Have You Used 100% Coir in Covered Sub-Irrigated Planters (SIPs)?

If you've tried using 100% coir as growing medium for SIPs, we're eager to hear about your experience.

A compressed block of coir: fiber from coconut shells

Both Bruce and I have used some coir, along with a larger quantity of peat and a little perlite, in previous years, but haven't yet tried all-coir as planting mix.

Coir seems to retain more moisture, and in a covered SIP like the ones we use, we're concerned about soggy growing medium.

Covered SIP

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