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Quantity
1
Description
Your Bio Planting Block will last a lifetime with these handy, economical Bio Sponges. When you're ready to begin a new crop in the Planting Block, first be sure that the block has been thoroughly disinfected (warm water with a splash of bl...
Reviews
5.0
12 ratings
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These sponges, along with Park's Bio-Dome, are ideal for germinating seeds. I planted a variety of clover there, and I saw germination starting overnight. Of course, most seeds need more time and care before they germinate, but Park's system provides the right combination of air and moisture for the seeds, and for their growth into strong seedlings for planting.
Wendy Lou · April 17, 2026
Nicely packaged, moist, and fit perfectly in my Aerogarden Starter Tray. Will buy again.
