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

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 - with fertilizer (left) and without (right)

Chaa-plu Plant Facts

Botanical name: Piper sarmentosum
Also known as: Chaa-plu, Vietnamese Pepper, Lalot, La Lot, Wild Betel Leaf

USDA Zone: 9 - 11

Highligths

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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.

🌿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.

🛒 Feed your plants

Macadamia Tree Care

By Tatiana Anderson, Horticulture Expert at Top Tropicals with Smokey & Sunshine help

🌳 Growing Macadamia Tree

Macadamia is not a fragile tree, but it does have preferences. If you respect them from the beginning, the tree rewards you for decades.

• Start with the site. Drainage is everything. Macadamia will tolerate cool weather better if planted in a well-drained area. Avoid low spots where water sits after rain. If your soil is dense or clay-like, build a mound or improve drainage before planting.
• Choose full sun whenever possible for the best nut production.
• Planting location matters. A south or southeast exposure near a wall can create a warmer microclimate that buffers cold nights. Freeze plus wind is more damaging than temperature alone. Macadamia handles cold better when protected from winter wind.
• Dig a hole about twice as wide as the container, but no deeper than the root ball. Set the tree level with the surrounding soil. Do not bury the trunk.
• Water regularly during the first three months while the tree establishes roots.
• Fertilize lightly. Macadamia does not respond well to over-fertilizing. Macadamias prefer mild liquid fertilizers, SUNSHINE Boosters Robusta is ideal for it. You may also use controlled release Green Magic every 6 months, it is especially formulated for hot climate. To keep leaves healthy deep green without yellowing, micro elements must be applied on regular basis, we recommend to always have handy Sunshine Superfood micro nutrients complex.
• Young trees should be protected if temperatures drop below freezing. Once established, they become far more resilient.
• Harvest timing: Nuts mature 6-7 months after flowering. Husk splits naturally when ready. Fallen nuts should be collected quickly.
• Flower and Nut Drop: Many gardeners panic when they see flowers or small nuts drop, but Macadamia naturally sheds excess fruit. It does not mean failure; the tree simply keeps what it can afford to feed.
• Macadamia is relatively low-maintenance, but watch for squirrels and rats. They love the rich nuts as much as humans do, so be sure to collect fallen nuts quickly.
• Root Sensitivity: Macadamia roots dislike disturbance. Transplant carefully. Avoid root damage.
• Macadamia is not a fast-return crop. It begins producing a few years and increases gradually. But once mature, it becomes a steady, reliable part of your garden.

Learn more: Macadamia - Hard Sweet Nut and Hardy Tree

🌱 Growing Macadamia in a Pot

• Container size: Start large. A 15-25 gallon pot is ideal for long-term growth.
• Drainage: Critical. Use a container with multiple drainage holes.
• Soil mix: Use a high-quality, well-draining container mix. Avoid heavy garden soil. Top Tropicals Abundance soil-less mix is specially formulated for pot growing
• Light: Full sun is best. Strong light improves flowering and nut production.
• Watering: Water deeply, then allow the top layer to dry slightly before watering again. Avoid constant saturation.
• Feed lightly and consistenly. SUNSHINE Boosters Robusta liquid fertilizer is safe to use with with every watering. During hot season you may add controlled release Green Magic every 6 months. It is essential to apply micro elements on Macadamias: Sunshine Superfood micro nutrients complex.
• Cold protection: If temperatures drop below freezing, move the container to a protected area such as a garage or greenhouse.
• Pruning: Prune lightly to control size and maintain airflow within the canopy.
• Expectations: Container trees may produce fewer nuts than in-ground trees, but they offer mobility and climate control.
• Smokey says: Container trees offer mobility and climate control so you never have to worry about a freeze!

✍️ More About Macadamia from Garden Blog

🚫 Common Mistakes When Growing Macadamia

• Planting in poorly drained soil:
  The most common mistake. Macadamia will decline quickly in heavy, waterlogged ground. If drainage is questionable, plant on a mound.
• Overwatering young trees:
  Newly planted trees need consistent moisture, not constant saturation. Wet roots lead to root problems.
• Over-fertilizing:
  Too much fertilizer causes weak growth and nutrient imbalance. Feed lightly and avoid heavy nitrogen applications.
• Planting too deep:
  The top of the root ball should sit level with or slightly above the surrounding soil. Do not bury the trunk.
• Ignoring micronutrients:
  Macadamia is very prone to iron, zinc, and copper deficiencies. Yellowing leaves may signal a micronutrient issue. Applly Sunshine Superfood on regular basis.
• Expecting instant production:
  Macadamia takes time. Early years build structure. Patience is part of success.
• Skipping cold protection for young trees:
  Established trees are tougher, but young plants should be protected below freezing.

❓Frequently Asked Questions (FAQ)

• Is Macadamia toxic to pets? While the nuts are a superfood for humans, they are toxic to dogs. If you have a dog that tends to forage in the garden, ensure you harvest fallen nuts promptly or fence the base of the tree during the drop season.
• Which varieties are best for the "Survivor" garden? Look for Macadamia integrifolia (smooth-shell) or hybrids like 'Beaumont' (M. tetraphylla x M. integrifolia). Hybrids often show slightly better cold tolerance and more consistent "home garden" production.
• How tall will my tree get? In the ground, an unpruned Macadamia can reach 20–30 feet. However, they respond very well to "heading back" (pruning the top) to keep them at a manageable 12–15 feet for easy harvesting.
• Do I need two trees for cross-pollination? Macadamias are self-fertile, meaning one tree will produce nuts. However, planting two varieties near each other often results in a significantly heavier "nut set" due to cross-pollination.
• Why are the leaves on my Macadamia prickly? Don't panic—this is normal! Some species, particularly M. tetraphylla, have serrated, holly-like leaves. This actually makes them a great "defensive" hedge against intruders or deer.
• When exactly should I harvest? The tree tells you when it's ready. Don't shake the tree; wait for the nuts to fall naturally. In Florida, this usually happens between August and November. If the green outer husk hasn't split yet, let them sit in a shaded, dry spot until they do.
• My tree has "clusters" of flowers but no nuts. What happened? Macadamias produce long racemes (flower spikes) with hundreds of tiny blooms. It is normal for 90% of these to fall off. The tree only keeps what it can afford to "feed." Boost your success by using a combination of Sunshine C-Cibus liquid fertilizer and SUNSHINE Superfood micro element supplement during the flowering stage to help the tree retain more fruit.
• Can I grow them from a nut I bought at the store? Unlikely. Commercial nuts are usually roasted or dried at high heat, killing the embryo. Even if a raw nut sprouts, it may take 10–12 years to fruit and the quality is a gamble. Buying a grafted tree saves you a decade of waiting.

We don’t just sell plants; we test them. The data from this February freeze proves that with the right selection and proper drainage, 'tropical' doesn’t have to mean 'fragile.' Don’t wait for the next cold front to find out what in your garden is vulnerable. It is time to replace those empty spots with proven survivors that offer both beauty and a premium harvest. If it can stand up to 25F in our fields, it’s ready for your backyard.

Coming in Part 2...

Smokey is already crunching the numbers on our next survivor, and Sunshine found another tree that stayed perfectly green in the wind. Stay tuned to see which fruit tree made the cut!

🎥 More Macadamia videos from our channel

🛒 Add Macadamia Tree to your garden

🌿 The Vanilla Plant That Outgrew Its 100-Gallon Container.

Smokey: Is that really the entire mother plant?
Sunshine: Most of it.
Smokey: What do you mean "most of it"? And why are there donuts hanging from the plant?
Sunshine: We still haven't found the other end. The donuts attract pollinators.
Smokey: Donuts do not attract pollinators.
Sunshine: Then explain why I keep visiting the plant.
Smokey: You work here.
Sunshine: That's what the plant wants you to think. It's called "Intelligent Design" for a reason.

The plant Sunshine is perched on is not a hedge. It is not a wall. It is a single specimen of Vanilla dilloniana, Dillon's Vanilla, and it has a name: Intelligent Design. Unlike the familiar Vanilla planifolia — the commercial vanilla of ice cream and extract — dilloniana produces no leaves. The plant is essentially a green vine, photosynthesizing entirely through its stems. It is an unusual and striking grower, and in good conditions it can develop into an impressive, multi-branched specimen. It is classified as rare, and is considered vulnerable or endangered across portions of its native range.

Intelligent Design was grown and lovingly tended for years by Robert Riefer, a grower who is both a good friend of Top Tropicals and one of the most dedicated orchid collectors we know. The mother plant of this specimen traces its origins back to 1927 - nearly a century of continuous cultivation.

In 2011, the American Orchid Society recognized this remarkable plant with a Certificate of Horticultural Merit (CHM), one of the society's formal awards for plants of exceptional quality.

By 2017, the plant had already become well known in the orchid and tropical plant community, appearing in a video that documented Robert moving it into a 100-gallon container. That video became something of a legend among collectors.

🎥 Video: the biggest Vanilla Orchid in the world moving to 100 gal pot

Then the plant kept growing.

It outgrew the 100-gallon container. Robert eventually moved it into a 250-gallon pool on wheels - because when a plant refuses to stop, you give it room.

The plant is currently on display at Edison Ford Winter Estates museum and botanical garden in Ft Myers, Florida, during the month of June, where recent photographs show it larger and more floriferous than ever. It is, as best anyone can determine, the largest known cultivated specimen of Vanilla dilloniana in the world. If you are local or visiting Florida, don't miss the chance to see this world-famous orchid in person. It is expected to continue blooming through June.

And here's the remarkable part: the Vanilla dilloniana plants available from Top Tropicals are propagated directly from this exact plant - Intelligent Design itself.

🛒 Add Intelligent Design Vanilla to your collection

👉 A Piece of Living History - Direct from the Source

Vanilla dilloniana is a rare species, considered vulnerable to endangered across parts of its native Caribbean range. Plants with documented provenance - especially provenance tied to a named, award-winning, century-old specimen - are genuinely uncommon in cultivation.

What you would be growing is a direct descendant of the famous Intelligent Design mother plant, carrying the same historic lineage recognized by the American Orchid Society.

For collectors, opportunities to acquire plants with this kind of documented history are exceptionally rare.

🛒 Start your own Vanilla Godzilla

Growing Leafless Vanilla

• Light: Bright filtered light is ideal. Morning sun is generally well tolerated. Avoid intense afternoon sun, especially during summer.
  Ideal: Dappled shade, eastern exposure, greenhouse conditions, or 30-50% shade cloth.
• Temperature: Warm-growing tropical species.
  Best: 70-95F
  Protect below: 40F
  Not frost tolerant.
• Cold Protection: In USDA Zones below 10, grow in a container and move indoors or to a protected greenhouse before temperatures drop below 40F.
• Humidity: Prefers moderate to high humidity with good air circulation. Avoid cold, stagnant, damp conditions.
• Watering: Water thoroughly, then allow the potting mix to partially dry before watering again. Do not keep constantly wet. In cool weather and winter, keep the soil on the drier side. Overwatering when temperatures are low is the most common mistake.
• Potting Mix: Plant in a very fast-draining medium.
  Recommended: Top Tropicals Abundance Mix.
  The open structure allows excellent root aeration while retaining enough moisture for healthy growth.
• Support & Growth Habit: Unlike most vanilla orchids that are trained vertically on posts or trellises, Vanilla dilloniana can be grown using the "Intelligent Design" method. Start with a sturdy support while the plant is young, then allow the stems to wrap around themselves in wide circles. As new growth emerges, continue guiding the vines around the container. Over time, the plant forms an impressive sculptural mound of intertwined stems.
• Container Growing: Excellent for wide containers. The larger the mass of stems becomes, the more impressive the display and the greater the flowering potential. Unlike traditional vanilla culture, extensive vertical space is not required.
• Repotting: Move to progressively larger containers as needed. Rather than growing upward indefinitely, the plant can continue expanding into a larger circular mass, making it well suited for long-term container culture.
• Fertilizing: Feed lightly but consistently during active growth.
  Recommended: Sunshine Booster™ Orchidasm.
  Apply according to label directions every 2-4 weeks during warm growing weather. Reduce feeding during cool periods or when growth slows. Read our Guide to Sunshine Boosters™
• Growth Rate: Moderate to fast under warm conditions. Established plants can branch freely and become surprisingly large over time.
• The Flowers: Pale green to yellow-green flowers with a deeply fluted reddish-purple lip and yellow crest. Mature plants in bloom are highly prized by orchid collectors.
• Collector Appeal: Unusual leafless growth habit. Historic provenance. Highly desirable among orchid collectors.

Why Is It Called "Intelligent Design"?

The famous mother plant was named Intelligent Design by its grower, Robert Riefer. After decades of growth, countless blooms, container upgrades, and an apparent determination to occupy every available square foot of greenhouse space, the name seemed increasingly appropriate.

Unlike commercial vanilla, Vanilla dilloniana is grown primarily as a collector's orchid. Its leafless, sculptural stems create a living tangle of green architecture unlike almost any other cultivated vanilla species.

Ready to grow this remarkable Vanilla dilloniana? Start your own chapter in the story of Intelligent Design.

📚 Learn more from our Blog

🛒 Order Legendary Leafless Vanilla Dilloniana

Smokey: We cannot guarantee that your plant will eventually require a 250-gallon pool on wheels.
Sunshine: We also cannot rule it out.
Smokey: Officially, we cannot confirm that the plant possesses intelligence.
Sunshine: The evidence is mounting.
Smokey: What evidence?
Sunshine: It convinced humans to build larger containers, move it into a 250-gallon pool on wheels, transport it to museum exhibitions, and place its agents in collections across the country.
Smokey: That's called excellent horticulture.
Sunshine: That's exactly what the Intelligent Design plant wants you to think.

Prepare your plants for Winter with Sunshine Boosters

We usually stop using dry slow-release fertilizers from November to March. However, liquid Sunshine Boosters, which are natural plant food, can be used all year. They help your plants survive winter. When it gets colder, we water less, so the fertilizer decreases too. The plants only use what they need. To learn more about how Sunshine Boosters work and why they're safe and helpful, check out this blog: Using Sunshine Booster during Winter.

Apart from giving your plants nutrients during winter, you also can improve their ability to handle the cold. Try the Sunshine Boosters supplement kit for tropical plants. Follow the schedule and use three different supplements: SUNSHINE Superfood, SUNSHINE Epi, and SUNSHINE-Power-Si. Read more about treatment with Sunshine boosters supplement kit.