Optic Foliar Switch, Transport, ATAK & Overgrow – The Ultimate Guide to Elite Foliar Feeding
By Holland Horticulture • Published Nov 18, 2025
Optic Foliar nutrients are some of the most trusted names in modern horticulture. For growers seeking faster results, stronger plant development, and improved nutrient uptake, Optic Foliar Switch, Optic Foliar Transport, Optic Foliar ATAK, and Optic Foliar Overgrow are considered the gold standard in advanced foliar feeding.
This guide breaks down each product, how they work, and why Optic Foliar takes foliar feeding to the next level—featuring high-efficiency leaf absorption, light-safe spraying, and rapid systemic uptake.
Why Optic Foliar Leads the Way in Modern Foliar Nutrition
Traditional foliar sprays often sit on the leaf surface, evaporate, or burn under strong grow lights. Optic Foliar products overcome these issues with:
- Enhanced foliar absorption technology
- Mesophyll-layer nutrient penetration
- Light-on application — safe to spray with lights on
- Zero leaf burn and zero residue
- Faster nutrient delivery and immediate plant response
Growers use Optic Foliar for healthier plants, stronger growth, bigger yields, and maximum nutrient efficiency. Each product is designed to improve every phase of the growth cycle with premium foliar nutrients and plant-health technology.
Optic Foliar SWITCH – Support for Flower Initiation & Early Bloom
Switch is a pre-flowering foliar spray supporting smooth transition from vegetative growth to bloom. It ensures consistent flower sites and stable early-flower structure.
- Helps trigger consistent flower initiation
- Supports uniform bud formation
- Reduces transitional stress
- Enhances early bloom health and structure
- Encourages tight node spacing before flower set
Switch is safe to use with lights on, providing instant uptake while avoiding risks common with standard sprays. Ideal for growers seeking reliable flowering performance.
Optic Foliar TRANSPORT – The Absorption Booster That Changes Everything
Transport is Optic Foliar’s flagship technology, transforming nutrient entry into the leaf:
- Dramatically increases nutrient uptake
- Opens the leaf cuticle for deep penetration
- Allows spraying with lights on
- Eliminates need to spray under leaves
- Stops runoff and leaf residue
- Compatible with any foliar spray, enhancing effectiveness
Transport drives faster nutrient uptake, making foliar feeding cleaner, more efficient, and significantly more powerful.
Optic Foliar ATAK – Advanced Plant Immunity & Pathogen Defence
ATAK supports plant resilience and long-term health with:
- Boosts natural plant defence systems
- Strengthens internal plant tissues
- Helps recovery under stress
- Promotes strong cell development
- Supports overall plant vitality
Using Transport technology, ATAK penetrates deeply, delivering targeted support exactly where it’s needed, ideal for maintaining plant health in challenging environments.
Optic Foliar OVERGROW – The All-in-One Foliar Feeding Powerhouse
Overgrow is a complete, ready-to-use foliar spray with premium nutrients, plant-health boosters, and built-in Transport technology:
- Immediate greening and improved chlorophyll production
- Rapid growth and stronger foliage
- Contains nitrogen, micronutrients, and trace elements
- Improves stress resistance
- Promotes healthier, thicker, more vibrant leaves
- Supports against common pest pressures
- Complete foliar feed solution in one spray
Overgrow feeds, strengthens, protects, and boosts plant vitality—ideal for hobby and professional growers alike.
Why Optic Foliar Takes Foliar Feeding to a New Level
Optic Foliar isn’t just a spray — it’s an advanced nutrient delivery system:
- Light-safe application: spray with lights on, no burning.
- Deep mesophyll penetration: nutrients reach active leaf layers.
- Maximum nutrient efficiency: almost zero waste.
- Faster visible results: greener leaves, stronger stems, improved growth.
- Targeted support for every growth stage: Switch for flower initiation, Transport for absorption, ATAK for immunity, Overgrow for full-spectrum feeding.
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Frequently Asked Questions
- How do I use Optic Foliar Switch?
- Apply Switch as a pre-flowering foliar spray to support flower initiation. Spray with lights on for rapid absorption and early bloom support.
- Can Transport be used with other sprays?
- Yes — Transport enhances uptake for any foliar nutrient, booster, or plant health spray, maximising efficiency and penetration.
- Does ATAK improve plant immunity?
- Absolutely. ATAK strengthens tissues, boosts natural defences, and supports recovery from stress, helping plants stay healthy throughout their growth cycle.
- Is Overgrow a complete foliar feed?
- Yes — Overgrow combines all essential nutrients, plant boosters, and Transport technology in one spray, providing full-spectrum foliar nutrition.