its been my experience that they grow faster and bigger in the gravel. we are doing some trials this seed set, i will document it and report the findings asap.
...dont get me wrong, if i had to choose, i would plant lettuce on the rafts, simply because its about all i like to grow on a raft.
...basil in gravel, without question. the type i like to grow get soo huge, they fall over in the rafts. now this really is all about your harvest style. if you cut multiple times like i do, you need the root support. if you are harvesting whole plants, then crank em out on the rafts before they ever get real big.
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