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Keep your orchids healthy and blooming naturally with Marphyl Marine Phytoplankton — a gentle, nutrient-rich soil enhancer made from ocean phytoplankton.
Orchids are among the most captivating plants in the world — elegant, delicate, and rewarding when cared for properly. But keeping them healthy and vibrant isn’t always easy. Orchids are known for being sensitive to their environment and nutrients, and even small imbalances can affect their ability to bloom.
That’s where nature offers an unexpected ally: marine phytoplankton. At MARPHYL, we’ve harnessed the power of these microscopic ocean plants to create a natural soil enhancer that nourishes orchids from the roots up — sustainably and effectively.
Unlike most houseplants, orchids don’t grow in traditional soil. In nature, they often live attached to trees or rocks, absorbing moisture and nutrients from the air, rain, and decomposing organic matter around them. This makes them incredibly sensitive to the quality of their growing medium and water.
Synthetic fertilizers can overwhelm orchids with concentrated salts and chemicals, which may cause root burn or disrupt the delicate microbial balance around the plant. A gentle, organic source of nutrients — like MARPHYL Marine Phytoplankton Soil Enhancer — provides what orchids need without the risk of overfeeding.
Phytoplankton are microscopic plants that float near the surface of the ocean. They form the foundation of the marine food chain and are responsible for producing over half of the Earth’s oxygen. Beyond their environmental role, they’re also incredibly rich in nutrients — containing many types of minerals, vitamins, amino acids, fatty acids, and antioxidants.
When applied to plants, these compounds nourish both the roots and the beneficial microorganisms that keep the growing environment healthy.

Using MARPHYL Marine Phytoplankton Soil Enhancer gives orchids a complete spectrum of nutrients in a natural, gentle form. Here’s how it helps your orchids thrive:
Healthy roots are the foundation of any thriving orchid. The trace minerals and amino acids in phytoplankton feed the root system, promoting robust development and greater resistance to stress and disease.
Phytoplankton provide balanced nutrition that fuels flowering cycles. Orchids treated regularly often produce brighter, longer-lasting blooms thanks to improved cellular function and energy production.
By stimulating beneficial microorganisms in the potting medium, phytoplankton help orchids absorb water and nutrients more efficiently. This is especially valuable for epiphytic orchids, which depend on airflow and hydration balance.
Antioxidants and trace minerals support the plant’s natural defenses, helping orchids resist fungal infections and environmental stress.
Unlike synthetic fertilizers, phytoplankton doesn’t leave behind harmful salt residues that can damage roots or alter pH levels. It keeps the growing environment naturally balanced and clean.
Phytoplankton is simple to use and highly effective for both potted and mounted orchids.
For watering:
Mix 50 ml of Marphyl Marine Phytoplankton Soil Enhancer per 1 liter of water.
Water your orchids as usual, allowing the solution to soak through the medium and drain fully.
Use once every two weeks during the growing season, and once a month during dormancy.
For misting (optional):
Dilute 20-30 ml per liter of water and lightly mist leaves and aerial roots.
Avoid misting open blooms.
For hydroponic or semi-hydro orchids:
Add 30–50 ml per liter of water and refresh the solution every two weeks.
MARPHYL Marine Phytoplankton Soil Enhancer is made from sustainably harvested phytoplankton grown in controlled conditions that replicate natural spring ocean blooms. No synthetic chemicals, additives, or preservatives — just pure ocean-derived nutrition.
By choosing phytoplankton, you’re not only nurturing your orchids — you’re supporting a more sustainable approach to gardening that respects the planet’s ecosystems.
Growers who use MARPHYL often report noticeable improvements in root health, leaf color, and blooming frequency. The difference lies in the product’s gentle, whole-food approach: instead of pushing fast growth, it nourishes the plant in harmony with nature’s pace.
Whether you’re caring for Phalaenopsis, Cattleya, Dendrobium, or Oncidium orchids, regular use of marine phytoplankton can help them flourish with stronger roots, fuller leaves, and more spectacular flowers.
Orchids may have a reputation for being fussy, but with the right nutrition, they can be remarkably resilient. Marine phytoplankton delivers a perfectly balanced boost that supports every stage of growth — from root development to blooming and beyond.
Give your orchids the nourishment they deserve with MARPHYL Marine Phytoplankton Soil Enhancer — a gentle, sustainable, ocean-sourced solution that helps your plants grow healthier and bloom beautifully, year after year.