Sounds like the sunflowers will have many blooms in one plant. that'd be awesome - since the Manmoth sunflowers only bloom once - but really really big.
we've also started lettuce pods, and why the heck not - cilantro. Hoping that the lettuce and cilantro will grow and thrive in just the pods. then the idea of growing plants in a rain gutter system might just work.
if they get too big (root system) then jiffy does sell a larger pod size. just not sure if water placed in the gutter will soak up to the roots. gardening - it's a steep learning curve every year with trial and error.
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