Tower gardens are popular but are so expensive. How could I make one?
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There are lots of DIY tower gardening on YouTube... https://www.youtube.com/results?search_query=tower+garden+diy
https://www.pinterest.com/explore/tower-garden/?lp=true
Fill a large pot with soil, stack a smaller pot in the center, repeat... then plant in the rim of soil around each pot.
I have one of those bought ones (actually it was a buy one get one free). Tossed it out. Never waters properly and lots of dying occurred. Thought it might be my fault for not watering properly, so I gave it a second go. So year 2 proved it was not working.
I suggest (from my experience) you make sure each level can be accessed for watering. Do not believe those top watering systems - they lie!