@Grow4Releaf, thanks for the question. This particular foliar spray Thrive YahWhey is an organic ferment made from kefir. It is readily absorbed both through root watering and foliar spray. I like to give them something that they don't always have to work for. Sort of a snack, if you will. I give it at lights out, just so the plants can absorb it when they are winding down for the day, and not fighting the light.
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