moved indoors during cold weather.
10. Fruit. Mango tree produces thousands of little flowers, many of them can set fruit. Do not let a small, young tree to keep more than 1-2 fruit, remove extra, to avoid exhaustion. Allow 2-3 years for the tree to establish until it produces a full crop. Apply Sunshine Honey supplement to your tree for sweeter fruit.