Garden Blog - Top Tropicals

Date: 25 May 2026

Why Gardeners Are Secretly Obsessed With This Rare Brazilian Giant Walking Iris

Iris Regina - Neomarica caerulea

🔤 Why Gardeners Are Secretly Obsessed With This Rare Brazilian Giant Walking Iris



Meet Iris Regina - Neomarica caerulea: the rare, salt-tolerant Brazilian walking iris that blooms in under a year and thrives in shady, sandy soil where other tropicals fail.

One look at Iris Regina - and it's easy to see why tropical plant collectors quietly become obsessed with it. It pairs elegant, hand-painted blue-violet flowers with arching, sword-like leaves that instantly give your garden a lush, structural look.
But the real magic of this unusual Brazilian species isn't just its beauty - it's the fact that it thrives exactly where other tropicals fail.

The Plant That Thrives on Neglect (and Salt Air)



Originally discovered growing near the ocean in Brazil, Iris Regina naturally adapted to conditions that would frustrate most gardeners. Thriving in sandy soil, deep shade, and coastal salt spray, this plant is remarkably easygoing. While most flowering tropicals demand rich soil and perfect drainage, Iris Regina handles difficult planting zones with absolute grace.

👉 Quick Care Tip: While it loves moist, well-drained soil, overfeeding is a mistake. Too much fertilizer will give you massive leaves but fewer flowers!

Blooms in Less Than a Year



One of the most surprising traits of Iris Regina is how quickly it matures. Many rare ornamental plants test a gardener's patience for years before ever showing a bud. Fresh seedlings of this species, however, can reach blooming size in less than a year - an absolute rarity for a tropical perennial with such exotic flowers.

The blooms look like a cross between a rare orchid and a delicate iris. While individual flowers are short-lived, mature clumps continuously push out new blooms throughout the warm season, especially when kept evenly moist.

Light and Cold Tolerance: What You Need to Know



· Light: For the best foliage color and maximum blooming power, give it morning sun and afternoon shade. It can handle more sun, but only if you keep up with watering.
· Cold Hardiness: Iris Regina is comfortable down to about 30F. In warmer parts of Florida (Zones 9b-11), it performs beautifully outdoors year-round.
· Cold Climates: If you live in a freeze-prone zone, it makes an exceptional container plant. Just wheel it to safety when a freeze threatens.
Propagation: It's incredibly easy to divide, or you can grow it reliably fast from fresh seed.

25 Years of History: The Top Tropicals Connection



For us at Top Tropicals, Iris Regina isn't just another botanical listing - it carries a piece of our history. This specific variety was introduced by the legendary tropical plant collector Sid Gardino, who named it after his wife, Regina.

Sid and Regina have been longtime friends of Top Tropicals for over a quarter of a century. In fact, some of the very first plants in our nursery’s collection came from them more than 25 years ago. Plants like Iris Regina represent the early, passionate era of Florida plant collecting - treasures shared between friends long before rare plants became viral internet trends.

Today, Iris Regina still feels like a hidden gem compared to flashy orchids or massive aroids. But if you are looking for something elegant, salt-tolerant, and surprisingly easy to grow, this Brazilian walking iris might just become your favorite plant in the garden.

🛒 Get Iris Regina for a low-maintenance, always-blooming showstopper

📚 Learn more:

Walking Iris Plant Facts

Botanical name: Neomarica caerulea
Also known as: Walking Iris, Twelve apostles, Apostle Plant, Iris Regina
USDA Zone: 8 - 11
Highligths Small plant 2-5 ftSemi-shadeShadeFull sunWatering: Regular. Let topsoil dry slightlyBlue, lavender, purple flowersSubtropical plant. Mature plant cold hardy at least to 30s F for a short timeFlood tolerant plantSeaside, salt tolerant plant
Get personalized tips for your region

· Neomarica caerulea - Iris Regina in Plant Encyclopedia
· What flower is perfect for coastal gardens
· What is the best plant for a carefree flower border

#Container_Garden #Shade_Garden #How_to #Discover


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Date: 13 Jul 2024

How to grow everblooming orchids like these?

Sunshine Orchidasm Fertilizer

Sunshine Orchidasm Fertilizer

Orchids in bloom

🌸❓How to grow everblooming orchids like these?

💋Orchids culture is different from garden ornamental plants. They are epiphytes, so you cannot use regular garden fertilizer on orchids, because they are very sensitive to salts.

💋Orchids need a special, acidic type of fertilizer, very mild in action.

💋Sunshine Boosters formula is exactly what orchids need. It is amino-acid based, very mild, and doesn't create nutrient lock up (building up salts is one of the biggest enemies of tender orchids). Sunshine Boosters Orchidasm Complete Feed is scientifically balanced orchid food that contains all necessary nutrients, including micro-elements, for healthy, happy, vigorous orchids.

💋 Sunshine Orchidasm can be used as often as daily with every foliage spray.

💋From our testing experience, after using Orchidasm Booster, orchids not only get 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 beautiful Orchid flowers year around - treat them with Love, give them some Orchidasm!

📚 Learn more: Sunshine Orchidasm

🛒 Order Sunshine Orchidasm

#Fertilizers #How_to #Container_garden

🏵 TopTropicals

Date: 6 Jun 2025

Flower of Happiness and Sunshine

Adenium Sunshine

Adenium Sunshine

Adenium Sunshine

Adenium Sunshine

Adenium Sunshine

Adenium Sunshine

☀️ Flower of Happiness and Sunshine



📸 Photos ofAdenium Sunshine for the previous post 👆

🛒 Shop adeniums

#Nature_Wonders #Container_Garden #Adenium

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Date: 27 Apr 2020

How to feed a Mango tree...
and to grow a Dwarf Mango

How to fertilize a Mango tree

Q: My mango trees that I bought and planted last august now have fruit. I bought 2 types of fertilizer from you and never used it. Should I use your fertilizer now?

A: It is a perfect time now to fertilize your plants as they start active growth. For mango trees, we recommend liquid fertilizer Sunshine Booster - Mango Tango. It is formulated for Mango trees, especially for container grown. It improves quantity and quality of flowers and ability to set fruit, reduces bud-flower-fruit drop. Can be used as often as with every watering. For best results, use in combination with Sunshine Honey and Sunshine Superfood plant supplements. Its scientifically-balanced stable formula is organic Amino-acid based and has NO EDTA chelators to eliminate nutrients lockup; it does not affect crop taste.
Additionally, you may use slow-release granulated fertilizer Mango-Food once a month during hot season only. Dosage: 1 teaspoon per each gal of soil. Water-soluble fertilizers can be also used, however, those are usually EDTA-chelated which is not as efficient as Amono-acid based Sunshine Boosters and may create nutrients build up, especially if overdosed in containers.
For in-ground mango trees, you may use all the above, and slow-release granulated fertilizer can be applied in larger quantities: spread a handful around the drip line.

Remember that only liquid Sunshine Boosters can be applied year around. With other fertilizers, you need to be careful not to overdose, and apply only during hot weather (when night temperatures are steadily above 65F).

How to grow a Dwarf Mango tree

Q: I received the Ice cream mango tree in great condition (thank you for the ingenious packing job) on Wednesday and have planted it in a pot slightly bigger than the root ball. I plan to grow the tree on my front porch, so how big a container should I ultimately use when the tree outgrows this pot? How big a container does it need to fruit? I hope to keep it around 6-7 feet high, if possible. I live in Hawaii.

A: Ice Cream mango is a perfect variety for container culture, and it should be happy in Hawaii. You did everything right. Keep it in this small pot for now and wait until it starts vigorous growth in Summer. Once it starts growing (and you will notice roots growing too, sometimes they try to grow through the holes in the bottom of the pot), then it's time to step up into a bigger container (7-10 gal). Eventually you may use container size as large as 15 gal. Ice cream mango is slow growing and compact, and you will be able to maintain it under 7 ft with very minimal pruning if any.

Date: 16 Nov 2019

When to apply super boost?

Sunshine Boosters: a breakthrough in Winter fertilizing

In the photo: plants are tough survivors. Life can't be stopped even by a brick road!

Q: Just wanted to know best time of day to apply super boost as spray and watering? Only listed to make sure night temp doesn't drop below 65F...

A: As a rule of thumb, plant's needs in fertilizers are very low in the cold season because they consume less nutrients during dormancy. For tropical plants, when minimum temperatures drop below 65F - we stop applications of dry (granulated) fertilizers until spring, to avoid root burn.
Liquid Sunshine Boosters are exceptions from this rule to a certain extent, for 2 reasons:
- they are amino-acid based which means, salts do not build up in the soil, and thus will not burn the roots even with slower plant metabolism.
- concentrations/formulas are mild and designed for as frequent as daily watering

Tips for winter fertilizing:

1) When a plant goes into full dormancy (drops leaves and does not show any new growth), you may stop fertilizing with any Macro NPK products (both dry and liquid)

2) If a plant is evergreen and continues growing during the cooler period, and especially if it is a winter bloomer, mild liquid fertilizers can be applied, depending on the stage of plant development.
Robusta and TotalFeed are used for vegetative growth and pre-flower.
Megaflor and C-Cibus are used for winter flowering/ fruiting plants during the bloom stage.

See full list of liquid boosters

3) Micro-elements can be used all year round for all plants that are not dormant (do not drop leaves)

4) Always use Sunshine-Epi as a foliar spray to activate immune system and unlock protective mechanisms, BEFORE applying other boosters. It is especially important during Fall-Winter for improving cold tolerance and disease resistance.

5) Always apply foliar spray and/or drench the soil with solutions in morning hours so the plant has time to process the nutrients during daylight when metabolism is the most active.

6) Avoid any dry fertilizers during winter