Balcony update: Pottery Planter rack

So the pottery planter rack setup is coming along nicely, I have setup 4 terracotta pots on it, and sowed some herb and flower seeds. It is completely the wrong season for sowing the seeds, but so far the weather has been inclement and I think they may survive the frost and cold being that they are off the ground and on a balcony.

I chose to sow 4 sets of seeds, Coriander, Nasturtiums, Chives and Mint. It is probably the worst season and time other than winter to sow them but oh well. It being autumn here.

17CM Terracotta pots with seeds sown (from left to right): Coriander, Nasturtiums, Chives, Mint.
Terracotta 17CM pots on the planter rack, watered with 2.5cups of water each seemed to wet the soil and not overspill the saucer while filling it quite well.

For now I am using a spare cactus and succulents potting mix bag as a weight on the bottom of the planter rack, I am really worried about strong wind knocking the planter rack around and maybe spilling the pots. I think in the future I will wire around the rack a little balcony thing to hold the pots in in case of wind.