If you are using larger planter boxes, what material and size did you choose? I have a basically rectangular balcony and would like to put a planter box across each of the short ends, perhaps wooden or even concrete. Any wisdom from experience out there?
Line it with ground cover fabric and you don’t have to care about material, rot or anything ;)
I built a wood planter on legs with no bottom, attached ground cover fabric in a sling/U-shape that hung a bit away from the wood in all sides.
A dm of LECA, then soil and compost as per usual. LECA makes for nice drainage and water reservoir.
Keeping the soil away from the wood made it so I’ve had no rot or degradation at all for 6 years as air comes in around to dry it all out.
Sizewise I covered the whole short end, and made it deep enough to fit the door and other furniture, about 40x60x195 cm.
Thanks so much for that advice