Hawaiian cinder mixes for foliage plant production are composed of varying ratios of natural occurring volcanic cinder and sphagnum or coir peat. The cinder used for certified potting mixes are steam treated at 160o Fahrenheit for 30 minutes to kill all nematodes and pathogens.

This produces a superior potting mix, which has attributes of:

  1. Water holding - peat & cinder
  2. Cation exchange - low cinder, higher for peat
  3. Porosity - high cinder moderate coarse peat
  4. Shrinkage - cinder doesn't break down; long lasting type of peat.
  5. Longevity - cinder never long lasting type of peat.
  6. Sterility – cinder is heat treated for a clean potting mix.

Two of the most important attributes are longevity and porosity. Many other soil mixes use wood chips and/or wood by-products to create aeration. As time passes, these materials degrade and create loss of porosity and thus drainage, which eventually causes plant mortality. Since porosity does not dissipate in a cinder mix, there is adequate O2 in the soil mix, which eliminates many of the pathogens that cause root rots.

Another attribute of the cinder mix is that water is drawn up by capillary action, which makes them compatible with sub irrigation practices. Since there is little, if any, decomposition of organic materials, there is a much lesser change of bothersome soil insects.

Watch our videos

Recent News & Events

  • Celebration 18 Floral Design Workshop Registration Package

    October 2, 2018
      2018 Celebrations Workshop & Class Invitation 2018 Celebrations Registration Form 2018 Waiver - County floral 2018 Waiver - FOLG floral Media Release Form for Celebration 18 Read More
  • Disaster Emergency Resources 6/15/2018 Meeting

    June 22, 2018
    61518 Disaster Emergency Resource Meeting Final Schedule USDA Farm Service Agency Emergency Assist. for Livestock, Honeybees & Farm Raised Fish​ FSA emergency_conservation_program_oct2017 FSA livestock_indemnity_program_fact_sheet-may_2018  American Job Center meetings flyer County R&D Enterprise Zone brochure County R&D Enterprise Zone Program UH-Manoa Read More
  • 2018 MIDPAC Horticultural Conference & Expo

    May 10, 2018
    Register for MIDPAC at HENA.ORG! About MIDPAC The Aloha Advantage Experience firsthand the Aloha Advantage of Premium Hawaiian Grown Foliage & Flowers and see why nothing competes with Hawaiian Grown. Plus, MIDPAC is the perfect opportunity to meet and build Read More
  • 1