Wow! Those are fabulous!!!I used to do two but they were on the front porch railing. See if can remember what used in them....
Burgundy petunias (trailing)
Lemon colored dwarf marigolds
Light blue lobelia (non trailing)
Variegated Nepeta (trailing)
White, purple and pink Impatiens
I'm sure there was one or two more things I stuffed in, yes stuffed in, only had to last the season. I also added time release fertilizer to the planting mix.
One summer I did two huge hanging moss baskets, just to say "done that" over 120 plants in each one, it took two of us to lift them up on their very sturdy hooks, they were similar to these Victoria B.C. hanging baskets but bigger.
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It was fun while it lasted but can't do all I used to anymore, but the memories are still there.