Take a clear 2‑liter bottle, cut it in half, and you’ve got a self‑watering planter—thin walls feel cool against your palm, and the shape is just right for a single herb pot.
Thread a cotton wick through the cap, fill the lower half with loamy soil, and plant basil or mint. The wick drips moisture up only when the soil dries, so your herbs stay happy without over‑watering.
And if you’re into tomatoes or chillies, poke a few tiny holes in the cap of a filled bottle, flip it, and let the soil soak slowly for days. For succulents, hang a stack of bottles on a railing and watch the glass walls become a living green wall.
But don’t forget the weight factor—place a capped, empty bottle at the base of a larger planter to lighten the load and improve drainage. It’s a simple trick that keeps your balcony safe from over‑weighting.
Grab a cheap polypropylene bottle from a grocery store or recycle bin, cut, fill, tie a cotton string, and plant. Check the local market for a small 2‑liter bottle; a quick DIY bottle planter can be up and running in 15 minutes, and your balcony will thank you with fresh herbs tomorrow.