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So, I dropped one of these in each tray and I’ll drop a bit of fertilizer in each tray, too, before I water again–probably tomorrow. We’re expecting 88 degrees tomorrow, 91 on Friday and 93 on Saturday! So, it will be a good time to test the system!
Fertilizer for the potted plants
My first thought regarding fertilizing my potted plants now in trays on the drip system was to drop some granular fertilizer in the trays. But then I found these in the greenhouse: