🌞 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

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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

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.