Perlite vs. Vermiculite

Perlite or Vermiculite? How do you choose which one to use?

For Drainage and Aeration: Choose perlite
For Water Retention: Choose vermiculite

In this video, Laura from Garden Answer breaks down when to use which.

Perlite

  • Great for or Seed Starting or blending a custom potting mix
  • Helps loosen heavy soils and prevents compaction
  • White granular particles contain about 6% water
  • Neutral pH
  • Holds nutrients and 3-4 times it’s weight in water
  • Clean, odorless, sterile and non-toxic
  • Will not rot or mold
  • Lightweight substitute for sand
  • Can float to the top of potted plants due to its light weight

Vermiculite

  • Great for or Seed Starting or blending a custom potting mix
  • Helps loosen heavy soils and prevents compaction
  • Retains moisture and plant nutrients
  • Mixes well with soil
  • Clean, sterile, odorless, non-toxic
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