Growing radishes and lettuce inside during winter in WA

Zone Seattle WA 98119 | Cabob94 added on January 4, 2018 | Answered

What kind of drainage material should I use in the planter under the potting soil?

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Certified GKH Gardening Expert
Answered on January 5, 2018

I have two personal preferences- My first being what is called growstone. This is a fluffed recycled silica glass material, and is one of the best options.

My second preference is expanded clay pellets. These are a very good dranage material as well.

Perlite would also work just fine as well. as would gravel that was WELL washed off.

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