Pvc Vertical Tower Help Please

Question

in regards to the info i found on your website (copied below)I would really appreciate your help —– i have 3m lengths x 12 pvc piping and i want to builld a frame(like a greenhouse style) but in the frame (drill holes in the pvc piping like in hydroponics) and plant some herbs and greens (shallow rooted veg) – my question is – do i plant directly in the hole into some soil or put small pots in the holes and just plant in the pots!?!? please help – i dont know whats best, safest and all i can find on the net is about hydroponics and also how unsafe pvc piping is to grow in! thanks “PVC Pipe Garden Ideas The sky is the limit in your DIY PVC pipe garden. There are endless creative ways to give these pipes new life in the garden, but here are some ideas for projects to get your mind working: Simple, elevated planters. Use short, leftover pieces of pipe as planters. Sink the pipe into the ground until it is at the desired height, add soil, and plant flowers. Create different heights in beds for visual interest. Vertical towers for small space. Longer pieces of tube can be used on patios or in other small spaces to create a vertical garden. Cut holes in the sides and fill the tube with soil. Plant flowers, vegetables, or herbs in the holes.”

Answer 1

I wouldn't use soil. I would use a soilless media, such as coco coir, rockwool, hydroton, or other materials.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soilless-growing-mediums.htm

https://www.gardeningknowhow.com/special/containers/different-hydroponic-systems.htm

https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/growing-in-rockwool-cubes.htm

As far as the safety of PVC goes.. It is relatively stable. In fact, your pipes in your home are probably made of PVC!