🌱 Orchid Nerd Sponge Rock – 2 Cubic Foot Box

(Horticultural-Grade Super Coarse Perlite)

Need more mix for a larger growing operation or an extensive repotting project? The Orchid Nerd Sponge Rock 2 Cubic Foot Box gives you all the premium, horticultural-grade perlite you love—just in a larger, more economical size.

Specially selected for orchid growers, tropical collectors, and serious hobbyists, our super coarse Sponge Rock improves root health by boosting airflow and drainage while retaining just enough moisture to fuel strong growth.

Our Sponge Rock is clean, sterile, pH neutral, non-flammable, odorless, non-toxic, and resistant to decay, shrinkage, pests, and fungi. It is OMRI Listed for organic growing and delivers consistent, reliable performance.

🌿 Key Features:

• Super Coarse Particle Size: Primarily 4–16 mesh (approximately 1–5 mm)
• Lightweight and porous – holds moisture without waterlogging
• Clean, sterile, chemically inert, and sustainable
• pH Range: 6.5–7.5
• Moisture Content: Less than 0.5%
• OMRI Listed for organic growing
• Suitable for orchids, tropicals, succulents, hydroponics, and more

✅ Why Growers Choose Orchid Nerd Sponge Rock:

• Enhances drainage and airflow for healthier root systems
• Helps prevent root rot and compacted soil
• Adds structure and longevity to custom orchid and tropical plant mixes
• Trusted by hobbyists, collectors, and professional growers alike

📦 Available Size:

• 2 Cubic Foot Box

Also available in a 1 Cubic Foot Box for smaller projects.

🔗 Recommended Pairings:

• Orchid Nerd All-Purpose Orchid Potting Mix – blend with Sponge Rock for custom drainage
• Orchid Nerd Green Balls – ideal for staking, training, and supporting orchid spikes, with a green color that blends naturally into foliage
• Orchid Nerd Potting Stick – durable hard plastic orchid potting sticks are designed for tamping down potting media firmly and evenly around your plants.

💡 Tips for Best Results:

Mix Orchid Nerd Sponge Rock into bark-based orchid media or potting blends to improve drainage and aeration. For species that demand fast drying roots, Sponge Rock can even be used alone. Always re-pot orchids after blooming to minimize plant stress.